.\" This man page was generated by the Netpbm tool 'makeman' from HTML source. Pnminvert User Manual - Online Linux Manual PageSection : 0
Updated : 08 August 1989
Source : netpbm documentation
NAMEpnminvert - invert a PNM image .UN synopsis
SYNOPSISpnminvert [pnmfile] .UN description
DESCRIPTIONThis program is part of Netpbm(1)​. pnminvert reads a PNM image as input, inverts it black for white, and produces a PNM image as output. If the image is grayscale, pnminvert replaces a pixel with one of complementary brightness, i.e. if the original pixel has gamma-adjusted gray value G, the output pixel has gray value maxval - G. If the image is color, pnminvert inverts each individual RGB component the same as for a grayscale image. .UN options
OPTIONSThere are no command line options defined specifically for pnminvert, but it recognizes the options common to all programs based on libnetpbm (See
 Common Options ​.) .UN seealso
SEE ALSO"pnm(1)​ .UN author
AUTHORCopyright (C) 1989 by Jef Poskanzer.
DOCUMENT SOURCEThis manual page was generated by the Netpbm tool 'makeman' from HTML source. The master documentation is at http://netpbm.sourceforge.net/doc/pnminvert.html 0
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