pnmsmooth - smooth out an image |
pnmsmooth [-size width height] [-dump dumpfile] [pnmfile] |
Smooths out an image by replacing each pixel with the average of its width X height neighbors. It is implemented as a C progam that generates a PGM convolution matrix and then invokes pnmconvol. |
-size width height |
Specifies the size of the convolution matrix. Default size is a 3x3 matrix. Width and height sizes must be odd. Maximum size of convolution matrix is limited by the maximum value for a pixel such that (width * height * 2) must not exceed the maximum pixel value. |
-dump dumpfile |
Generates and saves the convolution file only. Use of this option does not invoke pnmconvol. |
pnmconvol(1), pnm(5) |
Copyright (C) 1989, 1991 by Jef Poskanzer. |