pflip - flip a RADIANCE picture.
pflip [ -h ][ -v ][ -c ] input [ output ]
Pflip flips a RADIANCE picture horizontally and/or vertically. The -h option results in a horizontal exchange, and the -v option results in a vertical exchange. Both options may be applied.
The -c option indicates that the action is to correct an improper original image orientation, thus the recorded scanline ordering should not be changed.
If the -v option is not specified, the input may be piped from stdin.
getinfo(1), pcompos(1), pfilt(1), protate(1), psign(1), rpict(1)