pgmkernel

Generate a convolution kernel to be used with pnmconvol. See also: pnmconvol. More information: https://netpbm.sourceforge.net/doc/pgmkernel.html.

• Generate a convolution kernel:

pgmkernel width height > path/to/output.pgm

• Generate a quadratic convolution kernel:

pgmkernel size > path/to/output.pgm

• Specify the weight of the center in the generated kernel:

pgmkernel -weight value width height > path/to/output.pgm