threshold.c File Reference

#include "MagickCore/studio.h"
#include "MagickCore/property.h"
#include "MagickCore/blob.h"
#include "MagickCore/cache-view.h"
#include "MagickCore/color.h"
#include "MagickCore/color-private.h"
#include "MagickCore/colormap.h"
#include "MagickCore/colorspace.h"
#include "MagickCore/configure.h"
#include "MagickCore/constitute.h"
#include "MagickCore/decorate.h"
#include "MagickCore/draw.h"
#include "MagickCore/enhance.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/effect.h"
#include "MagickCore/fx.h"
#include "MagickCore/gem.h"
#include "MagickCore/geometry.h"
#include "MagickCore/image-private.h"
#include "MagickCore/list.h"
#include "MagickCore/log.h"
#include "MagickCore/memory_.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/montage.h"
#include "MagickCore/option.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/quantize.h"
#include "MagickCore/quantum.h"
#include "MagickCore/random_.h"
#include "MagickCore/random-private.h"
#include "MagickCore/resize.h"
#include "MagickCore/resource_.h"
#include "MagickCore/segment.h"
#include "MagickCore/shear.h"
#include "MagickCore/signature-private.h"
#include "MagickCore/string_.h"
#include "MagickCore/string-private.h"
#include "MagickCore/thread-private.h"
#include "MagickCore/threshold.h"
#include "MagickCore/token.h"
#include "MagickCore/transform.h"
#include "MagickCore/xml-tree.h"
#include "MagickCore/xml-tree-private.h"

Include dependency graph for threshold.c:

Go to the source code of this file.

Data Structures
struct	_ThresholdMap
Defines
#define	ThresholdsFilename   "thresholds.xml"
#define	AdaptiveThresholdImageTag   "AdaptiveThreshold/Image"
#define	ThresholdImageTag   "Threshold/Image"
#define	ThresholdImageTag   "Threshold/Image"
#define	ClampImageTag   "Clamp/Image"
#define	DitherImageTag   "Dither/Image"
#define	ThresholdImageTag   "Threshold/Image"
#define	ThresholdImageTag   "Threshold/Image"
Functions
static ThresholdMap *	GetThresholdMapFile (const char *, const char *, const char *, ExceptionInfo *)
MagickExport Image *	AdaptiveThresholdImage (const Image *image, const size_t width, const size_t height, const double bias, ExceptionInfo *exception)
MagickExport MagickBooleanType	BilevelImage (Image *image, const double threshold, ExceptionInfo *exception)
MagickExport MagickBooleanType	BlackThresholdImage (Image *image, const char *thresholds, ExceptionInfo *exception)
static Quantum	ClampToUnsignedQuantum (const Quantum quantum)
MagickExport MagickBooleanType	ClampImage (Image *image, ExceptionInfo *exception)
MagickExport ThresholdMap *	DestroyThresholdMap (ThresholdMap *map)
MagickExport ThresholdMap *	GetThresholdMap (const char *map_id, ExceptionInfo *exception)
MagickBooleanType	ListThresholdMapFile (FILE *file, const char *xml, const char *filename, ExceptionInfo *exception)
MagickExport MagickBooleanType	ListThresholdMaps (FILE *file, ExceptionInfo *exception)
MagickExport MagickBooleanType	OrderedPosterizeImage (Image *image, const char *threshold_map, ExceptionInfo *exception)
MagickExport MagickBooleanType	RandomThresholdImage (Image *image, const char *thresholds, ExceptionInfo *exception)
MagickExport MagickBooleanType	WhiteThresholdImage (Image *image, const char *thresholds, ExceptionInfo *exception)

---

Define Documentation

#define AdaptiveThresholdImageTag   "AdaptiveThreshold/Image"

Referenced by AdaptiveThresholdImage().

#define ClampImageTag   "Clamp/Image"

Referenced by ClampImage().

#define DitherImageTag   "Dither/Image"

#define ThresholdImageTag   "Threshold/Image"

Referenced by BilevelImage(), BlackThresholdImage(), RandomThresholdImage(), and WhiteThresholdImage().

#define ThresholdImageTag   "Threshold/Image"

#define ThresholdImageTag   "Threshold/Image"

#define ThresholdImageTag   "Threshold/Image"

#define ThresholdsFilename   "thresholds.xml"

Definition at line 92 of file threshold.c.

Referenced by GetThresholdMap(), and ListThresholdMaps().

---

Function Documentation

MagickExport Image* AdaptiveThresholdImage	(	const Image *	image,
		const size_t	width,
		const size_t	height,
		const double	bias,
		ExceptionInfo *	exception
	)

Definition at line 152 of file threshold.c.

References _Image::signature, MagickSignature, _Image::debug, MagickFalse, LogMagickEvent(), TraceEvent, GetMagickModule, _Image::filename, _ExceptionInfo::signature, ThrowImageException, OptionError, CloneImage(), _Image::columns, _Image::rows, MagickTrue, SetImageStorageClass(), DirectClass, DestroyImage(), AcquireCacheView(), GetCacheViewVirtualPixels(), QueueCacheViewAuthenticPixels(), GetPixelChannels(), GetPixelChannelMapChannel(), GetPixelChannelMapTraits(), UndefinedPixelTrait, CopyPixelTrait, GetPixelMask(), SetPixelChannel(), QuantumRange, SyncCacheViewAuthenticPixels(), _Image::progress_monitor, SetImageProgress(), AdaptiveThresholdImageTag, _Image::type, and DestroyCacheView().

MagickExport MagickBooleanType BilevelImage	(	Image *	image,
		const double	threshold,
		ExceptionInfo *	exception
	)

Definition at line 358 of file threshold.c.

References _Image::signature, MagickSignature, _Image::debug, MagickFalse, LogMagickEvent(), TraceEvent, GetMagickModule, _Image::filename, SetImageStorageClass(), DirectClass, MagickTrue, AcquireCacheView(), _Image::rows, GetCacheViewAuthenticPixels(), _Image::columns, GetPixelMask(), GetPixelChannels(), GetPixelChannelMapChannel(), GetPixelChannelMapTraits(), UpdatePixelTrait, QuantumRange, SyncCacheViewAuthenticPixels(), _Image::progress_monitor, SetImageProgress(), ThresholdImageTag, and DestroyCacheView().

Referenced by PreviewImage(), and SetImageType().

MagickExport MagickBooleanType BlackThresholdImage	(	Image *	image,
		const char *	thresholds,
		ExceptionInfo *	exception
	)

Definition at line 481 of file threshold.c.

References _Image::signature, MagickSignature, _Image::debug, MagickFalse, LogMagickEvent(), TraceEvent, GetMagickModule, _Image::filename, MagickTrue, SetImageStorageClass(), DirectClass, ParseGeometry(), _GeometryInfo::rho, SigmaValue, _GeometryInfo::sigma, XiValue, _GeometryInfo::xi, PsiValue, _GeometryInfo::psi, ChiValue, _GeometryInfo::chi, PercentValue, QuantumRange, AcquireCacheView(), _Image::rows, GetCacheViewAuthenticPixels(), _Image::columns, GetPixelMask(), GetPixelChannels(), GetPixelChannelMapChannel(), GetPixelChannelMapTraits(), UpdatePixelTrait, SyncCacheViewAuthenticPixels(), _Image::progress_monitor, SetImageProgress(), ThresholdImageTag, and DestroyCacheView().

MagickExport MagickBooleanType ClampImage	(	Image *	image,
		ExceptionInfo *	exception
	)

Definition at line 646 of file threshold.c.

References _Image::signature, MagickSignature, _Image::debug, MagickFalse, LogMagickEvent(), TraceEvent, GetMagickModule, _Image::filename, _Image::storage_class, PseudoClass, _Image::colormap, _Image::colors, _PixelInfo::red, ClampToUnsignedQuantum(), SyncImage(), MagickTrue, AcquireCacheView(), _Image::rows, GetCacheViewAuthenticPixels(), _Image::columns, GetPixelMask(), GetPixelChannels(), GetPixelChannelMapChannel(), GetPixelChannelMapTraits(), UndefinedPixelTrait, SyncCacheViewAuthenticPixels(), _Image::progress_monitor, SetImageProgress(), ClampImageTag, and DestroyCacheView().

static Quantum ClampToUnsignedQuantum

(

const Quantum

quantum

)

[inline, static]

Definition at line 633 of file threshold.c.

References QuantumRange.

Referenced by ClampImage().

MagickExport ThresholdMap* DestroyThresholdMap

(

ThresholdMap *

map

)

Definition at line 778 of file threshold.c.

References _ThresholdMap::map_id, DestroyString(), _ThresholdMap::description, _ThresholdMap::levels, and RelinquishMagickMemory().

Referenced by GetThresholdMapFile(), and OrderedPosterizeImage().

MagickExport ThresholdMap* GetThresholdMap	(	const char *	map_id,
		ExceptionInfo *	exception
	)

Definition at line 817 of file threshold.c.

References GetConfigureOptions(), ThresholdsFilename, GetNextValueInLinkedList(), GetThresholdMapFile(), GetStringInfoDatum(), GetStringInfoPath(), and DestroyConfigureOptions().

Referenced by OrderedPosterizeImage().

static ThresholdMap * GetThresholdMapFile	(	const char *	xml,
		const char *	filename,
		const char *	map_id,
		ExceptionInfo *	exception
	)		[static]

Definition at line 869 of file threshold.c.

References LogMagickEvent(), ConfigureEvent, GetMagickModule, NewXMLTree(), GetXMLTreeChild(), GetNextXMLTreeTag(), GetXMLTreeAttribute(), LocaleCompare(), ThrowMagickException(), OptionError, DestroyXMLTree(), AcquireMagickMemory(), ThrowFatalException, ResourceLimitFatalError, _ThresholdMap::map_id, _ThresholdMap::description, _ThresholdMap::levels, ConstantString(), GetXMLTreeContent(), DestroyThresholdMap(), _ThresholdMap::width, StringToUnsignedLong(), _ThresholdMap::height, _ThresholdMap::divisor, StringToLong(), and AcquireQuantumMemory().

Referenced by GetThresholdMap().

MagickBooleanType ListThresholdMapFile	(	FILE *	file,
		const char *	xml,
		const char *	filename,
		ExceptionInfo *	exception
	)

Definition at line 1074 of file threshold.c.

References LogMagickEvent(), ConfigureEvent, GetMagickModule, NewXMLTree(), MagickFalse, FormatLocaleFile(), GetXMLTreeChild(), GetNextXMLTreeTag(), GetXMLTreeAttribute(), ThrowMagickException(), OptionError, DestroyXMLTree(), GetXMLTreeContent(), and MagickTrue.

Referenced by ListThresholdMaps().

MagickExport MagickBooleanType ListThresholdMaps	(	FILE *	file,
		ExceptionInfo *	exception
	)

Definition at line 1158 of file threshold.c.

References MagickFalse, GetConfigureOptions(), ThresholdsFilename, FormatLocaleFile(), GetNextValueInLinkedList(), GetStringInfoPath(), ListThresholdMapFile(), GetStringInfoDatum(), DestroyConfigureOptions(), and MagickTrue.

MagickExport MagickBooleanType OrderedPosterizeImage	(	Image *	image,
		const char *	threshold_map,
		ExceptionInfo *	exception
	)

Definition at line 1234 of file threshold.c.

References MaxTextExtent, CompositePixelChannel, _Image::signature, MagickSignature, _Image::debug, MagickFalse, LogMagickEvent(), TraceEvent, GetMagickModule, _Image::filename, _ExceptionInfo::signature, MagickTrue, GetThresholdMap(), ThrowMagickException(), OptionError, MaxPixelChannels, GetMagickToken(), StringToDouble(), SetImageStorageClass(), DirectClass, AcquireCacheView(), _Image::rows, GetCacheViewAuthenticPixels(), _Image::columns, GetPixelMask(), GetPixelChannels(), GetPixelChannelMapChannel(), GetPixelChannelMapTraits(), UpdatePixelTrait, MagickEpsilon, QuantumScale, _ThresholdMap::divisor, RoundToQuantum, _ThresholdMap::levels, _ThresholdMap::width, _ThresholdMap::height, QuantumRange, SyncCacheViewAuthenticPixels(), _Image::progress_monitor, SetImageProgress(), DitherImageTag, DestroyCacheView(), and DestroyThresholdMap().

MagickExport MagickBooleanType RandomThresholdImage	(	Image *	image,
		const char *	thresholds,
		ExceptionInfo *	exception
	)

Definition at line 1425 of file threshold.c.

References random_info, _Image::signature, MagickSignature, _Image::debug, MagickFalse, LogMagickEvent(), TraceEvent, GetMagickModule, _Image::filename, _ExceptionInfo::signature, MagickTrue, GetPixelInfo(), QuantumRange, ParseGeometry(), _GeometryInfo::rho, _GeometryInfo::sigma, SigmaValue, SetImageStorageClass(), DirectClass, AcquireRandomInfoThreadSet(), AcquireCacheView(), _Image::rows, GetOpenMPThreadId(), GetCacheViewAuthenticPixels(), _Image::columns, GetPixelMask(), GetPixelChannels(), GetPixelChannelMapChannel(), GetPixelChannelMapTraits(), UpdatePixelTrait, GetPseudoRandomValue(), SyncCacheViewAuthenticPixels(), _Image::progress_monitor, SetImageProgress(), ThresholdImageTag, DestroyCacheView(), and DestroyRandomInfoThreadSet().

MagickExport MagickBooleanType WhiteThresholdImage	(	Image *	image,
		const char *	thresholds,
		ExceptionInfo *	exception
	)

Definition at line 1598 of file threshold.c.

References _Image::signature, MagickSignature, _Image::debug, MagickFalse, LogMagickEvent(), TraceEvent, GetMagickModule, _Image::filename, MagickTrue, SetImageStorageClass(), DirectClass, ParseGeometry(), _GeometryInfo::rho, SigmaValue, _GeometryInfo::sigma, XiValue, _GeometryInfo::xi, PsiValue, _GeometryInfo::psi, ChiValue, _GeometryInfo::chi, PercentValue, QuantumRange, AcquireCacheView(), _Image::rows, GetCacheViewAuthenticPixels(), _Image::columns, GetPixelMask(), GetPixelChannels(), GetPixelChannelMapChannel(), GetPixelChannelMapTraits(), UpdatePixelTrait, SyncCacheViewAuthenticPixels(), _Image::progress_monitor, SetImageProgress(), ThresholdImageTag, and DestroyCacheView().