enhance.c File Reference

#include "MagickCore/studio.h"
#include "MagickCore/accelerate-private.h"
#include "MagickCore/artifact.h"
#include "MagickCore/attribute.h"
#include "MagickCore/cache.h"
#include "MagickCore/cache-private.h"
#include "MagickCore/cache-view.h"
#include "MagickCore/channel.h"
#include "MagickCore/color.h"
#include "MagickCore/color-private.h"
#include "MagickCore/colorspace.h"
#include "MagickCore/colorspace-private.h"
#include "MagickCore/composite-private.h"
#include "MagickCore/enhance.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/fx.h"
#include "MagickCore/gem.h"
#include "MagickCore/gem-private.h"
#include "MagickCore/geometry.h"
#include "MagickCore/histogram.h"
#include "MagickCore/image.h"
#include "MagickCore/image-private.h"
#include "MagickCore/memory_.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/option.h"
#include "MagickCore/pixel.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/quantum.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/resample.h"
#include "MagickCore/resample-private.h"
#include "MagickCore/resource_.h"
#include "MagickCore/statistic.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/xml-tree.h"
#include "MagickCore/xml-tree-private.h"

Include dependency graph for enhance.c:

Go to the source code of this file.

Macros
#define	BrightnessContastImageTag   "BrightnessContast/Image"
#define	ClutImageTag   "Clut/Image"
#define	ColorDecisionListCorrectImageTag   "ColorDecisionList/Image"
#define	ContrastImageTag   "Contrast/Image"
#define	MaxRange(color)   ((double) ScaleQuantumToMap((Quantum) (color)))
#define	ContrastStretchImageTag   "ContrastStretch/Image"
#define	EnhanceImageTag   "Enhance/Image"
#define	EnhancePixel(weight)
#define	EqualizeImageTag   "Equalize/Image"
#define	GammaCorrectImageTag   "GammaCorrect/Image"
#define	GrayscaleImageTag   "Grayscale/Image"
#define	HaldClutImageTag   "Clut/Image"
#define	LevelImageTag   "Level/Image"
#define	LevelizeImageTag   "Levelize/Image"
#define	LevelizeValue(x)
#define	LinearStretchImageTag   "LinearStretch/Image"
#define	ModulateImageTag   "Modulate/Image"
#define	NegateImageTag   "Negate/Image"
#define	Sigmoidal(a, b, x)   ( 1.0/(1.0+exp((a)*((b)-(x)))) )
#define	ScaledSigmoidal(a, b, x)
#define	SigmoidalContrastImageTag   "SigmoidalContrast/Image"
#define	ScaledSig(x)
#define	InverseScaledSig(x)

Functions
MagickExport MagickBooleanType	AutoGammaImage (Image *image, ExceptionInfo *exception)
MagickExport MagickBooleanType	AutoLevelImage (Image *image, ExceptionInfo *exception)
MagickExport MagickBooleanType	BrightnessContrastImage (Image *image, const double brightness, const double contrast, ExceptionInfo *exception)
MagickExport MagickBooleanType	ClutImage (Image *image, const Image *clut_image, const PixelInterpolateMethod method, ExceptionInfo *exception)
MagickExport MagickBooleanType	ColorDecisionListImage (Image *image, const char *color_correction_collection, ExceptionInfo *exception)
static void	Contrast (const int sign, double *red, double *green, double *blue)
MagickExport MagickBooleanType	ContrastImage (Image *image, const MagickBooleanType sharpen, ExceptionInfo *exception)
MagickExport MagickBooleanType	ContrastStretchImage (Image *image, const double black_point, const double white_point, ExceptionInfo *exception)
MagickExport Image *	EnhanceImage (const Image *image, ExceptionInfo *exception)
MagickExport MagickBooleanType	EqualizeImage (Image *image, ExceptionInfo *exception)
static double	gamma_pow (const double value, const double gamma)
MagickExport MagickBooleanType	GammaImage (Image *image, const double gamma, ExceptionInfo *exception)
MagickExport MagickBooleanType	GrayscaleImage (Image *image, const PixelIntensityMethod method, ExceptionInfo *exception)
MagickExport MagickBooleanType	HaldClutImage (Image *image, const Image *hald_image, ExceptionInfo *exception)
static double	LevelPixel (const double black_point, const double white_point, const double gamma, const double pixel)
MagickExport MagickBooleanType	LevelImage (Image *image, const double black_point, const double white_point, const double gamma, ExceptionInfo *exception)
MagickExport MagickBooleanType	LevelizeImage (Image *image, const double black_point, const double white_point, const double gamma, ExceptionInfo *exception)
MagickExport MagickBooleanType	LevelImageColors (Image *image, const PixelInfo *black_color, const PixelInfo *white_color, const MagickBooleanType invert, ExceptionInfo *exception)
MagickExport MagickBooleanType	LinearStretchImage (Image *image, const double black_point, const double white_point, ExceptionInfo *exception)
static void	ModulateHCL (const double percent_hue, const double percent_chroma, const double percent_luma, double *red, double *green, double *blue)
static void	ModulateHCLp (const double percent_hue, const double percent_chroma, const double percent_luma, double *red, double *green, double *blue)
static void	ModulateHSB (const double percent_hue, const double percent_saturation, const double percent_brightness, double *red, double *green, double *blue)
static void	ModulateHSI (const double percent_hue, const double percent_saturation, const double percent_intensity, double *red, double *green, double *blue)
static void	ModulateHSL (const double percent_hue, const double percent_saturation, const double percent_lightness, double *red, double *green, double *blue)
static void	ModulateHSV (const double percent_hue, const double percent_saturation, const double percent_value, double *red, double *green, double *blue)
static void	ModulateHWB (const double percent_hue, const double percent_whiteness, const double percent_blackness, double *red, double *green, double *blue)
static void	ModulateLCHab (const double percent_luma, const double percent_chroma, const double percent_hue, double *red, double *green, double *blue)
static void	ModulateLCHuv (const double percent_luma, const double percent_chroma, const double percent_hue, double *red, double *green, double *blue)
MagickExport MagickBooleanType	ModulateImage (Image *image, const char *modulate, ExceptionInfo *exception)
MagickExport MagickBooleanType	NegateImage (Image *image, const MagickBooleanType grayscale, ExceptionInfo *exception)
MagickExport MagickBooleanType	NormalizeImage (Image *image, ExceptionInfo *exception)
static double	InverseScaledSigmoidal (const double a, const double b, const double x)
MagickExport MagickBooleanType	SigmoidalContrastImage (Image *image, const MagickBooleanType sharpen, const double contrast, const double midpoint, ExceptionInfo *exception)

Macro Definition Documentation

BrightnessContastImageTag

#define BrightnessContastImageTag   "BrightnessContast/Image"

ClutImageTag

#define ClutImageTag   "Clut/Image"

Referenced by ClutImage().

ColorDecisionListCorrectImageTag

#define ColorDecisionListCorrectImageTag   "ColorDecisionList/Image"

Referenced by ColorDecisionListImage().

ContrastImageTag

#define ContrastImageTag   "Contrast/Image"

Referenced by ContrastImage().

ContrastStretchImageTag

#define ContrastStretchImageTag   "ContrastStretch/Image"

Referenced by ContrastStretchImage().

EnhanceImageTag

#define EnhanceImageTag   "Enhance/Image"

Referenced by EnhanceImage().

EnhancePixel

#define EnhancePixel

(

weight

)

Value:

mean=QuantumScale*((double) GetPixelRed(image,r)+pixel.red)/2.0; \
  distance=QuantumScale*((double) GetPixelRed(image,r)-pixel.red); \
  distance_squared=(4.0+mean)*distance*distance; \
  mean=QuantumScale*((double) GetPixelGreen(image,r)+pixel.green)/2.0; \
  distance=QuantumScale*((double) GetPixelGreen(image,r)-pixel.green); \
  distance_squared+=(7.0-mean)*distance*distance; \
  mean=QuantumScale*((double) GetPixelBlue(image,r)+pixel.blue)/2.0; \
  distance=QuantumScale*((double) GetPixelBlue(image,r)-pixel.blue); \
  distance_squared+=(5.0-mean)*distance*distance; \
  mean=QuantumScale*((double) GetPixelBlack(image,r)+pixel.black)/2.0; \
  distance=QuantumScale*((double) GetPixelBlack(image,r)-pixel.black); \
  distance_squared+=(5.0-mean)*distance*distance; \
  mean=QuantumScale*((double) GetPixelAlpha(image,r)+pixel.alpha)/2.0; \
  distance=QuantumScale*((double) GetPixelAlpha(image,r)-pixel.alpha); \
  distance_squared+=(5.0-mean)*distance*distance; \
  if (distance_squared < 0.069) \
    { \
      aggregate.red+=(weight)*GetPixelRed(image,r); \
      aggregate.green+=(weight)*GetPixelGreen(image,r); \
      aggregate.blue+=(weight)*GetPixelBlue(image,r); \
      aggregate.black+=(weight)*GetPixelBlack(image,r); \
      aggregate.alpha+=(weight)*GetPixelAlpha(image,r); \
      total_weight+=(weight); \
    } \
  r+=GetPixelChannels(image);

Referenced by EnhanceImage().

EqualizeImageTag

#define EqualizeImageTag   "Equalize/Image"

Referenced by EqualizeImage().

GammaCorrectImageTag

#define GammaCorrectImageTag   "GammaCorrect/Image"

Referenced by GammaImage().

GrayscaleImageTag

#define GrayscaleImageTag   "Grayscale/Image"

Referenced by GrayscaleImage().

HaldClutImageTag

#define HaldClutImageTag   "Clut/Image"

Referenced by HaldClutImage().

InverseScaledSig

#define InverseScaledSig

(

x

)

Value:

( ClampToQuantum(QuantumRange* \
  InverseScaledSigmoidal(contrast,QuantumScale*midpoint,QuantumScale*(x))) )

Referenced by SigmoidalContrastImage().

LevelImageTag

#define LevelImageTag   "Level/Image"

Referenced by LevelImage().

LevelizeImageTag

#define LevelizeImageTag   "Levelize/Image"

Referenced by LevelizeImage().

LevelizeValue

#define LevelizeValue

(

x

)

Value:

ClampToQuantum(((MagickRealType) gamma_pow((double) \
  (QuantumScale*(x)),gamma))*(white_point-black_point)+black_point)

Referenced by LevelizeImage().

LinearStretchImageTag

#define LinearStretchImageTag   "LinearStretch/Image"

MaxRange

#define MaxRange

(

color

)

((double) ScaleQuantumToMap((Quantum) (color)))

Referenced by ContrastStretchImage().

ModulateImageTag

#define ModulateImageTag   "Modulate/Image"

Referenced by ModulateImage().

NegateImageTag

#define NegateImageTag   "Negate/Image"

Referenced by NegateImage().

ScaledSig

#define ScaledSig

(

x

)

Value:

( ClampToQuantum(QuantumRange* \
  ScaledSigmoidal(contrast,QuantumScale*midpoint,QuantumScale*(x))) )

Referenced by SigmoidalContrastImage().

ScaledSigmoidal

#define ScaledSigmoidal	(		a,
			b,
			x
	)

Value:

(                    \
  (Sigmoidal((a),(b),(x))-Sigmoidal((a),(b),0.0)) / \
  (Sigmoidal((a),(b),1.0)-Sigmoidal((a),(b),0.0)) )

Definition at line 3716 of file enhance.c.

Sigmoidal

#define Sigmoidal	(		a,
			b,
			x
	)		( 1.0/(1.0+exp((a)*((b)-(x)))) )

Definition at line 3697 of file enhance.c.

Referenced by InverseScaledSigmoidal().

SigmoidalContrastImageTag

#define SigmoidalContrastImageTag   "SigmoidalContrast/Image"

Referenced by SigmoidalContrastImage().

Function Documentation

AutoGammaImage()

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

Definition at line 111 of file enhance.c.

References _Image::channel_mask, DefaultChannels, GetImageMean(), GetPixelChannelChannel(), GetPixelChannels(), GetPixelChannelTraits(), LevelImage(), MagickFalse, MagickTrue, QuantumRange, QuantumScale, SetImageChannelMask(), and UpdatePixelTrait.

AutoLevelImage()

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

Definition at line 185 of file enhance.c.

References MinMaxStretchImage().

Referenced by AdaptiveBlurImage(), and AdaptiveSharpenImage().

BrightnessContrastImage()

MagickExport MagickBooleanType BrightnessContrastImage	(	Image *	image,
		const double	brightness,
		const double	contrast,
		ExceptionInfo *	exception
	)

Definition at line 222 of file enhance.c.

References _Image::debug, _Image::filename, FunctionImage(), GetMagickModule, LogMagickEvent(), MagickCoreSignature, MagickFalse, MagickPI, PolynomialFunction, _Image::signature, and TraceEvent.

ClutImage()

MagickExport MagickBooleanType ClutImage	(	Image *	image,
		const Image *	clut_image,
		const PixelInterpolateMethod	method,
		ExceptionInfo *	exception
	)

Definition at line 299 of file enhance.c.

References AcquireAuthenticCacheView(), AcquireQuantumMemory(), AcquireVirtualCacheView(), ActivateAlphaChannel, _PixelInfo::alpha, _Image::alpha_trait, AlphaPixelChannel, _PixelInfo::black, BlackPixelChannel, _PixelInfo::blue, BluePixelChannel, ClampToQuantum(), ClutImageTag, _Image::colorspace, _Image::columns, _Image::debug, DestroyCacheView(), DirectClass, _Image::filename, GetCacheViewAuthenticPixels(), GetMagickModule, GetPixelAlphaTraits(), GetPixelChannels(), GetPixelChannelTraits(), GetPixelInfo(), GetPixelInfoPixel(), GetPixelWriteMask(), _PixelInfo::green, GreenPixelChannel, IntegerInterpolatePixel, _Image::interpolate, InterpolatePixelInfo(), IsGrayColorspace(), LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickTrue, MaxMap, _Image::progress_monitor, QuantumRange, _PixelInfo::red, RedPixelChannel, RelinquishMagickMemory(), ResourceLimitError, _Image::rows, SetImageAlphaChannel(), SetImageColorspace(), SetImageProgress(), SetImageStorageClass(), SetPixelViaPixelInfo(), _Image::signature, sRGBColorspace, SyncCacheViewAuthenticPixels(), ThrowBinaryException, TraceEvent, UndefinedPixelTrait, and UpdatePixelTrait.

ColorDecisionListImage()

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

Definition at line 482 of file enhance.c.

References AcquireAuthenticCacheView(), AcquireQuantumMemory(), _PixelInfo::blue, ClampToQuantum(), ColorDecisionListCorrectImageTag, _Image::colormap, _Image::colors, _Image::columns, _Image::debug, DestroyCacheView(), DestroyXMLTree(), _Image::filename, GetCacheViewAuthenticPixels(), GetMagickModule, GetNextToken(), GetPixelBlue(), GetPixelChannels(), GetPixelGreen(), GetPixelRed(), GetXMLTreeChild(), GetXMLTreeContent(), _PixelInfo::green, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickPathExtent, MagickTrue, MaxMap, NewXMLTree(), _Image::progress_monitor, PseudoClass, _PixelInfo::red, RelinquishMagickMemory(), ResourceLimitError, _Image::rows, SetImageProgress(), SetPixelBlue(), SetPixelGreen(), SetPixelRed(), _Image::signature, _Image::storage_class, StringToDouble(), SyncCacheViewAuthenticPixels(), ThrowBinaryException, TraceEvent, and TransformEvent.

Contrast()

static void Contrast ( const int  sign, double *  red, double *  green, double *  blue  )

static

Definition at line 841 of file enhance.c.

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

Referenced by ContrastImage().

ContrastImage()

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

Definition at line 868 of file enhance.c.

References AcquireAuthenticCacheView(), _PixelInfo::blue, ClampToQuantum(), _Image::colormap, _Image::colors, _Image::columns, Contrast(), ContrastImageTag, _Image::debug, DestroyCacheView(), _Image::filename, GetCacheViewAuthenticPixels(), GetMagickModule, GetPixelBlue(), GetPixelChannels(), GetPixelGreen(), GetPixelRed(), _PixelInfo::green, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickTrue, _Image::progress_monitor, PseudoClass, _PixelInfo::red, _Image::rows, SetImageProgress(), SetPixelBlue(), SetPixelGreen(), SetPixelRed(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), and TraceEvent.

Referenced by PreviewImage(), and SepiaToneImage().

ContrastStretchImage()

MagickExport MagickBooleanType ContrastStretchImage	(	Image *	image,
		const double	black_point,
		const double	white_point,
		ExceptionInfo *	exception
	)

Definition at line 1019 of file enhance.c.

References AcquireAuthenticCacheView(), AcquireQuantumMemory(), AcquireVirtualCacheView(), _PixelInfo::alpha, AlphaPixelChannel, _PixelInfo::blue, BluePixelChannel, _Image::channel_mask, ClampToQuantum(), _Image::colormap, _Image::colors, _Image::columns, ContrastStretchImageTag, _Image::debug, DefaultChannels, DestroyCacheView(), _Image::filename, GetCacheViewAuthenticPixels(), GetCacheViewVirtualPixels(), GetMagickModule, GetPixelAlphaTraits(), GetPixelBlueTraits(), GetPixelChannelChannel(), GetPixelChannelOffset(), GetPixelChannels(), GetPixelChannelTraits(), GetPixelGreenTraits(), GetPixelIntensity(), GetPixelRedTraits(), GetPixelWriteMask(), GRAYColorspace, _PixelInfo::green, GreenPixelChannel, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickTrue, MaxMap, MaxPixelChannels, MaxRange, PerceptibleReciprocal(), _Image::progress_monitor, PseudoClass, QuantumRange, _PixelInfo::red, RedPixelChannel, RelinquishMagickMemory(), ResourceLimitError, _Image::rows, SetImageColorspace(), SetImageGray(), SetImageProgress(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), ThrowBinaryException, TraceEvent, and UpdatePixelTrait.

Referenced by NormalizeImage().

EnhanceImage()

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

Definition at line 1306 of file enhance.c.

References AcquireAuthenticCacheView(), AcquireVirtualCacheView(), _PixelInfo::alpha, _PixelInfo::black, _PixelInfo::blue, CloneImage(), _Image::columns, _Image::debug, DestroyCacheView(), DestroyImage(), DirectClass, EnhanceImageTag, EnhancePixel, _Image::filename, GetCacheViewVirtualPixels(), GetMagickModule, GetPixelChannels(), GetPixelInfo(), GetPixelInfoPixel(), GetPixelWriteMask(), _PixelInfo::green, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickEpsilon, MagickFalse, MagickTrue, _Image::progress_monitor, QuantumRange, QueueCacheViewAuthenticPixels(), _PixelInfo::red, _Image::rows, SetImageProgress(), SetImageStorageClass(), SetPixelBackgoundColor(), SetPixelViaPixelInfo(), _ExceptionInfo::signature, _Image::signature, SyncCacheViewAuthenticPixels(), and TraceEvent.

EqualizeImage()

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

Definition at line 1507 of file enhance.c.

References AcquireAuthenticCacheView(), AcquireQuantumMemory(), AcquireVirtualCacheView(), _PixelInfo::alpha, AlphaPixelChannel, _PixelInfo::blue, BluePixelChannel, _Image::channel_mask, ClampToQuantum(), _Image::colormap, _Image::colors, _Image::columns, CompositePixelChannel, _Image::debug, DestroyCacheView(), EqualizeImageTag, _Image::filename, GetCacheViewAuthenticPixels(), GetCacheViewVirtualPixels(), GetMagickModule, GetPixelAlphaTraits(), GetPixelBlueTraits(), GetPixelChannelChannel(), GetPixelChannels(), GetPixelChannelTraits(), GetPixelGreenTraits(), GetPixelIntensity(), GetPixelRedTraits(), GetPixelWriteMask(), _PixelInfo::green, GreenPixelChannel, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickTrue, MaxMap, MaxPixelChannels, _Image::progress_monitor, PseudoClass, QuantumRange, _PixelInfo::red, RedPixelChannel, RelinquishMagickMemory(), ResourceLimitError, _Image::rows, SetImageProgress(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), SyncChannels, ThrowBinaryException, TraceEvent, and UpdatePixelTrait.

Referenced by EmbossImage().

gamma_pow()

static double gamma_pow ( const double  value, const double  gamma  )

inlinestatic

Definition at line 1786 of file enhance.c.

Referenced by GammaImage(), and LevelPixel().

GammaImage()

MagickExport MagickBooleanType GammaImage	(	Image *	image,
		const double	gamma,
		ExceptionInfo *	exception
	)

Definition at line 1791 of file enhance.c.

References AcquireAuthenticCacheView(), AcquireQuantumMemory(), _PixelInfo::alpha, _PixelInfo::blue, ClampToQuantum(), _Image::colormap, _Image::colors, _Image::columns, _Image::debug, DestroyCacheView(), _Image::filename, _Image::gamma, gamma_pow(), GammaCorrectImageTag, GetCacheViewAuthenticPixels(), GetMagickModule, GetPixelAlphaTraits(), GetPixelBlueTraits(), GetPixelChannelChannel(), GetPixelChannels(), GetPixelChannelTraits(), GetPixelGreenTraits(), GetPixelRedTraits(), GetPixelWriteMask(), _PixelInfo::green, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickTrue, MaxMap, _Image::progress_monitor, PseudoClass, QuantumRange, QuantumScale, _PixelInfo::red, RelinquishMagickMemory(), ResourceLimitError, _Image::rows, SetImageProgress(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), ThrowBinaryException, TraceEvent, and UpdatePixelTrait.

Referenced by PreviewImage().

GrayscaleImage()

MagickExport MagickBooleanType GrayscaleImage	(	Image *	image,
		const PixelIntensityMethod	method,
		ExceptionInfo *	exception
	)

Definition at line 1966 of file enhance.c.

References AcquireAuthenticCacheView(), AveragePixelIntensityMethod, BrightnessPixelIntensityMethod, ClampToQuantum(), _Image::colorspace, _Image::columns, _Image::debug, DecodePixelGamma(), DestroyCacheView(), DirectClass, EncodePixelGamma(), _Image::filename, GetCacheViewAuthenticPixels(), GetMagickModule, GetPixelBlue(), GetPixelChannels(), GetPixelGreen(), GetPixelRed(), GetPixelWriteMask(), GRAYColorspace, GrayscaleImageTag, GrayscaleType, _Image::intensity, LightnessPixelIntensityMethod, LinearGRAYColorspace, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickMax, MagickMin, MagickTrue, MSPixelIntensityMethod, _Image::progress_monitor, PseudoClass, QuantumRange, Rec601LumaPixelIntensityMethod, Rec601LuminancePixelIntensityMethod, Rec709LumaPixelIntensityMethod, Rec709LuminancePixelIntensityMethod, RGBColorspace, RMSPixelIntensityMethod, _Image::rows, SetImageColorspace(), SetImageProgress(), SetImageStorageClass(), SetPixelGray(), _Image::signature, sRGBColorspace, _Image::storage_class, SyncCacheViewAuthenticPixels(), SyncImage(), TraceEvent, and _Image::type.

Referenced by CharcoalImage(), and TransformImageColorspace().

HaldClutImage()

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

Definition at line 2183 of file enhance.c.

References AcquireAuthenticCacheView(), AcquireVirtualCacheView(), _PixelInfo::alpha, _Image::alpha_trait, _PixelInfo::black, _PixelInfo::blue, ClampToQuantum(), CMYKColorspace, _Image::colorspace, _Image::columns, CompositePixelInfoAreaBlend(), _Image::debug, DestroyCacheView(), DirectClass, _Image::filename, GetCacheViewAuthenticPixels(), GetMagickModule, GetPixelAlphaTraits(), GetPixelBlackTraits(), GetPixelBlue(), GetPixelBlueTraits(), GetPixelChannels(), GetPixelGreen(), GetPixelGreenTraits(), GetPixelInfo(), GetPixelRed(), GetPixelRedTraits(), _PixelInfo::green, HaldClutImageTag, _Image::interpolate, InterpolatePixelInfo(), LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickMin, MagickTrue, OpaqueAlphaChannel, _Image::progress_monitor, QuantumScale, _PixelInfo::red, _Image::rows, SetImageAlphaChannel(), SetImageProgress(), SetImageStorageClass(), SetPixelAlpha(), SetPixelBlack(), SetPixelBlue(), SetPixelGreen(), SetPixelRed(), _Image::signature, SyncCacheViewAuthenticPixels(), TraceEvent, UndefinedPixelTrait, and UpdatePixelTrait.

InverseScaledSigmoidal()

static double InverseScaledSigmoidal ( const double  a, const double  b, const double  x  )

inlinestatic

Definition at line 3728 of file enhance.c.

References MagickEpsilon, and Sigmoidal.

LevelImage()

MagickExport MagickBooleanType LevelImage	(	Image *	image,
		const double	black_point,
		const double	white_point,
		const double	gamma,
		ExceptionInfo *	exception
	)

Definition at line 2407 of file enhance.c.

References AcquireAuthenticCacheView(), _PixelInfo::alpha, _PixelInfo::blue, ClampImage(), ClampToQuantum(), _Image::colormap, _Image::colors, _Image::columns, _Image::debug, DestroyCacheView(), _Image::filename, GetCacheViewAuthenticPixels(), GetMagickModule, GetPixelAlphaTraits(), GetPixelBlueTraits(), GetPixelChannelChannel(), GetPixelChannels(), GetPixelChannelTraits(), GetPixelGreenTraits(), GetPixelRedTraits(), GetPixelWriteMask(), _PixelInfo::green, LevelImageTag, LevelPixel(), LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickTrue, _Image::progress_monitor, PseudoClass, QuantumRange, _PixelInfo::red, _Image::rows, SetImageProgress(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), TraceEvent, and UpdatePixelTrait.

Referenced by AutoGammaImage(), LevelImageColors(), LinearStretchImage(), and MinMaxStretchImage().

LevelImageColors()

MagickExport MagickBooleanType LevelImageColors	(	Image *	image,
		const PixelInfo *	black_color,
		const PixelInfo *	white_color,
		const MagickBooleanType	invert,
		ExceptionInfo *	exception
	)

Definition at line 2715 of file enhance.c.

References _PixelInfo::alpha, _Image::alpha_trait, AlphaChannel, _PixelInfo::black, BlackChannel, _PixelInfo::blue, BlueChannel, CMYKColorspace, _Image::colorspace, _PixelInfo::colorspace, _Image::debug, _Image::filename, GetMagickModule, GetPixelAlphaTraits(), GetPixelBlackTraits(), GetPixelBlueTraits(), GetPixelGreenTraits(), GetPixelRedTraits(), _PixelInfo::green, GreenChannel, IsGrayColorspace(), LevelImage(), LevelizeImage(), LogMagickEvent(), MagickCoreSignature, MagickFalse, MagickTrue, _PixelInfo::red, RedChannel, SetImageChannelMask(), SetImageColorspace(), _Image::signature, sRGBColorspace, TraceEvent, UndefinedPixelTrait, and UpdatePixelTrait.

Referenced by SetImageAlphaChannel().

LevelizeImage()

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

Definition at line 2562 of file enhance.c.

References AcquireAuthenticCacheView(), _PixelInfo::alpha, _PixelInfo::blue, _Image::colormap, _Image::colors, _Image::columns, _Image::debug, DestroyCacheView(), _Image::filename, GetCacheViewAuthenticPixels(), GetMagickModule, GetPixelAlphaTraits(), GetPixelBlueTraits(), GetPixelChannelChannel(), GetPixelChannels(), GetPixelChannelTraits(), GetPixelGreenTraits(), GetPixelRedTraits(), GetPixelWriteMask(), _PixelInfo::green, LevelizeImageTag, LevelizeValue, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickTrue, _Image::progress_monitor, PseudoClass, QuantumRange, _PixelInfo::red, _Image::rows, SetImageProgress(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), TraceEvent, and UpdatePixelTrait.

Referenced by LevelImageColors().

LevelPixel()

static double LevelPixel ( const double  black_point, const double  white_point, const double  gamma, const double  pixel  )

inlinestatic

Definition at line 2392 of file enhance.c.

References gamma_pow(), MagickEpsilon, and QuantumRange.

Referenced by LevelImage().

LinearStretchImage()

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

Definition at line 2851 of file enhance.c.

References AcquireQuantumMemory(), AcquireVirtualCacheView(), ClampToQuantum(), _Image::columns, DestroyCacheView(), _Image::filename, GetCacheViewVirtualPixels(), GetPixelChannels(), GetPixelIntensity(), LevelImage(), magick_restrict, MagickCoreSignature, MaxMap, RelinquishMagickMemory(), ResourceLimitError, _Image::rows, _Image::signature, and ThrowBinaryException.

ModulateHCL()

static void ModulateHCL ( const double  percent_hue, const double  percent_chroma, const double  percent_luma, double *  red, double *  green, double *  blue  )

inlinestatic

Definition at line 2960 of file enhance.c.

References ConvertHCLToRGB(), and ConvertRGBToHCL().

Referenced by ModulateImage().

ModulateHCLp()

static void ModulateHCLp ( const double  percent_hue, const double  percent_chroma, const double  percent_luma, double *  red, double *  green, double *  blue  )

inlinestatic

Definition at line 2979 of file enhance.c.

References ConvertHCLpToRGB(), and ConvertRGBToHCLp().

Referenced by ModulateImage().

ModulateHSB()

static void ModulateHSB ( const double  percent_hue, const double  percent_saturation, const double  percent_brightness, double *  red, double *  green, double *  blue  )

inlinestatic

Definition at line 2998 of file enhance.c.

References ConvertHSBToRGB(), and ConvertRGBToHSB().

Referenced by ModulateImage().

ModulateHSI()

static void ModulateHSI ( const double  percent_hue, const double  percent_saturation, const double  percent_intensity, double *  red, double *  green, double *  blue  )

inlinestatic

Definition at line 3017 of file enhance.c.

References ConvertHSIToRGB(), and ConvertRGBToHSI().

Referenced by ModulateImage().

ModulateHSL()

static void ModulateHSL ( const double  percent_hue, const double  percent_saturation, const double  percent_lightness, double *  red, double *  green, double *  blue  )

inlinestatic

Definition at line 3036 of file enhance.c.

References ConvertHSLToRGB(), and ConvertRGBToHSL().

Referenced by ModulateImage().

ModulateHSV()

static void ModulateHSV ( const double  percent_hue, const double  percent_saturation, const double  percent_value, double *  red, double *  green, double *  blue  )

inlinestatic

Definition at line 3055 of file enhance.c.

References ConvertHSVToRGB(), and ConvertRGBToHSV().

Referenced by ModulateImage().

ModulateHWB()

static void ModulateHWB ( const double  percent_hue, const double  percent_whiteness, const double  percent_blackness, double *  red, double *  green, double *  blue  )

inlinestatic

Definition at line 3074 of file enhance.c.

References ConvertHWBToRGB(), and ConvertRGBToHWB().

Referenced by ModulateImage().

ModulateImage()

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

Definition at line 3131 of file enhance.c.

References AcquireAuthenticCacheView(), _PixelInfo::blue, ClampToQuantum(), _Image::colormap, _Image::colors, _Image::colorspace, _Image::columns, _Image::debug, DestroyCacheView(), _Image::filename, GetCacheViewAuthenticPixels(), GetImageArtifact(), GetMagickModule, GetPixelBlue(), GetPixelChannels(), GetPixelGreen(), GetPixelRed(), GetPixelWriteMask(), _PixelInfo::green, HCLColorspace, HCLpColorspace, HSBColorspace, HSIColorspace, HSLColorspace, HSVColorspace, HWBColorspace, IssRGBCompatibleColorspace(), LCHabColorspace, LCHColorspace, LCHuvColorspace, LogMagickEvent(), magick_restrict, MagickColorspaceOptions, MagickCoreSignature, MagickFalse, MagickTrue, ModulateHCL(), ModulateHCLp(), ModulateHSB(), ModulateHSI(), ModulateHSL(), ModulateHSV(), ModulateHWB(), ModulateImageTag, ModulateLCHab(), ModulateLCHuv(), ParseCommandOption(), ParseGeometry(), _Image::progress_monitor, PseudoClass, QuantumRange, _PixelInfo::red, _GeometryInfo::rho, _Image::rows, SetImageColorspace(), SetImageProgress(), SetPixelBlue(), SetPixelGreen(), SetPixelRed(), _GeometryInfo::sigma, SigmaValue, _Image::signature, sRGBColorspace, _Image::storage_class, SyncCacheViewAuthenticPixels(), TraceEvent, UndefinedColorspace, _GeometryInfo::xi, and XiValue.

Referenced by PreviewImage().

ModulateLCHab()

static void ModulateLCHab ( const double  percent_luma, const double  percent_chroma, const double  percent_hue, double *  red, double *  green, double *  blue  )

inlinestatic

Definition at line 3093 of file enhance.c.

References ConvertLCHabToRGB(), and ConvertRGBToLCHab().

Referenced by ModulateImage().

ModulateLCHuv()

static void ModulateLCHuv ( const double  percent_luma, const double  percent_chroma, const double  percent_hue, double *  red, double *  green, double *  blue  )

inlinestatic

Definition at line 3112 of file enhance.c.

References ConvertLCHuvToRGB(), and ConvertRGBToLCHuv().

Referenced by ModulateImage().

NegateImage()

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

Definition at line 3420 of file enhance.c.

References AcquireAuthenticCacheView(), _PixelInfo::blue, _Image::colormap, _Image::colors, _Image::columns, _Image::debug, DestroyCacheView(), _Image::filename, GetCacheViewAuthenticPixels(), GetMagickModule, GetPixelBlueTraits(), GetPixelChannelChannel(), GetPixelChannels(), GetPixelChannelTraits(), GetPixelGreenTraits(), GetPixelRedTraits(), GetPixelWriteMask(), _PixelInfo::green, IsPixelGray(), LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickTrue, NegateImageTag, _Image::progress_monitor, PseudoClass, QuantumRange, _PixelInfo::red, _Image::rows, SetImageProgress(), _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), TraceEvent, and UpdatePixelTrait.

Referenced by CharcoalImage(), ClipImagePath(), MontageImageList(), RenderPostscript(), and SketchImage().

NormalizeImage()

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

Definition at line 3618 of file enhance.c.

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

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

SigmoidalContrastImage()

MagickExport MagickBooleanType SigmoidalContrastImage	(	Image *	image,
		const MagickBooleanType	sharpen,
		const double	contrast,
		const double	midpoint,
		ExceptionInfo *	exception
	)

Definition at line 3755 of file enhance.c.

References AcquireAuthenticCacheView(), _PixelInfo::alpha, _PixelInfo::blue, _Image::colormap, _Image::colors, _Image::columns, _Image::debug, DestroyCacheView(), _Image::filename, GetCacheViewAuthenticPixels(), GetMagickModule, GetPixelAlphaTraits(), GetPixelBlueTraits(), GetPixelChannelChannel(), GetPixelChannels(), GetPixelChannelTraits(), GetPixelGreenTraits(), GetPixelRedTraits(), GetPixelWriteMask(), _PixelInfo::green, InverseScaledSig, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickEpsilon, MagickFalse, MagickTrue, _Image::progress_monitor, PseudoClass, QuantumRange, _PixelInfo::red, _Image::rows, ScaledSig, SetImageProgress(), SigmoidalContrastImageTag, _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), TraceEvent, and UpdatePixelTrait.