enhance.c File Reference

#include "magick/studio.h"
#include "magick/accelerate-private.h"
#include "magick/artifact.h"
#include "magick/attribute.h"
#include "magick/cache.h"
#include "magick/cache-view.h"
#include "magick/channel.h"
#include "magick/color.h"
#include "magick/color-private.h"
#include "magick/colorspace.h"
#include "magick/colorspace-private.h"
#include "magick/composite-private.h"
#include "magick/enhance.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/fx.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/opencl.h"
#include "magick/opencl-private.h"
#include "magick/option.h"
#include "magick/pixel-accessor.h"
#include "magick/pixel-private.h"
#include "magick/quantum.h"
#include "magick/quantum-private.h"
#include "magick/resample.h"
#include "magick/resample-private.h"
#include "magick/resource_.h"
#include "magick/statistic.h"
#include "magick/string_.h"
#include "magick/string-private.h"
#include "magick/thread-private.h"
#include "magick/threshold.h"
#include "magick/token.h"
#include "magick/xml-tree.h"
Include dependency graph for enhance.c:

Defines

#define BrightnessContastImageTag   "BrightnessContast/Image"
#define ColorDecisionListCorrectImageTag   "ColorDecisionList/Image"
#define ClutImageTag   "Clut/Image"
#define ContrastImageTag   "Contrast/Image"
#define MaxRange(color)   ((MagickRealType) ScaleQuantumToMap((Quantum) (color)))
#define ContrastStretchImageTag   "ContrastStretch/Image"
#define EnhancePixel(weight)
#define EnhanceImageTag   "Enhance/Image"
#define EqualizeImageTag   "Equalize/Image"
#define GammaImageTag   "Gamma/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"

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 BrightnessContrastImage (Image *image, const double brightness, const double contrast)
MagickExport MagickBooleanType BrightnessContrastImageChannel (Image *image, const ChannelType channel, const double brightness, const double contrast)
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 ImageEnhanceImage (const Image *image, ExceptionInfo *exception)
MagickExport MagickBooleanType EqualizeImage (Image *image)
MagickExport MagickBooleanType EqualizeImageChannel (Image *image, const ChannelType channel)
static double gamma_pow (const double value, const double gamma)
MagickExport MagickBooleanType GammaImage (Image *image, const char *level)
MagickExport MagickBooleanType GammaImageChannel (Image *image, const ChannelType channel, const double gamma)
MagickExport MagickBooleanType GrayscaleImage (Image *image, const PixelIntensityMethod method)
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)
static double LevelPixel (const double black_point, const double white_point, const double gamma, const MagickRealType pixel)
MagickExport MagickBooleanType LevelImageChannel (Image *image, const ChannelType channel, const double black_point, const double white_point, const double gamma)
MagickExport MagickBooleanType LevelizeImage (Image *image, 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 ModulateHCL (const double percent_hue, const double percent_chroma, const double percent_luma, Quantum *red, Quantum *green, Quantum *blue)
static void ModulateHCLp (const double percent_hue, const double percent_chroma, const double percent_luma, Quantum *red, Quantum *green, Quantum *blue)
static void ModulateHSB (const double percent_hue, const double percent_saturation, const double percent_brightness, Quantum *red, Quantum *green, Quantum *blue)
static void ModulateHSI (const double percent_hue, const double percent_saturation, const double percent_intensity, 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 ModulateHSV (const double percent_hue, const double percent_saturation, const double percent_value, 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)
static void ModulateLCHab (const double percent_luma, const double percent_chroma, const double percent_hue, Quantum *red, Quantum *green, Quantum *blue)
static void ModulateLCHuv (const double percent_luma, const double percent_chroma, const double percent_hue, 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)
static double InverseScaledSigmoidal (const double a, const double b, const double x)
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 BrightnessContastImageTag   "BrightnessContast/Image"
#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"
#define EnhanceImageTag   "Enhance/Image"

Referenced by EnhanceImage().

#define EnhancePixel ( weight   ) 
Value:
mean=QuantumScale*((double) GetPixelRed(r)+pixel.red)/2.0; \
  distance=QuantumScale*((double) GetPixelRed(r)-pixel.red); \
  distance_squared=(4.0+mean)*distance*distance; \
  mean=QuantumScale*((double) GetPixelGreen(r)+pixel.green)/2.0; \
  distance=QuantumScale*((double) GetPixelGreen(r)-pixel.green); \
  distance_squared+=(7.0-mean)*distance*distance; \
  mean=QuantumScale*((double) GetPixelBlue(r)+pixel.blue)/2.0; \
  distance=QuantumScale*((double) GetPixelBlue(r)-pixel.blue); \
  distance_squared+=(5.0-mean)*distance*distance; \
  mean=QuantumScale*((double) GetPixelOpacity(r)+pixel.opacity)/2.0; \
  distance=QuantumScale*((double) GetPixelOpacity(r)-pixel.opacity); \
  distance_squared+=(5.0-mean)*distance*distance; \
  if (distance_squared < 0.069) \
    { \
      aggregate.red+=(weight)*GetPixelRed(r); \
      aggregate.green+=(weight)*GetPixelGreen(r); \
      aggregate.blue+=(weight)*GetPixelBlue(r); \
      aggregate.opacity+=(weight)*GetPixelOpacity(r); \
      total_weight+=(weight); \
    } \
  r++;

Referenced by EnhanceImage().

#define EqualizeImageTag   "Equalize/Image"

Referenced by EqualizeImageChannel().

#define GammaImageTag   "Gamma/Image"

Referenced by GammaImageChannel().

#define GrayscaleImageTag   "Grayscale/Image"

Referenced by GrayscaleImage().

#define HaldClutImageTag   "Clut/Image"

Referenced by HaldClutImageChannel().

#define LevelImageTag   "Level/Image"

Referenced by LevelImageChannel().

#define LevelizeImageTag   "Levelize/Image"

Referenced by LevelizeImageChannel().

#define LevelizeValue (  ) 
Value:
ClampToQuantum(((MagickRealType) gamma_pow((double) \
  (QuantumScale*(x)),gamma))*(white_point-black_point)+black_point)

Referenced by LevelizeImageChannel().

#define LinearStretchImageTag   "LinearStretch/Image"
#define MaxRange ( color   )     ((MagickRealType) ScaleQuantumToMap((Quantum) (color)))
#define ModulateImageTag   "Modulate/Image"

Referenced by ModulateImage().

#define NegateImageTag   "Negate/Image"

Referenced by NegateImageChannel().

#define ScaledSigmoidal ( a,
b,
 ) 
Value:
(                    \
  (Sigmoidal((a),(b),(x))-Sigmoidal((a),(b),0.0)) / \
  (Sigmoidal((a),(b),1.0)-Sigmoidal((a),(b),0.0)) )

Referenced by SigmoidalContrastImageChannel().

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

Referenced by InverseScaledSigmoidal().

#define SigmoidalContrastImageTag   "SigmoidalContrast/Image"

Function Documentation

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 
)

References MinMaxStretchImage().

Referenced by AutoLevelImage().

MagickExport MagickBooleanType BrightnessContrastImage ( Image image,
const double  brightness,
const double  contrast 
)
MagickExport MagickBooleanType BrightnessContrastImageChannel ( Image image,
const ChannelType  channel,
const double  brightness,
const double  contrast 
)
MagickExport MagickBooleanType ClutImage ( Image image,
const Image clut_image 
)
MagickExport MagickBooleanType ClutImageChannel ( Image image,
const ChannelType  channel,
const Image clut_image 
)
MagickExport MagickBooleanType ColorDecisionListImage ( Image image,
const char *  color_correction_collection 
)
static void Contrast ( const int  sign,
Quantum red,
Quantum green,
Quantum blue 
) [static]

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

Referenced by ContrastImage().

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 
)

References AcquireAuthenticCacheView(), AcquireQuantumMemory(), _PixelPacket::blue, _QuantumPixelPacket::blue, _MagickPixelPacket::blue, BlueChannel, ClampToQuantum(), CMYKColorspace, _Image::colormap, _Image::colors, _Image::colorspace, _Image::columns, ContrastStretchImageTag, _Image::debug, DestroyCacheView(), DirectClass, _Image::exception, _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetCacheViewVirtualPixels(), GetMagickModule, GetPixelBlue, GetPixelGreen, GetPixelIndex, GetPixelIntensity(), GetPixelOpacity, GetPixelRed, GRAYColorspace, _PixelPacket::green, _QuantumPixelPacket::green, _MagickPixelPacket::green, GreenChannel, _QuantumPixelPacket::index, _MagickPixelPacket::index, IndexChannel, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickTrue, MaxMap, MaxRange, _PixelPacket::opacity, _QuantumPixelPacket::opacity, _MagickPixelPacket::opacity, OpacityChannel, _Image::progress_monitor, PseudoClass, QuantumRange, _PixelPacket::red, _QuantumPixelPacket::red, _MagickPixelPacket::red, RedChannel, RelinquishMagickMemory(), ResourceLimitError, _Image::rows, ScaleMapToQuantum(), ScaleQuantumToMap(), SetImageColorspace(), SetImageGray(), SetImageProgress(), SetPixelBlue, SetPixelGreen, SetPixelIndex, SetPixelOpacity, SetPixelRed, _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), SyncChannels, ThrowBinaryException, and TraceEvent.

Referenced by ContrastStretchImage(), and NormalizeImageChannel().

MagickExport Image* EnhanceImage ( const Image image,
ExceptionInfo exception 
)
MagickExport MagickBooleanType EqualizeImage ( Image image  ) 
MagickExport MagickBooleanType EqualizeImageChannel ( Image image,
const ChannelType  channel 
)
static double gamma_pow ( const double  value,
const double  gamma 
) [inline, static]

Referenced by GammaImageChannel(), and LevelPixel().

MagickExport MagickBooleanType GammaImage ( Image image,
const char *  level 
)
MagickExport MagickBooleanType GammaImageChannel ( Image image,
const ChannelType  channel,
const double  gamma 
)
MagickExport MagickBooleanType GrayscaleImage ( Image image,
const PixelIntensityMethod  method 
)
MagickExport MagickBooleanType HaldClutImage ( Image image,
const Image hald_image 
)
MagickExport MagickBooleanType HaldClutImageChannel ( Image image,
const ChannelType  channel,
const Image hald_image 
)
static double InverseScaledSigmoidal ( const double  a,
const double  b,
const double  x 
) [inline, static]

References MagickEpsilon, and Sigmoidal.

Referenced by SigmoidalContrastImageChannel().

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 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 LevelizeImage ( Image image,
const double  black_point,
const double  white_point,
const double  gamma 
)

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 
)
static double LevelPixel ( const double  black_point,
const double  white_point,
const double  gamma,
const MagickRealType  pixel 
) [inline, static]
MagickExport MagickBooleanType LinearStretchImage ( Image image,
const double  black_point,
const double  white_point 
)
static void ModulateHCL ( const double  percent_hue,
const double  percent_chroma,
const double  percent_luma,
Quantum red,
Quantum green,
Quantum blue 
) [inline, static]

References ConvertHCLToRGB(), and ConvertRGBToHCL().

Referenced by ModulateImage().

static void ModulateHCLp ( const double  percent_hue,
const double  percent_chroma,
const double  percent_luma,
Quantum red,
Quantum green,
Quantum blue 
) [inline, static]

References ConvertHCLpToRGB(), and ConvertRGBToHCLp().

Referenced by ModulateImage().

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

References ConvertHSBToRGB(), and ConvertRGBToHSB().

Referenced by ModulateImage().

static void ModulateHSI ( const double  percent_hue,
const double  percent_saturation,
const double  percent_intensity,
Quantum red,
Quantum green,
Quantum blue 
) [inline, static]

References ConvertHSIToRGB(), and ConvertRGBToHSI().

Referenced by ModulateImage().

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

References ConvertHSLToRGB(), and ConvertRGBToHSL().

Referenced by ModulateImage().

static void ModulateHSV ( const double  percent_hue,
const double  percent_saturation,
const double  percent_value,
Quantum red,
Quantum green,
Quantum blue 
) [inline, static]

References ConvertHSVToRGB(), and ConvertRGBToHSV().

Referenced by ModulateImage().

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

References ConvertHWBToRGB(), and ConvertRGBToHWB().

Referenced by ModulateImage().

MagickExport MagickBooleanType ModulateImage ( Image image,
const char *  modulate 
)
static void ModulateLCHab ( const double  percent_luma,
const double  percent_chroma,
const double  percent_hue,
Quantum red,
Quantum green,
Quantum blue 
) [inline, static]

References ConvertLCHabToRGB(), and ConvertRGBToLCHab().

Referenced by ModulateImage().

static void ModulateLCHuv ( const double  percent_luma,
const double  percent_chroma,
const double  percent_hue,
Quantum red,
Quantum green,
Quantum blue 
) [inline, static]

References ConvertLCHuvToRGB(), and ConvertRGBToLCHuv().

Referenced by ModulateImage().

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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