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About ImageMagick
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GetImageFromMagickWand() returns the current image from the magick wand. The format of the GetImageFromMagickWand method is: Image *GetImageFromMagickWand(const MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickAdaptiveBlurImage() adaptively blurs the image by blurring less intensely near image edges and more intensely far from edges. We blur the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and MagickAdaptiveBlurImage() selects a suitable radius for you. The format of the MagickAdaptiveBlurImage method is:
MagickBooleanType MagickAdaptiveBlurImage(MagickWand *wand,
const double radius,const double sigma)
MagickBooleanType MagickAdaptiveBlurImageChannel(MagickWand *wand,
const ChannelType channel,const double radius,const double sigma)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). radiusthe radius of the Gaussian, in pixels, not counting the center pixel. sigmathe standard deviation of the Gaussian, in pixels. MagickAdaptiveResizeImage() adaptively resize image with data dependent triangulation. MagickBooleanType MagickAdaptiveResizeImage(MagickWand *wand, const unsigned long columns,const unsigned long rows) A description of each parameter follows: wandthe magick wand. columnsthe number of columns in the scaled image. rowsthe number of rows in the scaled image. MagickAdaptiveSharpenImage() adaptively sharpens the image by sharpening more intensely near image edges and less intensely far from edges. We sharpen the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and MagickAdaptiveSharpenImage() selects a suitable radius for you. The format of the MagickAdaptiveSharpenImage method is:
MagickBooleanType MagickAdaptiveSharpenImage(MagickWand *wand,
const double radius,const double sigma)
MagickBooleanType MagickAdaptiveSharpenImageChannel(MagickWand *wand,
const ChannelType channel,const double radius,const double sigma)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). radiusthe radius of the Gaussian, in pixels, not counting the center pixel. sigmathe standard deviation of the Gaussian, in pixels. MagickAdaptiveThresholdImage() selects an individual threshold for each pixel based on the range of intensity values in its local neighborhood. This allows for thresholding of an image whose global intensity histogram doesn't contain distinctive peaks. The format of the AdaptiveThresholdImage method is:
MagickBooleanType MagickAdaptiveThresholdImage(MagickWand *wand,
const unsigned long width,const unsigned long height,const long offset)
A description of each parameter follows: wandthe magick wand. widththe width of the local neighborhood. heightthe height of the local neighborhood. offsetthe mean offset. MagickAddImage() adds the specified images at the current image location. The format of the MagickAddImage method is:
MagickBooleanType MagickAddImage(MagickWand *wand,
const MagickWand *add_wand)
A description of each parameter follows: wandthe magick wand. add_wandA wand that contains images to add at the current image location. MagickAddNoiseImage() adds random noise to the image. The format of the MagickAddNoiseImage method is:
MagickBooleanType MagickAddNoiseImage(MagickWand *wand,
const NoiseType noise_type)
MagickBooleanType MagickAddNoiseImageChannel(MagickWand *wand,
const ChannelType channel,const NoiseType noise_type)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). noise_typeThe type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson. MagickAffineTransformImage() transforms an image as dictated by the affine matrix of the drawing wand. The format of the MagickAffineTransformImage method is:
MagickBooleanType MagickAffineTransformImage(MagickWand *wand,
const DrawingWand *drawing_wand)
A description of each parameter follows: wandthe magick wand. drawing_wandthe draw wand. MagickAnnotateImage() annotates an image with text. The format of the MagickAnnotateImage method is:
MagickBooleanType MagickAnnotateImage(MagickWand *wand,
const DrawingWand *drawing_wand,const double x,const double y,
const double angle,const char *text)
A description of each parameter follows: wandthe magick wand. drawing_wandthe draw wand. xx ordinate to left of text yy ordinate to text baseline anglerotate text relative to this angle. texttext to draw MagickAnimateImages() animates an image or image sequence. The format of the MagickAnimateImages method is:
MagickBooleanType MagickAnimateImages(MagickWand *wand,
const char *server_name)
A description of each parameter follows: wandthe magick wand. server_namethe X server name. MagickAppendImages() append a set of images. The format of the MagickAppendImages method is:
MagickWand *MagickAppendImages(MagickWand *wand,
const MagickBooleanType stack)
A description of each parameter follows: wandthe magick wand. stackBy default, images are stacked left-to-right. Set stack to MagickTrue to stack them top-to-bottom. MagickAverageImages() average a set of images. The format of the MagickAverageImages method is: MagickWand *MagickAverageImages(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickBlackThresholdImage() is like MagickThresholdImage() but forces all pixels below the threshold into black while leaving all pixels above the threshold unchanged. The format of the MagickBlackThresholdImage method is:
MagickBooleanType MagickBlackThresholdImage(MagickWand *wand,
const PixelWand *threshold)
A description of each parameter follows: wandthe magick wand. thresholdthe pixel wand. MagickBlurImage() blurs an image. We convolve the image with a gaussian operator of the given radius and standard deviation (sigma). For reasonable results, the radius should be larger than sigma. Use a radius of 0 and BlurImage() selects a suitable radius for you. The format of the MagickBlurImage method is:
MagickBooleanType MagickBlurImage(MagickWand *wand,const double radius,
const double sigma)
MagickBooleanType MagickBlurImageChannel(MagickWand *wand,
const ChannelType channel,const double radius,const double sigma)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). radiusthe radius of the , in pixels, not counting the center pixel. sigmathe standard deviation of the , in pixels. MagickBorderImage() surrounds the image with a border of the color defined by the bordercolor pixel wand. The format of the MagickBorderImage method is:
MagickBooleanType MagickBorderImage(MagickWand *wand,
const PixelWand *bordercolor,const unsigned long width,
const unsigned long height)
A description of each parameter follows: wandthe magick wand. bordercolorthe border color pixel wand. widththe border width. heightthe border height. MagickCharcoalImage() simulates a charcoal drawing. The format of the MagickCharcoalImage method is:
MagickBooleanType MagickCharcoalImage(MagickWand *wand,
const double radius,const double sigma)
A description of each parameter follows: wandthe magick wand. radiusthe radius of the Gaussian, in pixels, not counting the center pixel. sigmathe standard deviation of the Gaussian, in pixels. MagickChopImage() removes a region of an image and collapses the image to occupy the removed portion The format of the MagickChopImage method is:
MagickBooleanType MagickChopImage(MagickWand *wand,
const unsigned long width,const unsigned long height,const long x,
const long y)
A description of each parameter follows: wandthe magick wand. widththe region width. heightthe region height. xthe region x offset. ythe region y offset. MagickClipImage() clips along the first path from the 8BIM profile, if present. The format of the MagickClipImage method is: MagickBooleanType MagickClipImage(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickClipImagePath() clips along the named paths from the 8BIM profile, if present. Later operations take effect inside the path. Id may be a number if preceded with #, to work on a numbered path, e.g., "#1" to use the first path. The format of the MagickClipImagePath method is:
MagickBooleanType MagickClipImagePath(MagickWand *wand,
const char *pathname,const MagickBooleanType inside)
A description of each parameter follows: wandthe magick wand. pathnamename of clipping path resource. If name is preceded by #, use clipping path numbered by name. insideif non-zero, later operations take effect inside clipping path. Otherwise later operations take effect outside clipping path. MagickClutImage() replaces colors in the image from a color lookup table. The format of the MagickClutImage method is:
MagickBooleanType MagickClutImage(MagickWand *wand,
const MagickWand *clut_wand)
MagickBooleanType MagickClutImageChannel(MagickWand *wand,
const ChannelType channel,const MagickWand *clut_wand)
A description of each parameter follows: wandthe magick wand. clut_imagethe clut image. MagickCoalesceImages() composites a set of images while respecting any page offsets and disposal methods. GIF, MIFF, and MNG animation sequences typically start with an image background and each subsequent image varies in size and offset. MagickCoalesceImages() returns a new sequence where each image in the sequence is the same size as the first and composited with the next image in the sequence. The format of the MagickCoalesceImages method is: MagickWand *MagickCoalesceImages(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickColorizeImage() blends the fill color with each pixel in the image. The format of the MagickColorizeImage method is:
MagickBooleanType MagickColorizeImage(MagickWand *wand,
const PixelWand *colorize,const PixelWand *opacity)
A description of each parameter follows: wandthe magick wand. colorizethe colorize pixel wand. opacitythe opacity pixel wand. MagickCombineImages() combines one or more images into a single image. The grayscale value of the pixels of each image in the sequence is assigned in order to the specified hannels of the combined image. The typical ordering would be image 1 => Red, 2 => Green, 3 => Blue, etc. The format of the MagickCombineImages method is:
MagickWand *MagickCombineImages(MagickWand *wand,
const ChannelType channel)
A description of each parameter follows: wandthe magick wand. channelthe channel. MagickCommentImage() adds a comment to your image. The format of the MagickCommentImage method is:
MagickBooleanType MagickCommentImage(MagickWand *wand,
const char *comment)
A description of each parameter follows: wandthe magick wand. commentthe image comment. MagickCompareImageChannels() compares one or more image channels of an image to a reconstructed image and returns the difference image. The format of the MagickCompareImageChannels method is:
MagickWand *MagickCompareImageChannels(MagickWand *wand,
const MagickWand *reference,const ChannelType channel,
const MetricType metric,double *distortion)
A description of each parameter follows: wandthe magick wand. referencethe reference wand. channelthe channel. metricthe metric. distortionthe computed distortion between the images. MagickCompareImageLayers() compares each image with the next in a sequence and returns the maximum bounding region of any pixel differences it discovers. The format of the MagickCompareImageLayers method is:
MagickWand *MagickCompareImageLayers(MagickWand *wand,
const ImageLayerMethod method)
A description of each parameter follows: wandthe magick wand. methodthe compare method. MagickCompareImage() compares an image to a reconstructed image and returns the specified difference image. The format of the MagickCompareImages method is:
MagickWand *MagickCompareImages(MagickWand *wand,
const MagickWand *reference,const MetricType metric,
double *distortion)
A description of each parameter follows: wandthe magick wand. referencethe reference wand. metricthe metric. distortionthe computed distortion between the images. MagickCompositeImage() composite one image onto another at the specified offset. The format of the MagickCompositeImage method is:
MagickBooleanType MagickCompositeImage(MagickWand *wand,
const MagickWand *composite_wand,const CompositeOperator compose,
const long x,const long y)
MagickBooleanType MagickCompositeImageChannel(MagickWand *wand,
const ChannelType channel,const MagickWand *composite_wand,
const CompositeOperator compose,const long x,const long y)
A description of each parameter follows: wandthe magick wand. composite_imagethe composite image. composeThis operator affects how the composite is applied to the image. The default is Over. Choose from these operators:
OverCompositeOp InCompositeOp OutCompositeOp
AtopCompositeOp XorCompositeOp PlusCompositeOp
MinusCompositeOp AddCompositeOp SubtractCompositeOp
DifferenceCompositeOp BumpmapCompositeOp CopyCompositeOp
DisplaceCompositeOp
xthe column offset of the composited image. ythe row offset of the composited image. MagickContrastImage() enhances the intensity differences between the lighter and darker elements of the image. Set sharpen to a value other than 0 to increase the image contrast otherwise the contrast is reduced. The format of the MagickContrastImage method is:
MagickBooleanType MagickContrastImage(MagickWand *wand,
const MagickBooleanType sharpen)
A description of each parameter follows: wandthe magick wand. sharpenIncrease or decrease image contrast. MagickContrastStretchImage() enhances the contrast of a color image by adjusting the pixels color to span the entire range of colors available. You can also reduce the influence of a particular channel with a gamma value of 0. The format of the MagickContrastStretchImage method is:
MagickBooleanType MagickContrastStretchImage(MagickWand *wand,
const double black_point,const double white_point)
MagickBooleanType MagickContrastStretchImageChannel(MagickWand *wand,
const ChannelType channel,const double black_point,
const double white_point)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). black_pointthe black point. white_pointthe white point. MagickConvolveImage() applies a custom convolution kernel to the image. The format of the MagickConvolveImage method is:
MagickBooleanType MagickConvolveImage(MagickWand *wand,
const unsigned long order,const double *kernel)
MagickBooleanType MagickConvolveImageChannel(MagickWand *wand,
const ChannelType channel,const unsigned long order,
const double *kernel)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). orderthe number of columns and rows in the filter kernel. kernelAn array of doubles representing the convolution kernel. MagickCropImage() extracts a region of the image. The format of the MagickCropImage method is:
MagickBooleanType MagickCropImage(MagickWand *wand,
const unsigned long width,const unsigned long height,const long x,
const long y)
A description of each parameter follows: wandthe magick wand. widththe region width. heightthe region height. xthe region x-offset. ythe region y-offset. MagickCycleColormapImage() displaces an image's colormap by a given number of positions. If you cycle the colormap a number of times you can produce a psychodelic effect. The format of the MagickCycleColormapImage method is:
MagickBooleanType MagickCycleColormapImage(MagickWand *wand,
const long displace)
A description of each parameter follows: wandthe magick wand. pixel_wandthe pixel wand. MagickConstituteImage() adds an image to the wand comprised of the pixel data you supply. The pixel data must be in scanline order top-to-bottom. The data can be char, short int, int, float, or double. Float and double require the pixels to be normalized [0..1], otherwise [0..Max], where Max is the maximum value the type can accomodate (e.g. 255 for char). For example, to create a 640x480 image from unsigned red-green-blue character data, use MagickConstituteImage(wand,640,640,"RGB",CharPixel,pixels); The format of the MagickConstituteImage method is:
MagickBooleanType MagickConstituteImage(MagickWand *wand,
const unsigned long columns,const unsigned long rows,const char *map,
const StorageType storage,void *pixels)
A description of each parameter follows: wandthe magick wand. columnswidth in pixels of the image. rowsheight in pixels of the image. mapThis string reflects the expected ordering of the pixel array. It can be any combination or order of R = red, G = green, B = blue, A = alpha (0 is transparent), O = opacity (0 is opaque), C = cyan, Y = yellow, M = magenta, K = black, I = intensity (for grayscale), P = pad. storageDefine the data type of the pixels. Float and double types are expected to be normalized [0..1] otherwise [0..QuantumRange]. Choose from these types: CharPixel, DoublePixel, FloatPixel, IntegerPixel, LongPixel, QuantumPixel, or ShortPixel. pixelsThis array of values contain the pixel components as defined by map and type. You must preallocate this array where the expected length varies depending on the values of width, height, map, and type. MagickDecipherImage() converts cipher pixels to plain pixels. The format of the MagickDecipherImage method is:
MagickBooleanType MagickDecipherImage(MagickWand *wand,
const char *passphrase)
A description of each parameter follows: wandthe magick wand. passphrasethe passphrase. MagickDeconstructImages() compares each image with the next in a sequence and returns the maximum bounding region of any pixel differences it discovers. The format of the MagickDeconstructImages method is: MagickWand *MagickDeconstructImages(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickDeskewImage() removes skew from the image. Skew is an artifact that occurs in scanned images because of the camera being misaligned, imperfections in the scanning or surface, or simply because the paper was not placed completely flat when scanned. The format of the MagickDeskewImage method is:
MagickBooleanType MagickDeskewImage(MagickWand *wand,
const double threshold)
A description of each parameter follows: wandthe magick wand. thresholdseparate background from foreground. MagickDespeckleImage() reduces the speckle noise in an image while perserving the edges of the original image. The format of the MagickDespeckleImage method is: MagickBooleanType MagickDespeckleImage(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickDestroyImage() dereferences an image, deallocating memory associated with the image if the reference count becomes zero. The format of the MagickDestroyImage method is: Image *MagickDestroyImage(Image *image) A description of each parameter follows: imagethe image. MagickDisplayImage() displays an image. The format of the MagickDisplayImage method is:
MagickBooleanType MagickDisplayImage(MagickWand *wand,
const char *server_name)
A description of each parameter follows: wandthe magick wand. server_namethe X server name. MagickDisplayImages() displays an image or image sequence. The format of the MagickDisplayImages method is:
MagickBooleanType MagickDisplayImages(MagickWand *wand,
const char *server_name)
A description of each parameter follows: wandthe magick wand. server_namethe X server name. MagickDistortImage() distorts an image using various distortion methods, by mapping color lookups of the source image to a new destination image usally of the same size as the source image, unless 'bestfit' is set to true. If 'bestfit' is enabled, and distortion allows it, the destination image is adjusted to ensure the whole source 'image' will just fit within the final destination image, which will be sized and offset accordingly. Also in many cases the virtual offset of the source image will be taken into account in the mapping. The format of the MagickDistortImage method is:
MagickBooleanType MagickDistortImage(MagickWand *wand,
const DistortImageMethod method,const unsigned long number_arguments,
const double *arguments,const MagickBooleanType bestfit)
A description of each parameter follows: imagethe image to be distorted. methodthe method of image distortion. ArcDistortion always ignores the source image offset, and always 'bestfit' the destination image with the top left corner offset relative to the polar mapping center. Bilinear has no simple inverse mapping so it does not allow 'bestfit' style of image distortion. Affine, Perspective, and Bilinear, do least squares fitting of the distortion when more than the minimum number of control point pairs are provided. Perspective, and Bilinear, falls back to a Affine distortion when less that 4 control point pairs are provided. While Affine distortions let you use any number of control point pairs, that is Zero pairs is a no-Op (viewport only) distrotion, one pair is a translation and two pairs of control points do a scale-rotate-translate, without any shearing. number_argumentsthe number of arguments given for this distortion method. argumentsthe arguments for this distortion method. bestfitAttempt to resize destination to fit distorted source. MagickDrawImage() renders the drawing wand on the current image. The format of the MagickDrawImage method is:
MagickBooleanType MagickDrawImage(MagickWand *wand,
const DrawingWand *drawing_wand)
A description of each parameter follows: wandthe magick wand. drawing_wandthe draw wand. MagickEdgeImage() enhance edges within the image with a convolution filter of the given radius. Use a radius of 0 and Edge() selects a suitable radius for you. The format of the MagickEdgeImage method is: MagickBooleanType MagickEdgeImage(MagickWand *wand,const double radius) A description of each parameter follows: wandthe magick wand. radiusthe radius of the pixel neighborhood. MagickEmbossImage() returns a grayscale image with a three-dimensional effect. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and Emboss() selects a suitable radius for you. The format of the MagickEmbossImage method is:
MagickBooleanType MagickEmbossImage(MagickWand *wand,const double radius,
const double sigma)
A description of each parameter follows: wandthe magick wand. radiusthe radius of the Gaussian, in pixels, not counting the center pixel. sigmathe standard deviation of the Gaussian, in pixels. MagickEncipherImage() converts plaint pixels to cipher pixels. The format of the MagickEncipherImage method is:
MagickBooleanType MagickEncipherImage(MagickWand *wand,
const char *passphrase)
A description of each parameter follows: wandthe magick wand. passphrasethe passphrase. MagickEnhanceImage() applies a digital filter that improves the quality of a noisy image. The format of the MagickEnhanceImage method is: MagickBooleanType MagickEnhanceImage(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickEqualizeImage() equalizes the image histogram. The format of the MagickEqualizeImage method is:
MagickBooleanType MagickEqualizeImage(MagickWand *wand)
MagickBooleanType MagickEqualizeImageChannel(MagickWand *wand,
const ChannelType channel)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). MagickEvaluateImage() applys an arithmetic, relational, or logical expression to an image. Use these operators to lighten or darken an image, to increase or decrease contrast in an image, or to produce the "negative" of an image. The format of the MagickEvaluateImage method is:
MagickBooleanType MagickEvaluateImage(MagickWand *wand,
const MagickEvaluateOperator op,const double constant)
MagickBooleanType MagickEvaluateImageChannel(MagickWand *wand,
const MagickEvaluateOperator op,const double constant)
A description of each parameter follows: wandthe magick wand. opA channel operator. constantA constant value. MagickExtentImage() extends the image as defined by the geometry, gravity, and wand background color. Set the (x,y) offset of the geometry to move the original wand relative to the extended wand. The format of the MagickExtentImage method is:
MagickBooleanType MagickExtentImage(MagickWand *wand,
const unsigned long width,const unsigned long height,const long x,
const long y)
A description of each parameter follows: wandthe magick wand. widththe region width. heightthe region height. xthe region x offset. ythe region y offset. MagickFlipImage() creates a vertical mirror image by reflecting the pixels around the central x-axis. The format of the MagickFlipImage method is: MagickBooleanType MagickFlipImage(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickFloodfillPaintImage() changes the color value of any pixel that matches target and is an immediate neighbor. If the method FillToBorderMethod is specified, the color value is changed for any neighbor pixel that does not match the bordercolor member of image. The format of the MagickFloodfillPaintImage method is:
MagickBooleanType MagickFloodfillPaintImage(MagickWand *wand,
const ChannelType channel,const PixelWand *fill,const double fuzz,
const PixelWand *bordercolor,const long x,const long y,
const MagickBooleanType invert)
A description of each parameter follows: wandthe magick wand. channelthe channel(s). fillthe floodfill color pixel wand. fuzzBy default target must match a particular pixel color exactly. However, in many cases two colors may differ by a small amount. The fuzz member of image defines how much tolerance is acceptable to consider two colors as the same. For example, set fuzz to 10 and the color red at intensities of 100 and 102 respectively are now interpreted as the same color for the purposes of the floodfill. bordercolorthe border color pixel wand. x,ythe starting location of the operation. invertpaint any pixel that does not match the target color. MagickFlopImage() creates a horizontal mirror image by reflecting the pixels around the central y-axis. The format of the MagickFlopImage method is: MagickBooleanType MagickFlopImage(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickFrameImage() adds a simulated three-dimensional border around the image. The width and height specify the border width of the vertical and horizontal sides of the frame. The inner and outer bevels indicate the width of the inner and outer shadows of the frame. The format of the MagickFrameImage method is:
MagickBooleanType MagickFrameImage(MagickWand *wand,
const PixelWand *matte_color,const unsigned long width,
const unsigned long height,const long inner_bevel,
const long outer_bevel)
A description of each parameter follows: wandthe magick wand. matte_colorthe frame color pixel wand. widththe border width. heightthe border height. inner_bevelthe inner bevel width. outer_bevelthe outer bevel width. MagickFxImage() evaluate expression for each pixel in the image. The format of the MagickFxImage method is:
MagickWand *MagickFxImage(MagickWand *wand,const char *expression)
MagickWand *MagickFxImageChannel(MagickWand *wand,
const ChannelType channel,const char *expression)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). expressionthe expression. MagickGammaImage() gamma-corrects an image. The same image viewed on different devices will have perceptual differences in the way the image's intensities are represented on the screen. Specify individual gamma levels for the red, green, and blue channels, or adjust all three with the gamma parameter. Values typically range from 0.8 to 2.3. You can also reduce the influence of a particular channel with a gamma value of 0. The format of the MagickGammaImage method is:
MagickBooleanType MagickGammaImage(MagickWand *wand,const double gamma)
MagickBooleanType MagickGammaImageChannel(MagickWand *wand,
const ChannelType channel,const double gamma)
A description of each parameter follows: wandthe magick wand. channelthe channel. levelDefine the level of gamma correction. MagickGaussianBlurImage() blurs an image. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, the radius should be larger than sigma. Use a radius of 0 and MagickGaussianBlurImage() selects a suitable radius for you. The format of the MagickGaussianBlurImage method is:
MagickBooleanType MagickGaussianBlurImage(MagickWand *wand,
const double radius,const double sigma)
MagickBooleanType MagickGaussianBlurImageChannel(MagickWand *wand,
const ChannelType channel,const double radius,const double sigma)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). radiusthe radius of the Gaussian, in pixels, not counting the center pixel. sigmathe standard deviation of the Gaussian, in pixels. MagickGetImage() gets the image at the current image index. The format of the MagickGetImage method is: MagickWand *MagickGetImage(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageAlphaChannel() returns MagickFalse if the image alpha channel is not activated. That is, the image is RGB rather than RGBA or CMYK rather than CMYKA. The format of the MagickGetImageAlphaChannel method is: unsigned long MagickGetImageAlphaChannel(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageClipMask() gets the image clip mask at the current image index. The format of the MagickGetImageClipMask method is: MagickWand *MagickGetImageClipMask(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageBackgroundColor() returns the image background color. The format of the MagickGetImageBackgroundColor method is:
MagickBooleanType MagickGetImageBackgroundColor(MagickWand *wand,
PixelWand *background_color)
A description of each parameter follows: wandthe magick wand. background_colorReturn the background color. MagickGetImageBlob() implements direct to memory image formats. It returns the image as a blob and its length. Use MagickSetFormat() to set the format of the returned blob (GIF, JPEG, PNG, etc.). Use MagickRelinquishMemory() to free the blob when you are done with it. The format of the MagickGetImageBlob method is: unsigned char *MagickGetImageBlob(MagickWand *wand,size_t *length) A description of each parameter follows: wandthe magick wand. lengththe length of the blob. MagickGetImageBlob() implements direct to memory image formats. It returns the image sequence as a blob and its length. The format of the image determines the format of the returned blob (GIF, JPEG, PNG, etc.). To return a different image format, use MagickSetImageFormat(). Note, some image formats do not permit multiple images to the same image stream (e.g. JPEG). in this instance, just the first image of the sequence is returned as a blob. The format of the MagickGetImagesBlob method is: unsigned char *MagickGetImagesBlob(MagickWand *wand,size_t *length) A description of each parameter follows: wandthe magick wand. lengththe length of the blob. MagickGetImageBluePrimary() returns the chromaticy blue primary point for the image. The format of the MagickGetImageBluePrimary method is:
MagickBooleanType MagickGetImageBluePrimary(MagickWand *wand,double *x,
double *y)
A description of each parameter follows: wandthe magick wand. xthe chromaticity blue primary x-point. ythe chromaticity blue primary y-point. MagickGetImageBorderColor() returns the image border color. The format of the MagickGetImageBorderColor method is:
MagickBooleanType MagickGetImageBorderColor(MagickWand *wand,
PixelWand *border_color)
A description of each parameter follows: wandthe magick wand. border_colorReturn the border color. MagickGetImageChannelDepth() gets the depth for one or more image channels. The format of the MagickGetImageChannelDepth method is:
unsigned long MagickGetImageChannelDepth(MagickWand *wand,
const ChannelType channel)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). MagickGetImageChannelDistortion() compares one or more image channels of an image to a reconstructed image and returns the specified distortion metric. The format of the MagickGetImageChannelDistortion method is:
MagickBooleanType MagickGetImageChannelDistortion(MagickWand *wand,
const MagickWand *reference,const ChannelType channel,
const MetricType metric,double *distortion)
A description of each parameter follows: wandthe magick wand. referencethe reference wand. channelthe channel. metricthe metric. distortionthe computed distortion between the images. MagickGetImageChannelDistortions() compares one or more image channels of an image to a reconstructed image and returns the specified distortion metrics. Use MagickRelinquishMemory() to free the metrics when you are done with them. The format of the MagickGetImageChannelDistortion method is:
double *MagickGetImageChannelDistortion(MagickWand *wand,
const MagickWand *reference,const MetricType metric)
A description of each parameter follows: wandthe magick wand. referencethe reference wand. metricthe metric. MagickGetImageChannelMean() gets the mean and standard deviation of one or more image channels. The format of the MagickGetImageChannelMean method is:
MagickBooleanType MagickGetImageChannelMean(MagickWand *wand,
const ChannelType channel,double *mean,double *standard_deviation)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). meanThe mean pixel value for the specified channel(s). standard_deviationThe standard deviation for the specified channel(s). MagickGetImageChannelRange() gets the range for one or more image channels. The format of the MagickGetImageChannelRange method is:
MagickBooleanType MagickGetImageChannelRange(MagickWand *wand,
const ChannelType channel,double *minima,double *maxima)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). minimaThe minimum pixel value for the specified channel(s). maximaThe maximum pixel value for the specified channel(s). MagickGetImageChannelStatistics() returns statistics for each channel in the image. The statistics incude the channel depth, its minimand maxima, the mean, and the standard deviation. You can access the red channel mean, for example, like this: channel_statistics=MagickGetImageChannelStatistics(image,excepton); red_mean=channel_statistics[RedChannel].mean; Use MagickRelinquishMemory() to free the statistics buffer. The format of the MagickGetImageChannelStatistics method is: ChannelStatistics *MagickGetImageChannelStatistics(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageColormapColor() returns the color of the specified colormap index. The format of the MagickGetImageColormapColor method is:
MagickBooleanType MagickGetImageColormapColor(MagickWand *wand,
const unsigned long index,PixelWand *color)
A description of each parameter follows: wandthe magick wand. indexthe offset into the image colormap. colorReturn the colormap color in this wand. MagickGetImageColors() gets the number of unique colors in the image. The format of the MagickGetImageColors method is: unsigned long MagickGetImageColors(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageColorspace() gets the image colorspace. The format of the MagickGetImageColorspace method is: ColorspaceType MagickGetImageColorspace(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageCompose() returns the composite operator associated with the image. The format of the MagickGetImageCompose method is: CompositeOperator MagickGetImageCompose(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageCompression() gets the image compression. The format of the MagickGetImageCompression method is: CompressionType MagickGetImageCompression(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageCompression() gets the image compression quality. The format of the MagickGetImageCompression method is: unsigned long MagickGetImageCompression(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageDelay() gets the image delay. The format of the MagickGetImageDelay method is: unsigned long MagickGetImageDelay(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageDepth() gets the image depth. The format of the MagickGetImageDepth method is: unsigned long MagickGetImageDepth(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageDistortion() compares an image to a reconstructed image and returns the specified distortion metric. The format of the MagickGetImageDistortion method is:
MagickBooleanType MagickGetImageDistortion(MagickWand *wand,
const MagickWand *reference,const MetricType metric,
double *distortion)
A description of each parameter follows: wandthe magick wand. referencethe reference wand. metricthe metric. distortionthe computed distortion between the images. MagickGetImageDispose() gets the image disposal method. The format of the MagickGetImageDispose method is: DisposeType MagickGetImageDispose(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageFilename() returns the filename of a particular image in a sequence. The format of the MagickGetImageFilename method is: char *MagickGetImageFilename(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageFormat() returns the format of a particular image in a sequence. The format of the MagickGetImageFormat method is: const char MagickGetImageFormat(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageGamma() gets the image gamma. The format of the MagickGetImageGamma method is: double MagickGetImageGamma(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageGravity() gets the image gravity. The format of the MagickGetImageGravity method is: GravityType MagickGetImageGravity(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageGreenPrimary() returns the chromaticy green primary point. The format of the MagickGetImageGreenPrimary method is:
MagickBooleanType MagickGetImageGreenPrimary(MagickWand *wand,double *x,
double *y)
A description of each parameter follows: wandthe magick wand. xthe chromaticity green primary x-point. ythe chromaticity green primary y-point. MagickGetImageHeight() returns the image height. The format of the MagickGetImageHeight method is: unsigned long MagickGetImageHeight(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageHistogram() returns the image histogram as an array of PixelWand wands. The format of the MagickGetImageHistogram method is:
PixelWand *MagickGetImageHistogram(MagickWand *wand,
unsigned long *number_colors)
A description of each parameter follows: wandthe magick wand. number_colorsthe number of unique colors in the image and the number of pixel wands returned. MagickGetImageInterlaceScheme() gets the image interlace scheme. The format of the MagickGetImageInterlaceScheme method is: InterlaceType MagickGetImageInterlaceScheme(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageInterpolateMethod() returns the interpolation method for the sepcified image. The format of the MagickGetImageInterpolateMethod method is: InterpolatePixelMethod MagickGetImageInterpolateMethod(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageIterations() gets the image iterations. The format of the MagickGetImageIterations method is: unsigned long MagickGetImageIterations(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageLength() returns the image length in bytes. The format of the MagickGetImageLength method is:
MagickBooleanType MagickGetImageLength(MagickWand *wand,
MagickSizeType *length)
A description of each parameter follows: wandthe magick wand. lengththe image length in bytes. MagickGetImageMatteColor() returns the image matte color. The format of the MagickGetImageMatteColor method is:
MagickBooleanType MagickGetImagematteColor(MagickWand *wand,
PixelWand *matte_color)
A description of each parameter follows: wandthe magick wand. matte_colorReturn the matte color. MagickGetImageOrientation() returns the image orientation. The format of the MagickGetImageOrientation method is: OrientationType MagickGetImageOrientation(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImagePage() returns the page geometry associated with the image. The format of the MagickGetImagePage method is:
MagickBooleanType MagickGetImagePage(MagickWand *wand,
unsigned long *width,unsigned long *height,long *x,long *y)
A description of each parameter follows: wandthe magick wand. widththe page width. heightthe page height. xthe page x-offset. ythe page y-offset. MagickGetImagePixelColor() returns the color of the specified pixel. The format of the MagickGetImagePixelColor method is:
MagickBooleanType MagickGetImagePixelColor(MagickWand *wand,
const long x,const long y,PixelWand *color)
A description of each parameter follows: wandthe magick wand. x,ythe pixel offset into the image. colorReturn the colormap color in this wand. MagickGetAuthenticPixels() extracts pixel data from an image and returns it to you. The method returns MagickTrue on success otherwise MagickFalse if an error is encountered. The data is returned as char, short int, int, long, float, or double in the order specified by map. Suppose you want to extract the first scanline of a 640x480 image as character data in red-green-blue order: MagickGetAuthenticPixels(wand,0,0,640,1,"RGB",CharPixel,pixels); The format of the MagickGetAuthenticPixels method is:
MagickBooleanType MagickGetAuthenticPixels(MagickWand *wand,
const long x,const long y,const unsigned long columns,
const unsigned long rows,const char *map,const StorageType storage,
void *pixels)
A description of each parameter follows: wandthe magick wand. x, y, columns, rowsThese values define the perimeter of a region of pixels you want to extract. mapThis string reflects the expected ordering of the pixel array. It can be any combination or order of R = red, G = green, B = blue, A = alpha (0 is transparent), O = opacity (0 is opaque), C = cyan, Y = yellow, M = magenta, K = black, I = intensity (for grayscale), P = pad. storageDefine the data type of the pixels. Float and double types are expected to be normalized [0..1] otherwise [0..QuantumRange]. Choose from these types: CharPixel, DoublePixel, FloatPixel, IntegerPixel, LongPixel, QuantumPixel, or ShortPixel. pixelsThis array of values contain the pixel components as defined by map and type. You must preallocate this array where the expected length varies depending on the values of width, height, map, and type. MagickGetImageRedPrimary() returns the chromaticy red primary point. The format of the MagickGetImageRedPrimary method is:
MagickBooleanType MagickGetImageRedPrimary(MagickWand *wand,double *x,
double *y)
A description of each parameter follows: wandthe magick wand. xthe chromaticity red primary x-point. ythe chromaticity red primary y-point. MagickGetImageRegion() extracts a region of the image and returns it as a a new wand. The format of the MagickGetImageRegion method is:
MagickWand *MagickGetImageRegion(MagickWand *wand,
const unsigned long width,const unsigned long height,const long x,
const long y)
A description of each parameter follows: wandthe magick wand. widththe region width. heightthe region height. xthe region x offset. ythe region y offset. MagickGetImageRenderingIntent() gets the image rendering intent. The format of the MagickGetImageRenderingIntent method is: RenderingIntent MagickGetImageRenderingIntent(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageResolution() gets the image X and Y resolution. The format of the MagickGetImageResolution method is:
MagickBooleanType MagickGetImageResolution(MagickWand *wand,double *x,
double *y)
A description of each parameter follows: wandthe magick wand. xthe image x-resolution. ythe image y-resolution. MagickGetImageScene() gets the image scene. The format of the MagickGetImageScene method is: unsigned long MagickGetImageScene(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageSignature() generates an SHA-256 message digest for the image pixel stream. The format of the MagickGetImageSignature method is: const char MagickGetImageSignature(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageTicksPerSecond() gets the image ticks-per-second. The format of the MagickGetImageTicksPerSecond method is: unsigned long MagickGetImageTicksPerSecond(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageType() gets the potential image type: Bilevel Grayscale GrayscaleMatte Palette PaletteMatte TrueColor TrueColorMatte ColorSeparation ColorSeparationMatte To ensure the image type matches its potential, use MagickSetImageType():
(void) MagickSetImageType(wand,MagickGetImageType(wand));
The format of the MagickGetImageType method is: ImageType MagickGetImageType(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageUnits() gets the image units of resolution. The format of the MagickGetImageUnits method is: ResolutionType MagickGetImageUnits(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageVirtualPixelMethod() returns the virtual pixel method for the sepcified image. The format of the MagickGetImageVirtualPixelMethod method is: VirtualPixelMethod MagickGetImageVirtualPixelMethod(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageWhitePoint() returns the chromaticy white point. The format of the MagickGetImageWhitePoint method is:
MagickBooleanType MagickGetImageWhitePoint(MagickWand *wand,double *x,
double *y)
A description of each parameter follows: wandthe magick wand. xthe chromaticity white x-point. ythe chromaticity white y-point. MagickGetImageWidth() returns the image width. The format of the MagickGetImageWidth method is: unsigned long MagickGetImageWidth(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetNumberImages() returns the number of images associated with a magick wand. The format of the MagickGetNumberImages method is: unsigned long MagickGetNumberImages(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickGetImageTotalInkDensity() gets the image total ink density. The format of the MagickGetImageTotalInkDensity method is: double MagickGetImageTotalInkDensity(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickHasNextImage() returns MagickTrue if the wand has more images when traversing the list in the forward direction The format of the MagickHasNextImage method is: MagickBooleanType MagickHasNextImage(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickHasPreviousImage() returns MagickTrue if the wand has more images when traversing the list in the reverse direction The format of the MagickHasPreviousImage method is: MagickBooleanType MagickHasPreviousImage(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickIdentifyImage() identifies an image by printing its attributes to the file. Attributes include the image width, height, size, and others. The format of the MagickIdentifyImage method is: const char *MagickIdentifyImage(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickImplodeImage() creates a new image that is a copy of an existing one with the image pixels "implode" by the specified percentage. It allocates the memory necessary for the new Image structure and returns a pointer to the new image. The format of the MagickImplodeImage method is:
MagickBooleanType MagickImplodeImage(MagickWand *wand,
const double radius)
A description of each parameter follows: wandthe magick wand. amountDefine the extent of the implosion. MagickLabelImage() adds a label to your image. The format of the MagickLabelImage method is: MagickBooleanType MagickLabelImage(MagickWand *wand,const char *label) A description of each parameter follows: wandthe magick wand. labelthe image label. MagickLevelImage() adjusts the levels of an image by scaling the colors falling between specified white and black points to the full available quantum range. The parameters provided represent the black, mid, and white points. The black point specifies the darkest color in the image. Colors darker than the black point are set to zero. Mid point specifies a gamma correction to apply to the image. White point specifies the lightest color in the image. Colors brighter than the white point are set to the maximum quantum value. The format of the MagickLevelImage method is:
MagickBooleanType MagickLevelImage(MagickWand *wand,
const double black_point,const double gamma,const double white_point)
MagickBooleanType MagickLevelImageChannel(MagickWand *wand,
const ChannelType channel,const double black_point,const double gamma,
const double white_point)
A description of each parameter follows: wandthe magick wand. channelIdentify which channel to level: RedChannel, GreenChannel, black_pointthe black point. gammathe gamma. white_pointthe white point. MagickLinearStretchImage() stretches with saturation the image intensity. You can also reduce the influence of a particular channel with a gamma value of 0. The format of the MagickLinearStretchImage method is:
MagickBooleanType MagickLinearStretchImage(MagickWand *wand,
const double black_point,const double white_point)
A description of each parameter follows: wandthe magick wand. black_pointthe black point. white_pointthe white point. MagickLiquidRescaleImage() rescales image with seam carving. MagickBooleanType MagickLiquidRescaleImage(MagickWand *wand, const unsigned long columns,const unsigned long rows, const double delta_x,const double rigidity) A description of each parameter follows: wandthe magick wand. columnsthe number of columns in the scaled image. rowsthe number of rows in the scaled image. delta_xmaximum seam transversal step (0 means straight seams). rigidityintroduce a bias for non-straight seams (typically 0). MagickMagnifyImage() is a convenience method that scales an image proportionally to twice its original size. The format of the MagickMagnifyImage method is: MagickBooleanType MagickMagnifyImage(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickMedianFilterImage() applies a digital filter that improves the quality of a noisy image. Each pixel is replaced by the median in a set of neighboring pixels as defined by radius. The format of the MagickMedianFilterImage method is:
MagickBooleanType MagickMedianFilterImage(MagickWand *wand,
const double radius)
A description of each parameter follows: wandthe magick wand. radiusthe radius of the pixel neighborhood. MagickMergeImageLayers() composes all the image layers from the current given image onward to produce a single image of the merged layers. The inital canvas's size depends on the given ImageLayerMethod, and is initialized using the first images background color. The images are then compositied onto that image in sequence using the given composition that has been assigned to each individual image. The format of the MagickMergeImageLayers method is:
MagickWand *MagickMergeImageLayers(MagickWand *wand,
const ImageLayerMethod method)
A description of each parameter follows: wandthe magick wand. methodthe method of selecting the size of the initial canvas. MergeLayer: Merge all layers onto a canvas just large enough to hold all the actual images. The virtual canvas of the first image is preserved but otherwise ignored. FlattenLayer: Use the virtual canvas size of first image. Images which fall outside this canvas is clipped. This can be used to 'fill out' a given virtual canvas. MosaicLayer: Start with the virtual canvas of the first image, enlarging left and right edges to contain all images. Images with negative offsets will be clipped. MagickMinifyImage() is a convenience method that scales an image proportionally to one-half its original size The format of the MagickMinifyImage method is: MagickBooleanType MagickMinifyImage(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickModulateImage() lets you control the brightness, saturation, and hue of an image. Hue is the percentage of absolute rotation from the current position. For example 50 results in a counter-clockwise rotation of 90 degrees, 150 results in a clockwise rotation of 90 degrees, with 0 and 200 both resulting in a rotation of 180 degrees. To increase the color brightness by 20 and decrease the color saturation by 10 and leave the hue unchanged, use: 120,90,100. The format of the MagickModulateImage method is:
MagickBooleanType MagickModulateImage(MagickWand *wand,
const double brightness,const double saturation,const double hue)
A description of each parameter follows: wandthe magick wand. brightnessthe percent change in brighness. saturationthe percent change in saturation. huethe percent change in hue. MagickMontageImage() creates a composite image by combining several separate images. The images are tiled on the composite image with the name of the image optionally appearing just below the individual tile. The format of the MagickMontageImage method is:
MagickWand *MagickMontageImage(MagickWand *wand,
const DrawingWand drawing_wand,const char *tile_geometry,
const char *thumbnail_geometry,const MontageMode mode,
const char *frame)
A description of each parameter follows: wandthe magick wand. drawing_wandthe drawing wand. The font name, size, and color are obtained from this wand. tile_geometrythe number of tiles per row and page (e.g. 6x4+0+0). thumbnail_geometryPreferred image size and border size of each thumbnail (e.g. 120x120+4+3>). modeThumbnail framing mode: Frame, Unframe, or Concatenate. frameSurround the image with an ornamental border (e.g. 15x15+3+3). The frame color is that of the thumbnail's matte color. MagickMorphImages() method morphs a set of images. Both the image pixels and size are linearly interpolated to give the appearance of a meta-morphosis from one image to the next. The format of the MagickMorphImages method is:
MagickWand *MagickMorphImages(MagickWand *wand,
const unsigned long number_frames)
A description of each parameter follows: wandthe magick wand. number_framesthe number of in-between images to generate. MagickMotionBlurImage() simulates motion blur. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and MotionBlurImage() selects a suitable radius for you. Angle gives the angle of the blurring motion. The format of the MagickMotionBlurImage method is:
MagickBooleanType MagickMotionBlurImage(MagickWand *wand,
const double radius,const double sigma,const double angle)
MagickBooleanType MagickMotionBlurImageChannel(MagickWand *wand,
const ChannelType channel,const double radius,const double sigma,
const double angle)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). radiusthe radius of the Gaussian, in pixels, not counting the center pixel. sigmathe standard deviation of the Gaussian, in pixels. angleApply the effect along this angle. MagickNegateImage() negates the colors in the reference image. The Grayscale option means that only grayscale values within the image are negated. You can also reduce the influence of a particular channel with a gamma value of 0. The format of the MagickNegateImage method is:
MagickBooleanType MagickNegateImage(MagickWand *wand,
const MagickBooleanType gray)
MagickBooleanType MagickNegateImage(MagickWand *wand,
const ChannelType channel,const MagickBooleanType gray)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). grayIf MagickTrue, only negate grayscale pixels within the image. MagickNewImage() adds a blank image canvas of the specified size and background color to the wand. The format of the MagickNewImage method is:
MagickBooleanType MagickNewImage(MagickWand *wand,
const unsigned long columns,const unsigned long rows,
const PixelWand *background)
A description of each parameter follows: wandthe magick wand. widththe image width. heightthe image height. backgroundthe image color. MagickNextImage() associates the next image in the image list with a magick wand. The format of the MagickNextImage method is: MagickBooleanType MagickNextImage(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickNormalizeImage() enhances the contrast of a color image by adjusting the pixels color to span the entire range of colors available You can also reduce the influence of a particular channel with a gamma value of 0. The format of the MagickNormalizeImage method is:
MagickBooleanType MagickNormalizeImage(MagickWand *wand)
MagickBooleanType MagickNormalizeImageChannel(MagickWand *wand,
const ChannelType channel)
A description of each parameter follows: wandthe magick wand. channelthe image channel(s). MagickOilPaintImage() applies a special effect filter that simulates an oil painting. Each pixel is replaced by the most frequent color occurring in a circular region defined by radius. The format of the MagickOilPaintImage method is:
MagickBooleanType MagickOilPaintImage(MagickWand *wand,
const double radius)
A description of each parameter follows: wandthe magick wand. radiusthe radius of the circular neighborhood. MagickOpaquePaintImage() changes any pixel that matches color with the color defined by fill. The format of the MagickOpaquePaintImage method is:
MagickBooleanType MagickOpaquePaintImage(MagickWand *wand,
const PixelWand *target,const PixelWand *fill,const double fuzz,
const MagickBooleanType invert)
MagickBooleanType MagickOpaquePaintImageChannel(MagickWand *wand,
const ChannelType channel,const PixelWand *target,
const PixelWand *fill,const double fuzz,const MagickBooleanType invert)
A description of each parameter follows: wandthe magick wand. channelthe channel(s). targetChange this target color to the fill color within the image. fillthe fill pixel wand. fuzzBy default target must match a particular pixel color exactly. However, in many cases two colors may differ by a small amount. The fuzz member of image defines how much tolerance is acceptable to consider two colors as the same. For example, set fuzz to 10 and the color red at intensities of 100 and 102 respectively are now interpreted as the same color for the purposes of the floodfill. invertpaint any pixel that does not match the target color. MagickOptimizeImageLayers() compares each image the GIF disposed forms of the previous image in the sequence. From this it attempts to select the smallest cropped image to replace each frame, while preserving the results of the animation. The format of the MagickOptimizeImageLayers method is: MagickWand *MagickOptimizeImageLayers(MagickWand *wand) A description of each parameter follows: wandthe magick wand. MagickOrderedPosterizeImage() performs an ordered dither based on a number of pre-defined dithering threshold maps, but over multiple intensity levels, which can be different for different channels, according to the input arguments. The format of the MagickOrderedPosterizeImage method is:
MagickBooleanType MagickOrderedPosterizeImage(MagickWand *wand,
const char *threshold_map)
MagickBooleanType MagickOrderedPosterizeImageChannel(MagickWand *wand,
const ChannelType channel,const char *threshold_map)
A description of each parameter follows: imagethe image. channelthe channel or channels to be thresholded. threshold_mapA string containing the name of the threshold dither map to use, followed by zero or more numbers representing the number of color levels tho dither between. Any level number less than 2 is equivelent to 2, and means only binary dithering will be applied to each color channel. No numbers also means a 2 level (bitmap) dither will be applied to all channels, while a single number is the number of levels applied to each channel in sequence. More numbers will be applied in turn to each of the color channels. For example: "o3x3,6" generates a 6 level posterization of the image with a ordered 3x3 diffused pixel dither being applied between each level. While checker,8,8,4 will produce a 332 colormaped image with only a single checkerboard hash pattern (50 grey) between each color level, to basically double the number of color levels with a bare minimim of dithering. MagickPingImage() is like MagickReadImage() except the only valid information returned is the image width, height, size, and format. It is designed to efficiently obtain this information from a file without reading the entire image sequence into memory. The format of the MagickPingImage method is: MagickBooleanType MagickPingImage(MagickWand *wand,const char *filename) A description of each parameter follows: wandthe magick wand. filenamethe image filename. MagickPingImageBlob() pings an image or image sequence from a blob. The format of the MagickPingImageBlob method is:
MagickBooleanType MagickPingImageBlob(MagickWand *wand,
const void *blob,const size_t length)
A description of each parameter follows: wandthe magick wand. blobthe blob. lengththe blob length. MagickPingImageFile() pings an image or image sequence from an open file descriptor. The format of the MagickPingImageFile method is: MagickBooleanType MagickPingImageFile(MagickWand *wand,FILE *file) A description of each parameter follows: wandthe magick wand. filethe file descriptor. MagickPolaroidImage() simulates a Polaroid picture. The format of the MagickPolaroidImage method is:
MagickBooleanType MagickPolaroidImage(MagickWand *wand,
const DrawingWand *drawing_wand,const double angle)
A description of each parameter follows: wandthe magick wand. drawing_wandthe draw wand. angleApply the effect along this angle. MagickPosterizeImage() reduces the image to a limited number of color level. The format of the MagickPosterizeImage method is:
MagickBooleanType MagickPosterizeImage(MagickWand *wand,
const unsigned levels,const MagickBooleanType dither)
A description of each parameter follows: wandthe magick wand. levelsNumber of color levels allowed in eac |