Index of Software Extensions

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• IMG* Library

  • imgPpmCompare compares two PPM images and returns a PBM image marking the pixels where the two images differ. This routine provides an easy way to extract curves drawn on a copy of an image for further processing.

  • imgPpmUncompare performs the opposite function. It takes a PBM image and a PPM image and marks the color image with pixels in your choice of color. It provides an easy way to compare an algorithm's output with the original image.

  • imgCanny2 is an implementation of imgCanny except that two floating-point images representing the gradient are passed in as input.

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• Vista Image Library

  • svl_vcanny is a multi-dimensional implementation of Vista's Canny edge detector. It is designed to work on all bands of an image rather than the first.

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• MATLAB

  • RGB and CIE Lab converters convert color images between different color spaces.

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• SGI ImageVision Library

  • The PPM Format Extension allows PPM images to be read and used by other routines.

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• Tcl/Tk

  • crop, or "Image Cropper," is a utility that allows one to easily crop and save swatches of PPM images.

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