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395 <p>MagickAutoGammaImage() extracts the 'mean' from the image and adjust the image to try make set its gamma appropriatally.</p>
1234 <p>MagickContrastStretchImage() enhances the contrast of a color image by adjusting the pixels color to span the entire range of colors available. You can also reduce the influence of a particular channel with a gamma value of 0.</p>
2134 <p>MagickGammaImage() gamma-corrects an image. The same image viewed on different devices will have perceptual differences in the way the image's intensities are represented on the screen. Specify individual gamma levels for the red, green, and blue channels, or adjust all three with the gamma parameter. Values typically range from 0.8 to 2.3.</p>
2136 <p>You can also reduce the influence of a particular channel with a gamma value of 0.</p>
2141 MagickBooleanType MagickGammaImage(MagickWand *wand,const double gamma)
2156 <dd>Define the level of gamma correction. </dd>
2926 <p>MagickGetImageGamma() gets the image gamma.</p>
3907 <p>MagickLevelImage() adjusts the levels of an image by scaling the colors falling between specified white and black points to the full available quantum range. The parameters provided represent the black, mid, and white points. The black point specifies the darkest color in the image. Colors darker than the black point are set to zero. Mid point specifies a gamma correction to apply to the image. White point specifies the lightest color in the image. Colors brighter than the white point are set to the maximum quantum value.</p>
3913 const double black_point,const double gamma,const double white_point)
3915 const ChannelType channel,const double black_point,const double gamma,
3938 <dt>gamma</dt>
3939 <dd>the gamma. </dd>
3951 <p>You can also reduce the influence of a particular channel with a gamma value of 0.</p>
4276 <p>You can also reduce the influence of a particular channel with a gamma value of 0.</p>
4369 <p>You can also reduce the influence of a particular channel with a gamma value of 0.</p>
6011 <p>MagickSetImageGamma() sets the image gamma.</p>
6017 const double gamma)
6031 <dt>gamma</dt>
6032 <dd>the image gamma. </dd>