Lines Matching defs:Contrast
206 % BrightnessContrastImage() changes the brightness and/or contrast of an
207 % image. It converts the brightness and contrast parameters into slope and
213 % const double brightness,const double contrast,ExceptionInfo *exception)
221 % o contrast: the contrast percent (-100 .. 100).
227 const double brightness,const double contrast,ExceptionInfo *exception)
247 alpha=contrast;
271 % contrast amplification is limited, so as to reduce this problem of noise
293 % o clip_limit: contrast limit for localised changes in contrast. A limit
294 % less than 1 results in standard non-contrast limited AHE.
1361 % image contrast otherwise the contrast is reduced.
1372 % o sharpen: Increase or decrease image contrast.
1378 static void Contrast(const int sign,double *red,double *green,double *blue)
1386 Enhance contrast: dark color become darker, light color become lighter.
1408 #define ContrastImageTag "Contrast/Image"
1440 Contrast enhance colormap.
1452 Contrast(sign,&red,&green,&blue);
1459 Contrast enhance image.
1494 Contrast(sign,&red,&green,&blue);
1533 % to improve the contrast in an image by 'stretching' the range of intensity
1718 Stretch-contrast colormap.
1749 Stretch-contrast image.
3040 % It can be used to de-contrast a greyscale image to the exact levels
4095 % The NormalizeImage() method enhances the contrast of a color image by
4134 % SigmoidalContrastImage() adjusts the contrast of an image with a non-linear
4135 % sigmoidal contrast algorithm. Increase the contrast of the image using a
4137 % Contrast indicates how much to increase the contrast (0 is none; 3 is
4140 % sharpen to MagickTrue to increase the image contrast otherwise the contrast
4153 % o sharpen: Increase or decrease image contrast.
4155 % o contrast: strength of the contrast, the larger the number the more
4201 zero. This is fixed below by exiting immediately when contrast is small,
4213 Inverse of ScaledSigmoidal, used for +sigmoidal-contrast. Because b
4249 const MagickBooleanType sharpen,const double contrast,const double midpoint,
4254 ScaledSigmoidal(contrast,QuantumScale*midpoint,QuantumScale*(x))) )
4256 InverseScaledSigmoidal(contrast,QuantumScale*midpoint,QuantumScale*(x))) )
4278 Side effect: may clamp values unless contrast<MagickEpsilon, in which
4281 if (contrast < MagickEpsilon)
4284 Sigmoidal-contrast enhance colormap.
4325 Sigmoidal-contrast enhance image.
