version 1, including all changes.
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perry |
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PPMNTSC |
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!!!PPMNTSC |
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NAME |
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SYNOPSIS |
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DESCRIPTION |
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OPTIONS |
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SEE ALSO |
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AUTHOR |
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---- |
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!!NAME |
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ppmntsc - Make RGB colors legal for NTSC or PAL color systems. |
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!!SYNOPSIS |
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__ppmntsc__ [[ __--pal__ ] [[ __--legalonly__ ] [[ |
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__--illegalonly__ ] [[ __--correctedonly__ ] [[ |
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__--verbose__ ] [[ __--debug__ ] [[ ''infile'' |
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] |
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Minimum unique abbreviations of options are |
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acceptable. |
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!!DESCRIPTION |
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This program makes colors legal in the NTSC (or PAL) color |
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systems. Often, images generated on the computer are made |
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for use in movies which ultimately end up on video tape. |
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However, the range of colors (as specified by their RGB |
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values) on a computer does not match the range of colors |
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that can be represented using the NTSC (or PAL) systems. If |
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an image with |
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This utility tests each pixel in an image to see if it falls |
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within the legal NTSC (or PAL) range. If not, it raises or |
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lowers the pixel's saturation in the output so that it does |
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fall within legal limits. Pixels that are already OK just go |
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unmodified into the output. |
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Input is from the file named ''input''. If ''input'' |
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is __-__, input is from Standard Input. If you don't |
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specify ''input'', input is from Standard |
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Input. |
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Output is always to Standard Output. |
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This program handles multi-image PPM input, producing |
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multi-image PPM output. |
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!!OPTIONS |
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__--pal__ |
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Use the PAL transform instead of the default |
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NTSC. |
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__--verbose__ |
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Print a grand total of the number of illegal |
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pixels. |
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__--debug__ |
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Produce a humongous listing of illegal colors and their |
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legal counterparts. NOTE: This option may produce a great |
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deal of output. |
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__--legalonly__ |
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Output only pixels that are already legal. Output black in |
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place of pixels that are not. |
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__--illegalonly__ |
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Output only pixels that are illegal (and output them |
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uncorrected). Output black in place of pixels that are |
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already legal. |
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__--correctedonly__ |
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Output only pixels that are corrected versions of illegal |
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pixels. Output black in place of pixels that are already |
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legal. |
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!!SEE ALSO |
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ppm(5), ppmdepth(1), ppmdim(1), |
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ppmbrighten(1) |
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!!AUTHOR |
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Wes Barris, Minnesota Supercomputer Center, Inc., Bryan |
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Henderson |
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---- |
