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" anaglyph "1.7 Creates a 3D anaglyph from a single image [no args] " invert "1.0 Reverses all colors of the image [no args] " invertalpha "1.0 Reverses the transparency of the image [no args] " grayscale "1.0 Converts the image into grayscale [no args] " solarize "1.0 Solarizes the image by negating the colors [no args] " sepia "1.0 Applies the well-known sepia coloring to the image [no args] " threshold "1.0 Converts the image to black&white (s<1 == darker and s>1 == brighter) " posterize "1.4 Posterizes the image by quantizing each channel to a limited number of levels " tritone "1.5 Applies 3 colors for low|mid|high range according to the brightness of the image " mixrgb "1.5 Mixes the RGB channels with the other two channels " exposure "1.4 Simulates changing the exposure of the image " gamma "1.0 Standard gamma correction (s<1 == darker and s>1 == brighter) " brightness "1.0 Change brightness (s<1 == darker and s>1 == brighter) " contrast "1.0 Change contrast (s<1 == lower and s>1 == higher) " adjustrgba "1.0 Adjust the red & green & blue & alpha channel of the image (s == [r,g,b,a]) " adjusthsba "1.0 Adjust hue & saturation & brightness & alpha channel of the image (s == [h,s,b,a]) " adjustyuva "1.6 Adjust luminance & blue–yellow chrominance & red–cyan chrominance & alpha channel of the image (s == [y,u,v,a]) " colorkey "1.6 Set alpha to 0 if pixel color values are higher than min and lower than max rgb color " chromakey "1.6 Set alpha to 0 if pixel hue & saturation & brightness matches " multiplyalpha "1.0 Multiplies the colors by the alpha values [no args] " unmultiplyalpha "1.0 Unmultiplies the alpha values from the colors [no args] " alphamask "1.0 Creates an alpha mask of the image [no args] " stackblur "1.0 Blurs the image (result is similar to gaussian bluring) " smooth "1.3 Smoothes the image (result is similar to bluring) " spinblur "1.2 Blurs by rotating the centered image " zoomblur "1.2 Blurs by zooming the centered image " motionblur "1.2 Blurs by moving the image to a defined direction " tiltshift "1.0 Blurs partly to create the miniature fake effect " outline "1.5 Creates grayscaled outline images by different operators (e.g. sobel, prewitt...). " convolve "1.0 Use your own 3x3 matrix via option m=[[n,n,n],[n,n,n],[n,n,n]] " blur "1.0 Bluring the image by (in build and extendable cvi_matrix object) convolution " median "1.0 Smoothes grainy images by (in build and extendable cvi_matrix object) convolution " sharpen "1.0 Makes image sharper by (in build and extendable cvi_matrix object) convolution " sharper "1.0 Makes image even sharper by (in build and extendable cvi_matrix object) convolution " bumplt "1.0 Embosses the image by (in build and extendable cvi_matrix object) convolution " bumpbr "1.0 ...