enhance.c File Reference

#include "magick/studio.h"
#include "magick/cache-view.h"
#include "magick/color.h"
#include "magick/color-private.h"
#include "magick/colorspace.h"
#include "magick/enhance.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/gem.h"
#include "magick/geometry.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/quantum.h"
#include "magick/quantum-private.h"
#include "magick/resample.h"
#include "magick/string_.h"

Defines
#define	ClutImageTag   "Clut/Image"
#define	DullContrastImageTag   "DullContrast/Image"
#define	SharpenContrastImageTag   "SharpenContrast/Image"
#define	MaxRange(color)   ((MagickRealType) ScaleQuantumToMap((Quantum) (color)))
#define	NormalizeImageTag   "Normalize/Image"
#define	Enhance(weight)
#define	EnhanceImageTag   "Enhance/Image"
#define	EqualizeImageTag   "Equalize/Image"
#define	GammaCorrectImageTag   "GammaCorrect/Image"
#define	LevelImageTag   "Level/Image"
#define	LinearStretchImageTag   "LinearStretch/Image"
#define	ModulateImageTag   "Modulate/Image"
#define	NegateImageTag   "Negate/Image"
#define	SigmoidalContrastImageTag   "SigmoidalContrast/Image"
Functions
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)
MagickExport MagickBooleanType	LevelImage (Image *image, const char *levels)
MagickExport MagickBooleanType	LevelImageChannel (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)
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_luminosity, 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"

#define DullContrastImageTag   "DullContrast/Image"

#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++;

#define EnhanceImageTag   "Enhance/Image"

#define EqualizeImageTag   "Equalize/Image"

#define GammaCorrectImageTag   "GammaCorrect/Image"

#define LevelImageTag   "Level/Image"

#define LinearStretchImageTag   "LinearStretch/Image"

#define MaxRange

(

color

)

((MagickRealType) ScaleQuantumToMap((Quantum) (color)))

#define ModulateImageTag   "Modulate/Image"

#define NegateImageTag   "Negate/Image"

#define NormalizeImageTag   "Normalize/Image"

#define SharpenContrastImageTag   "SharpenContrast/Image"

#define SigmoidalContrastImageTag   "SigmoidalContrast/Image"

---

Function Documentation

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
	)			[static]

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
	)

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

MagickExport MagickBooleanType LevelImageChannel	(	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
	)

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

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

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

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
	)

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