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Diffstat (limited to 'upstream/opensuse-leap-15-6/man1/ppmflash.1')
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diff --git a/upstream/opensuse-leap-15-6/man1/ppmflash.1 b/upstream/opensuse-leap-15-6/man1/ppmflash.1 new file mode 100644 index 00000000..f7a2fd0a --- /dev/null +++ b/upstream/opensuse-leap-15-6/man1/ppmflash.1 @@ -0,0 +1,68 @@ +\ +.\" This man page was generated by the Netpbm tool 'makeman' from HTML source. +.\" Do not hand-hack it! If you have bug fixes or improvements, please find +.\" the corresponding HTML page on the Netpbm website, generate a patch +.\" against that, and send it to the Netpbm maintainer. +.TH "Ppmflash User Manual" 0 "26 January 2003" "netpbm documentation" + +.UN lbAB +.SH NAME +ppmflash - brighten a picture to approach white + +.UN lbAC +.SH SYNOPSIS +ppmflash +\fIflashfactor\fP +[\fIppmfile\fP] + +.UN lbAD +.SH DESCRIPTION +.PP +This program is part of +.BR "Netpbm" (1)\c +\&. +.PP +\fBppmflash\fP reads a PPM image as input. It changes the color of +each pixel to bring it a specified amount closer to white. It +generates a PPM image of the result. +.PP +\fIflashfactor\fP is a real number between 0 and 1, inclusive. +\fBppmflash\fP increases the intensity of each RGB component by the +fraction \fIflashfactor\fP of the difference between the current +value and full intensity. So if a pixel contains 60% full red, 10% +full green, and no blue and you specify 0.5 (half), \fBppmflash\fP +increases the red to 80% (because it was 40% from full intensity, so +it adds half of 40% to the original 60%), the green to 55%, and the +blue to 50%. +.PP +If \fIflashfactor\fP is zero, the output is identical to the input. +If \fIflashfactor\fP is one, the output is all white. +.PP +\fBppmbrighten\fP does a more normal kind of brightening. +\fBpamfunc\fP does a very simple brightening. Both +\fBppmbrighten\fP and \fBpamfunc\fP can reduce brightness as well. +.PP +\fBpnmgamma\fP is another way people do a similar brightening, though +it isn't really intended for that. + +.UN lbAE +.SH SEE ALSO +.BR "ppmbrighten" (1)\c +\& +.BR "pamfunc" (1)\c +\&, +.BR "pnmgamma" (1)\c +\&, +.BR "ppm" (5)\c +\&, + +.UN lbAF +.SH AUTHOR + +Copyright (C) 1993 by Frank Neumann +.SH DOCUMENT SOURCE +This manual page was generated by the Netpbm tool 'makeman' from HTML +source. The master documentation is at +.IP +.B http://netpbm.sourceforge.net/doc/ppmflash.html +.PP
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