| Linux / Unix Command: pgmkernel |
NAME
pgmkernel - generate a convolution kernelSYNOPSIS
pgmkernel [ -weight w ] width [ height ]DESCRIPTION
Generates a portable graymap array of size width x height (or width x width if height is not specified) to be used as a convolution file by pnmconvol. The data in the convolution array K are computed according to the formula:K(i,j) = 1 / ( 1 + w * sqrt((i-width/2)^2 + (j-height/2)^2))
where w is a coefficient specified via the -weight flag, and width and height are the X and Y filter sizes.
The output PGM file is always written out in ASCII format.
OPTIONS
The optional -weight flag should be a real number greater than -1. The default value is 6.0.SEE ALSO
pnmconvol(1), pnmsmooth(1)Important: Use the man command (% man) to see how a command is used on your particular computer.
