Software: Apache/2.2.3 (CentOS). PHP/5.1.6 uname -a: Linux mx-ll-110-164-51-230.static.3bb.co.th 2.6.18-194.el5PAE #1 SMP Fri Apr 2 15:37:44 uid=48(apache) gid=48(apache) groups=48(apache) Safe-mode: OFF (not secure) /usr/share/doc/netpbm-10.35.58/userguide/ drwxr-xr-x |
Viewing file: ppmflash.html (2.04 KB) -rw-r--r-- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) | ppmflashUpdated: 26 January 2003Table Of Contents NAMEppmflash - brighten a picture to approach whiteSYNOPSISppmflash flashfactor [ppmfile]DESCRIPTIONThis program is part of Netpbm. ppmflash 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. flashfactor is a real number between 0 and 1, inclusive. ppmflash increases the intensity of each RGB component by the fraction flashfactor 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), ppmflash 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%. If flashfactor is zero, the output is identical to the input. If flashfactor is one, the output is all white. ppmbrighten does a more normal kind of brightening. pamfunc does a very simple brightening. Both ppmbrighten and pamfunc can reduce brightness as well. pnmgamma is another way people do a similar brightening, though it isn't really intended for that. SEE ALSOppmbrighten pamfunc, pnmgamma, ppm,AUTHORCopyright (C) 1993 by Frank NeumannTable Of Contents |
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Useful Commands
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Php Safe-Mode Bypass (Read Files)
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