ppc_image_reduce_test, a C code which calls ppc_image_reduce(), which reduces the size of an image stored in PGM or PBM format, by applying a Haar transform and removing modes of low importance, from Rouben Rostamian's "Programming Projects in C";
While the reduction of PGM images seems to work properly, the PPM image reduction fails, for some reason. The bug has not been tracked down yet!
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ppc_image_reduce, a C code which reduces the size of an image stored in PGM or PBM format, by applying a Haar transform and removing modes of low importance, from Rouben Rostamian's "Programming Projects in C";