enhance.c File Reference

#include "magick/studio.h"
#include "magick/artifact.h"
#include "magick/cache.h"
#include "magick/cache-view.h"
#include "magick/color.h"
#include "magick/color-private.h"
#include "magick/colorspace.h"
#include "magick/composite-private.h"
#include "magick/enhance.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/gem.h"
#include "magick/geometry.h"
#include "magick/histogram.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/monitor-private.h"
#include "magick/option.h"
#include "magick/quantum.h"
#include "magick/quantum-private.h"
#include "magick/resample.h"
#include "magick/resample-private.h"
#include "magick/statistic.h"
#include "magick/string_.h"
#include "magick/thread-private.h"
#include "magick/token.h"
#include "magick/xml-tree.h"

Include dependency graph for enhance.c:

Go to the source code of this file.

Defines
#define	ColorDecisionListCorrectImageTag "ColorDecisionList/Image"
#define	ClutImageTag "Clut/Image"
#define	ContrastImageTag "Contrast/Image"
#define	MaxRange(color) ((MagickRealType) ScaleQuantumToMap((Quantum) (color)))
#define	ContrastStretchImageTag "ContrastStretch/Image"
#define	Enhance(weight)
#define	EnhanceImageTag "Enhance/Image"
#define	EqualizeImageTag "Equalize/Image"
#define	GammaCorrectImageTag "GammaCorrect/Image"
#define	HaldClutImageTag "Clut/Image"
#define	LevelImageTag "Level/Image"
#define	LevelValue(x)
#define	LevelizeImageTag "Levelize/Image"
#define	LevelizeValue(x)
#define	LinearStretchImageTag "LinearStretch/Image"
#define	ModulateImageTag "Modulate/Image"
#define	NegateImageTag "Negate/Image"
#define	SigmoidalContrastImageTag "SigmoidalContrast/Image"
Functions
MagickExport MagickBooleanType	AutoGammaImage (Image *image)
MagickExport MagickBooleanType	AutoGammaImageChannel (Image *image, const ChannelType channel)
MagickExport MagickBooleanType	AutoLevelImage (Image *image)
MagickExport MagickBooleanType	AutoLevelImageChannel (Image *image, const ChannelType channel)
MagickExport MagickBooleanType	ColorDecisionListImage (Image image, const char color_correction_collection)
MagickExport MagickBooleanType	ClutImage (Image image, const Image clut_image)
MagickExport MagickBooleanType	ClutImageChannel (Image image, const ChannelType channel, const Image clut_image)
static void	Contrast (const int sign, Quantum red, Quantum green, Quantum *blue)
MagickExport MagickBooleanType	ContrastImage (Image *image, const MagickBooleanType sharpen)
MagickExport MagickBooleanType	ContrastStretchImage (Image image, const char levels)
MagickExport MagickBooleanType	ContrastStretchImageChannel (Image *image, const ChannelType channel, const double black_point, const double white_point)
MagickExport Image *	EnhanceImage (const Image image, ExceptionInfo exception)
MagickExport MagickBooleanType	EqualizeImage (Image *image)
MagickExport MagickBooleanType	EqualizeImageChannel (Image *image, const ChannelType channel)
MagickExport MagickBooleanType	GammaImage (Image image, const char level)
MagickExport MagickBooleanType	GammaImageChannel (Image *image, const ChannelType channel, const double gamma)
static size_t	MagickMin (const size_t x, const size_t y)
MagickExport MagickBooleanType	HaldClutImage (Image image, const Image hald_image)
MagickExport MagickBooleanType	HaldClutImageChannel (Image image, const ChannelType channel, const Image hald_image)
MagickExport MagickBooleanType	LevelImage (Image image, const char levels)
MagickExport MagickBooleanType	LevelizeImage (Image *image, const double black_point, const double white_point, const double gamma)
MagickExport MagickBooleanType	LevelImageChannel (Image *image, const ChannelType channel, const double black_point, const double white_point, const double gamma)
MagickExport MagickBooleanType	LevelizeImageChannel (Image *image, const ChannelType channel, const double black_point, const double white_point, const double gamma)
MagickExport MagickBooleanType	LevelColorsImage (Image image, const MagickPixelPacket black_color, const MagickPixelPacket *white_color, const MagickBooleanType invert)
MagickExport MagickBooleanType	LevelColorsImageChannel (Image image, const ChannelType channel, const MagickPixelPacket black_color, const MagickPixelPacket *white_color, const MagickBooleanType invert)
MagickExport MagickBooleanType	LinearStretchImage (Image *image, const double black_point, const double white_point)
static void	ModulateHSB (const double percent_hue, const double percent_saturation, const double percent_brightness, Quantum red, Quantum green, Quantum *blue)
static void	ModulateHSL (const double percent_hue, const double percent_saturation, const double percent_lightness, Quantum red, Quantum green, Quantum *blue)
static void	ModulateHWB (const double percent_hue, const double percent_whiteness, const double percent_blackness, Quantum red, Quantum green, Quantum *blue)
MagickExport MagickBooleanType	ModulateImage (Image image, const char modulate)
MagickExport MagickBooleanType	NegateImage (Image *image, const MagickBooleanType grayscale)
MagickExport MagickBooleanType	NegateImageChannel (Image *image, const ChannelType channel, const MagickBooleanType grayscale)
MagickExport MagickBooleanType	NormalizeImage (Image *image)
MagickExport MagickBooleanType	NormalizeImageChannel (Image *image, const ChannelType channel)
MagickExport MagickBooleanType	SigmoidalContrastImage (Image image, const MagickBooleanType sharpen, const char levels)
MagickExport MagickBooleanType	SigmoidalContrastImageChannel (Image *image, const ChannelType channel, const MagickBooleanType sharpen, const double contrast, const double midpoint)

Define Documentation

#define ClutImageTag "Clut/Image"

Referenced by ClutImageChannel().

#define ColorDecisionListCorrectImageTag "ColorDecisionList/Image"

Referenced by ColorDecisionListImage().

#define ContrastImageTag "Contrast/Image"

Referenced by ContrastImage().

#define ContrastStretchImageTag "ContrastStretch/Image"

Referenced by ContrastStretchImageChannel().

#define Enhance ( weight )

Value:

mean=((MagickRealType) r->red+pixel.red)/2; \
  distance=(MagickRealType) r->red-(MagickRealType) pixel.red; \
  distance_squared=QuantumScale*(2.0*((MagickRealType) QuantumRange+1.0)+ \
     mean)*distance*distance; \
  mean=((MagickRealType) r->green+pixel.green)/2; \
  distance=(MagickRealType) r->green-(MagickRealType) pixel.green; \
  distance_squared+=4.0*distance*distance; \
  mean=((MagickRealType) r->blue+pixel.blue)/2; \
  distance=(MagickRealType) r->blue-(MagickRealType) pixel.blue; \
  distance_squared+=QuantumScale*(3.0*((MagickRealType) \
    QuantumRange+1.0)-1.0-mean)*distance*distance; \
  mean=((MagickRealType) r->opacity+pixel.opacity)/2; \
  distance=(MagickRealType) r->opacity-(MagickRealType) pixel.opacity; \
  distance_squared+=QuantumScale*(3.0*((MagickRealType) \
    QuantumRange+1.0)-1.0-mean)*distance*distance; \
  if (distance_squared < ((MagickRealType) QuantumRange*(MagickRealType) \
      QuantumRange/25.0f)) \
    { \
      aggregate.red+=(weight)*r->red; \
      aggregate.green+=(weight)*r->green; \
      aggregate.blue+=(weight)*r->blue; \
      aggregate.opacity+=(weight)*r->opacity; \
      total_weight+=(weight); \
    } \
  r++;

Referenced by EnhanceImage().

#define EnhanceImageTag "Enhance/Image"

Referenced by EnhanceImage().

#define EqualizeImageTag "Equalize/Image"

Referenced by EqualizeImageChannel().

#define GammaCorrectImageTag "GammaCorrect/Image"

Referenced by GammaImageChannel().

#define HaldClutImageTag "Clut/Image"

Referenced by HaldClutImageChannel().

#define LevelImageTag "Level/Image"

Referenced by LevelImageChannel().

#define LevelizeImageTag "Levelize/Image"

Referenced by LevelizeImageChannel().

#define LevelizeValue ( x )

Value:

(RoundToQuantum(((MagickRealType) \
  pow((double)(QuantumScale*(x)),1.0/gamma))*(white_point-black_point)+ \
  black_point))

Referenced by LevelizeImageChannel().

#define LevelValue ( x )

Value:

(RoundToQuantum((MagickRealType) QuantumRange* \
  pow(((double) (x)-black_point)/(white_point-black_point),1.0/gamma)))

Referenced by LevelImageChannel().

#define LinearStretchImageTag "LinearStretch/Image"

#define MaxRange ( color ) ((MagickRealType) ScaleQuantumToMap((Quantum) (color)))

Referenced by ContrastStretchImageChannel().

#define ModulateImageTag "Modulate/Image"

Referenced by ModulateImage().

#define NegateImageTag "Negate/Image"

Referenced by NegateImageChannel().

#define SigmoidalContrastImageTag "SigmoidalContrast/Image"

Referenced by SigmoidalContrastImageChannel().

Function Documentation

MagickExport MagickBooleanType AutoGammaImage ( Image * image )

Definition at line 103 of file enhance.c.

References AutoGammaImageChannel(), and DefaultChannels.

MagickExport MagickBooleanType AutoGammaImageChannel	(	Image *	image,
		const ChannelType	channel
	)

Definition at line 108 of file enhance.c.

References BlueChannel, CMYKColorspace, _Image::colorspace, _Image::exception, GetImageChannelMean(), GreenChannel, IndexChannel, LevelImageChannel(), MagickFalse, MagickTrue, _Image::matte, OpacityChannel, QuantumRange, QuantumScale, RedChannel, and SyncChannels.

Referenced by AutoGammaImage().

MagickExport MagickBooleanType AutoLevelImage ( Image * image )

Definition at line 210 of file enhance.c.

References AutoLevelImageChannel(), and DefaultChannels.

MagickExport MagickBooleanType AutoLevelImageChannel	(	Image *	image,
		const ChannelType	channel
	)

Definition at line 215 of file enhance.c.

References MinMaxStretchImage().

Referenced by AutoLevelImage().

MagickExport MagickBooleanType ClutImage	(	Image *	image,
		const Image *	clut_image
	)

Definition at line 607 of file enhance.c.

References ClutImageChannel(), and DefaultChannels.

MagickExport MagickBooleanType ClutImageChannel	(	Image *	image,
		const ChannelType	channel,
		const Image *	clut_image
	)

Definition at line 612 of file enhance.c.

References AcquireCacheView(), AcquireResampleFilterThreadSet(), ActivateAlphaChannel, _MagickPixelPacket::blue, BlueChannel, ClutImageTag, CMYKColorspace, _Image::colorspace, _Image::columns, _Image::debug, DestroyCacheView(), DestroyResampleFilterThreadSet(), DirectClass, _Image::exception, _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetMagickModule, GetMagickPixelPacket(), GetOpenMPThreadId(), _MagickPixelPacket::green, GreenChannel, _MagickPixelPacket::index, IndexChannel, IntegerInterpolatePixel, _Image::interpolate, LogMagickEvent(), MagickFalse, MagickPixelIntensityToQuantum(), MagickSignature, MagickTrue, _Image::matte, _MagickPixelPacket::opacity, OpacityChannel, PixelIntensity(), _Image::progress_monitor, QuantumRange, QuantumScale, _MagickPixelPacket::red, RedChannel, ResamplePixelColor(), RoundToQuantum(), _Image::rows, SetImageAlphaChannel(), SetImageProgress(), SetImageStorageClass(), _Image::signature, SyncCacheViewAuthenticPixels(), and TraceEvent.

Referenced by ClutImage().

MagickExport MagickBooleanType ColorDecisionListImage	(	Image *	image,
		const char *	color_correction_collection
	)

Definition at line 267 of file enhance.c.

References AcquireCacheView(), AcquireQuantumMemory(), _PixelPacket::blue, ColorDecisionListCorrectImageTag, _Image::colormap, _Image::colors, _Image::columns, _Image::debug, DestroyCacheView(), DestroyXMLTree(), _Image::exception, _Image::filename, GetCacheViewAuthenticPixels(), GetMagickModule, GetMagickToken(), GetXMLTreeChild(), GetXMLTreeContent(), _PixelPacket::green, LogMagickEvent(), MagickFalse, MagickSignature, MagickTrue, MaxMap, MaxTextExtent, NewXMLTree(), _Image::progress_monitor, PseudoClass, _PixelPacket::red, RelinquishMagickMemory(), ResourceLimitError, RoundToQuantum(), _Image::rows, ScaleMapToQuantum(), ScaleQuantumToMap(), SetImageProgress(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), ThrowBinaryException, TraceEvent, and TransformEvent.

static void Contrast	(	const int	sign,
		Quantum *	red,
		Quantum *	green,
		Quantum *	blue
	)			`[static]`

Definition at line 818 of file enhance.c.

References ConvertHSBToRGB(), ConvertRGBToHSB(), and MagickPI.

Referenced by ContrastImage().

MagickExport MagickBooleanType ContrastImage	(	Image *	image,
		const MagickBooleanType	sharpen
	)

Definition at line 844 of file enhance.c.

References AcquireCacheView(), _PixelPacket::blue, _Image::colormap, _Image::colors, _Image::columns, Contrast(), ContrastImageTag, _Image::debug, DestroyCacheView(), _Image::exception, _Image::filename, GetCacheViewAuthenticPixels(), GetMagickModule, _PixelPacket::green, LogMagickEvent(), MagickFalse, MagickSignature, MagickTrue, _Image::progress_monitor, PseudoClass, _PixelPacket::red, _Image::rows, SetImageProgress(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), and TraceEvent.

Referenced by PreviewImage(), and SepiaToneImage().

MagickExport MagickBooleanType ContrastStretchImage	(	Image *	image,
		const char *	levels
	)

Definition at line 973 of file enhance.c.

References _Image::columns, ContrastStretchImageChannel(), DefaultChannels, MagickFalse, ParseGeometry(), PercentValue, QuantumRange, _GeometryInfo::rho, _Image::rows, _GeometryInfo::sigma, and SigmaValue.

MagickExport MagickBooleanType ContrastStretchImageChannel	(	Image *	image,
		const ChannelType	channel,
		const double	black_point,
		const double	white_point
	)

Definition at line 1011 of file enhance.c.

References AcquireCacheView(), AcquireQuantumMemory(), _PixelPacket::blue, _MagickPixelPacket::blue, BlueChannel, CMYKColorspace, _Image::colormap, _Image::colors, _Image::colorspace, _Image::columns, ContrastStretchImageTag, _Image::debug, DefaultChannels, DestroyCacheView(), DirectClass, _Image::exception, _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetCacheViewVirtualPixels(), GetMagickModule, _PixelPacket::green, _MagickPixelPacket::green, GreenChannel, _MagickPixelPacket::index, IndexChannel, LogMagickEvent(), MagickFalse, MagickSignature, MagickTrue, MaxMap, MaxRange, _PixelPacket::opacity, _MagickPixelPacket::opacity, OpacityChannel, PixelIntensityToQuantum(), _Image::progress_monitor, PseudoClass, QuantumRange, _PixelPacket::red, _MagickPixelPacket::red, RedChannel, RelinquishMagickMemory(), ResetMagickMemory(), ResourceLimitError, RoundToQuantum(), _Image::rows, ScaleMapToQuantum(), ScaleQuantumToMap(), SetImageProgress(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), ThrowBinaryException, and TraceEvent.

Referenced by ContrastStretchImage(), and NormalizeImageChannel().

MagickExport Image* EnhanceImage	(	const Image *	image,
		ExceptionInfo *	exception
	)

MagickExport MagickBooleanType EqualizeImage ( Image * image )

Definition at line 1640 of file enhance.c.

References DefaultChannels, and EqualizeImageChannel().

Referenced by EmbossImage().

MagickExport MagickBooleanType EqualizeImageChannel	(	Image *	image,
		const ChannelType	channel
	)

Definition at line 1645 of file enhance.c.

References AcquireCacheView(), AcquireQuantumMemory(), _PixelPacket::blue, _MagickPixelPacket::blue, BlueChannel, CMYKColorspace, _Image::colormap, _Image::colors, _Image::colorspace, _Image::columns, _Image::debug, DestroyCacheView(), EqualizeImageTag, _Image::exception, _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetMagickModule, GetVirtualIndexQueue(), GetVirtualPixels(), _PixelPacket::green, _MagickPixelPacket::green, GreenChannel, _MagickPixelPacket::index, IndexChannel, LogMagickEvent(), MagickFalse, MagickSignature, MagickTrue, MaxMap, _PixelPacket::opacity, _MagickPixelPacket::opacity, OpacityChannel, _Image::progress_monitor, PseudoClass, _PixelPacket::red, _MagickPixelPacket::red, RedChannel, RelinquishMagickMemory(), ResetMagickMemory(), ResourceLimitError, RoundToQuantum(), _Image::rows, ScaleMapToQuantum(), ScaleQuantumToMap(), SetImageProgress(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), ThrowBinaryException, and TraceEvent.

Referenced by EqualizeImage().

MagickExport MagickBooleanType GammaImage	(	Image *	image,
		const char *	level
	)

Definition at line 1912 of file enhance.c.

References _MagickPixelPacket::blue, BlueChannel, _Image::debug, _Image::filename, GammaImageChannel(), GetMagickModule, _MagickPixelPacket::green, GreenChannel, LogMagickEvent(), MagickFalse, MagickSignature, MagickTrue, ParseGeometry(), _MagickPixelPacket::red, RedChannel, _GeometryInfo::rho, _GeometryInfo::sigma, SigmaValue, _Image::signature, TraceEvent, _GeometryInfo::xi, and XiValue.

MagickExport MagickBooleanType GammaImageChannel	(	Image *	image,
		const ChannelType	channel,
		const double	gamma
	)

Definition at line 1952 of file enhance.c.

References AcquireCacheView(), AcquireQuantumMemory(), _PixelPacket::blue, BlueChannel, CMYKColorspace, _Image::colormap, _Image::colors, _Image::colorspace, _Image::columns, _Image::debug, DefaultChannels, DestroyCacheView(), _Image::exception, _Image::filename, _Image::gamma, GammaCorrectImageTag, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetMagickModule, _PixelPacket::green, GreenChannel, IndexChannel, LogMagickEvent(), MagickFalse, MagickSignature, MagickTrue, _Image::matte, MaxMap, _PixelPacket::opacity, OpacityChannel, _Image::progress_monitor, PseudoClass, QuantumRange, _PixelPacket::red, RedChannel, RelinquishMagickMemory(), ResetMagickMemory(), ResourceLimitError, RoundToQuantum(), _Image::rows, ScaleMapToQuantum(), ScaleQuantumToMap(), SetImageProgress(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), ThrowBinaryException, and TraceEvent.

Referenced by GammaImage(), and PreviewImage().

MagickExport MagickBooleanType HaldClutImage	(	Image *	image,
		const Image *	hald_image
	)

Definition at line 2152 of file enhance.c.

References DefaultChannels, and HaldClutImageChannel().

MagickExport MagickBooleanType HaldClutImageChannel	(	Image *	image,
		const ChannelType	channel,
		const Image *	hald_image
	)

Definition at line 2158 of file enhance.c.

References AcquireCacheView(), AcquireResampleFilterThreadSet(), _MagickPixelPacket::blue, BlueChannel, CMYKColorspace, _Image::colorspace, _Image::columns, _Image::debug, DestroyCacheView(), DestroyResampleFilterThreadSet(), DirectClass, _Image::exception, _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetMagickModule, GetMagickPixelPacket(), GetOpenMPThreadId(), _MagickPixelPacket::green, GreenChannel, HaldClutImageTag, _MagickPixelPacket::index, IndexChannel, LogMagickEvent(), MagickFalse, MagickMin(), MagickPixelCompositeAreaBlend(), MagickSignature, MagickTrue, _Image::matte, _MagickPixelPacket::opacity, OpacityChannel, OpaqueAlphaChannel, _Image::progress_monitor, QuantumScale, _MagickPixelPacket::red, RedChannel, ResamplePixelColor(), RoundToQuantum(), _Image::rows, SetImageAlphaChannel(), SetImageProgress(), SetImageStorageClass(), _Image::signature, SyncCacheViewAuthenticPixels(), and TraceEvent.

Referenced by HaldClutImage().

MagickExport MagickBooleanType LevelColorsImage	(	Image *	image,
		const MagickPixelPacket *	black_color,
		const MagickPixelPacket *	white_color,
		const MagickBooleanType	invert
	)

Definition at line 2777 of file enhance.c.

References DefaultChannels, and LevelColorsImageChannel().

Referenced by SetImageAlphaChannel().

MagickExport MagickBooleanType LevelColorsImageChannel	(	Image *	image,
		const ChannelType	channel,
		const MagickPixelPacket *	black_color,
		const MagickPixelPacket *	white_color,
		const MagickBooleanType	invert
	)

Definition at line 2789 of file enhance.c.

References _MagickPixelPacket::blue, BlueChannel, CMYKColorspace, _Image::colorspace, _Image::debug, _Image::filename, GetMagickModule, _MagickPixelPacket::green, GreenChannel, _MagickPixelPacket::index, IndexChannel, LevelImageChannel(), LevelizeImageChannel(), LogMagickEvent(), MagickFalse, MagickSignature, MagickTrue, _Image::matte, _MagickPixelPacket::opacity, OpacityChannel, _MagickPixelPacket::red, RedChannel, _Image::signature, and TraceEvent.

Referenced by LevelColorsImage(), and LevelImageColors().

MagickExport MagickBooleanType LevelImage	(	Image *	image,
		const char *	levels
	)

Definition at line 2364 of file enhance.c.

References AspectValue, _Image::columns, DefaultChannels, LevelImageChannel(), LevelizeImage(), MagickFalse, ParseGeometry(), PercentValue, QuantumRange, _GeometryInfo::rho, _Image::rows, _GeometryInfo::sigma, SigmaValue, _GeometryInfo::xi, and XiValue.

Referenced by AdaptiveBlurImageChannel(), and AdaptiveSharpenImageChannel().

MagickExport MagickBooleanType LevelImageChannel	(	Image *	image,
		const ChannelType	channel,
		const double	black_point,
		const double	white_point,
		const double	gamma
	)

Definition at line 2462 of file enhance.c.

References AcquireCacheView(), _PixelPacket::blue, BlueChannel, CMYKColorspace, _Image::colormap, _Image::colors, _Image::colorspace, _Image::columns, _Image::debug, DestroyCacheView(), _Image::exception, _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetMagickModule, _PixelPacket::green, GreenChannel, IndexChannel, LevelImageTag, LevelValue, LogMagickEvent(), MagickFalse, MagickSignature, MagickTrue, _Image::matte, _PixelPacket::opacity, OpacityChannel, _Image::progress_monitor, PseudoClass, _PixelPacket::red, RedChannel, _Image::rows, SetImageProgress(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), and TraceEvent.

Referenced by AutoGammaImageChannel(), LevelColorsImageChannel(), LevelImage(), LinearStretchImage(), and MinMaxStretchImage().

MagickExport MagickBooleanType LevelizeImage	(	Image *	image,
		const double	black_point,
		const double	white_point,
		const double	gamma
	)

Definition at line 2451 of file enhance.c.

References DefaultChannels, and LevelizeImageChannel().

Referenced by LevelImage().

MagickExport MagickBooleanType LevelizeImageChannel	(	Image *	image,
		const ChannelType	channel,
		const double	black_point,
		const double	white_point,
		const double	gamma
	)

MagickExport MagickBooleanType LinearStretchImage	(	Image *	image,
		const double	black_point,
		const double	white_point
	)

Definition at line 2875 of file enhance.c.

References AcquireQuantumMemory(), _Image::columns, DefaultChannels, _Image::exception, _Image::filename, GetVirtualPixels(), LevelImageChannel(), MagickSignature, MaxMap, PixelIntensityToQuantum(), RelinquishMagickMemory(), ResetMagickMemory(), ResourceLimitError, _Image::rows, ScaleQuantumToMap(), _Image::signature, and ThrowBinaryException.

static size_t MagickMin	(	const size_t	x,
		const size_t	y
	)			`[inline, static]`

Definition at line 2145 of file enhance.c.

Referenced by HaldClutImageChannel().

static void ModulateHSB	(	const double	percent_hue,
		const double	percent_saturation,
		const double	percent_brightness,
		Quantum *	red,
		Quantum *	green,
		Quantum *	blue
	)			`[static]`

Definition at line 2984 of file enhance.c.

References ConvertHSBToRGB(), and ConvertRGBToHSB().

Referenced by ModulateImage().

static void ModulateHSL	(	const double	percent_hue,
		const double	percent_saturation,
		const double	percent_lightness,
		Quantum *	red,
		Quantum *	green,
		Quantum *	blue
	)			`[static]`

Definition at line 3010 of file enhance.c.

References ConvertHSLToRGB(), and ConvertRGBToHSL().

Referenced by ModulateImage().

static void ModulateHWB	(	const double	percent_hue,
		const double	percent_whiteness,
		const double	percent_blackness,
		Quantum *	red,
		Quantum *	green,
		Quantum *	blue
	)			`[static]`

Definition at line 3036 of file enhance.c.

References ConvertHWBToRGB(), and ConvertRGBToHWB().

Referenced by ModulateImage().

MagickExport MagickBooleanType ModulateImage	(	Image *	image,
		const char *	modulate
	)

Definition at line 3060 of file enhance.c.

References AcquireCacheView(), _PixelPacket::blue, _Image::colormap, _Image::colors, _Image::columns, _Image::debug, DestroyCacheView(), _Image::exception, _Image::filename, GetCacheViewAuthenticPixels(), GetImageArtifact(), GetMagickModule, _PixelPacket::green, HSBColorspace, HSLColorspace, HWBColorspace, LogMagickEvent(), MagickColorspaceOptions, MagickFalse, MagickSignature, MagickTrue, ModulateHSB(), ModulateHSL(), ModulateHWB(), ModulateImageTag, ParseGeometry(), ParseMagickOption(), _Image::progress_monitor, PseudoClass, _PixelPacket::red, _GeometryInfo::rho, _Image::rows, SetImageProgress(), _GeometryInfo::sigma, SigmaValue, _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), TraceEvent, UndefinedColorspace, _GeometryInfo::xi, and XiValue.

Referenced by PreviewImage().

MagickExport MagickBooleanType NegateImage	(	Image *	image,
		const MagickBooleanType	grayscale
	)

Definition at line 3256 of file enhance.c.

References DefaultChannels, and NegateImageChannel().

Referenced by CharcoalImage(), ClipImagePath(), DrawClipPath(), and SketchImage().

MagickExport MagickBooleanType NegateImageChannel	(	Image *	image,
		const ChannelType	channel,
		const MagickBooleanType	grayscale
	)

MagickExport MagickBooleanType NormalizeImage ( Image * image )

Definition at line 3481 of file enhance.c.

References DefaultChannels, and NormalizeImageChannel().

Referenced by CharcoalImage(), SepiaToneImage(), and SketchImage().

MagickExport MagickBooleanType NormalizeImageChannel	(	Image *	image,
		const ChannelType	channel
	)

Definition at line 3490 of file enhance.c.

References _Image::columns, ContrastStretchImageChannel(), and _Image::rows.

Referenced by NormalizeImage().

MagickExport MagickBooleanType SigmoidalContrastImage	(	Image *	image,
		const MagickBooleanType	sharpen,
		const char *	levels
	)

Definition at line 3544 of file enhance.c.

References DefaultChannels, ParseGeometry(), PercentValue, QuantumRange, _GeometryInfo::rho, _GeometryInfo::sigma, SigmaValue, and SigmoidalContrastImageChannel().

MagickExport MagickBooleanType SigmoidalContrastImageChannel	(	Image *	image,
		const ChannelType	channel,
		const MagickBooleanType	sharpen,
		const double	contrast,
		const double	midpoint
	)

Definition at line 3566 of file enhance.c.

References AcquireCacheView(), AcquireQuantumMemory(), _PixelPacket::blue, BlueChannel, CMYKColorspace, _Image::colormap, _Image::colors, _Image::colorspace, _Image::columns, _Image::debug, DestroyCacheView(), _Image::exception, _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetMagickModule, _PixelPacket::green, GreenChannel, IndexChannel, LogMagickEvent(), MagickFalse, MagickSignature, MagickTrue, MaxMap, _PixelPacket::opacity, OpacityChannel, _Image::progress_monitor, PseudoClass, QuantumRange, QuantumScale, _PixelPacket::red, RedChannel, RelinquishMagickMemory(), ResetMagickMemory(), ResourceLimitError, RoundToQuantum(), _Image::rows, ScaleMapToQuantum(), ScaleQuantumToMap(), SetImageProgress(), SigmoidalContrastImageTag, _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), ThrowBinaryException, and TraceEvent.

Referenced by SigmoidalContrastImage().

enhance.c File Reference

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Functions

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Function Documentation