Pnminvert User Manual(0) Pnminvert User Manual(0) NAME pnminvert - invert a PNM image SYNOPSIS pnminvert [pnmfile] DESCRIPTION This 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 bright- ness, 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. SEE ALSO pnm(1) AUTHOR Copyright (C) 1989 by Jef Poskanzer. DOCUMENT SOURCE This manual page was generated by the Netpbm tool 'makeman' from HTML source. The master documentation is at http://netpbm.sourceforge.net/doc/pnminvert.html netpbm documentation 08 August 1989 Pnminvert User Manual(0)
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