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.
getinfo(1), pcompos(1), pfilt(1), protate(1), psign(1), rpict(1)