Usage: enframe in.pgm grayvalue out.pgm
Description: The result out.pgm is larger than in.pgm since two rows and two columns (and two planes for 3D images) are added. Its border is set to grayvalue, all other pixels are copied from in.pgm.
Types supported: byte 2d, long 2d, float 2d, byte 3d, long 3d, float 3d.
Category: convert, geo