hipstopgm
converts a HIPS image file to PGM format
TLDR
Convert HIPS file to PGM
$ hipstopgm [file.hip] > [output.pgm]
Convert from stdin$ cat [file.hip] | hipstopgm > [output.pgm]
SYNOPSIS
hipstopgm [hipsfile]
DESCRIPTION
hipstopgm converts a HIPS (Human Information Processing Laboratory) image file to PGM (Portable Graymap) format. Part of the Netpbm package of graphics manipulation tools. If the HIPS file contains multiple frames, they are concatenated vertically in the output.