yuvsplittoppm(1) General Commands Manual yuvsplittoppm(1)NAME
yuvsplittoppm - convert a Y- and a U- and a V-file into a portable pixmap
yuvsplittoppm basename width height [-ccir601]
Reads three files, containing the YUV components, as input. These files are basename.Y, basename.U, and basename.V. Produces a portable
pixmap on stdout.
Since the YUV files are raw files, the dimensions width and height must be specified on the command line.
Assumes that the YUV triplets are scaled into the smaller range of the CCIR 601 (MPEG) standard. Else, the JFIF (JPEG) standard is
SEE ALSO ppmtoyuvsplit(1), yuvtoppm(1), ppm(5)AUTHOR
Marcel Wijkstra <firstname.lastname@example.org>, based on ppmtoyuvsplit.
26 August 93 yuvsplittoppm(1)
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pnmarith(1) General Commands Manual pnmarith(1)NAME
pnmarith - perform arithmetic on two portable anymaps
pnmarith -add|-subtract|-multiply|-difference|-minimum|-maximum. pnmfile1 pnmfile2
Reads two portable anymaps as input. Performs the specified arithmetic operation, and produces a portable anymap as output. The two input
anymaps must be the same width and height.
The arithmetic is performed between corresponding pixels in the two anymaps, as if maxval was 1.0, black was 0.0, and a linear scale in
between. Results that fall outside of [0..1) are truncated.
The operator -difference calculates the absolute value of pnmarith -subtract pnmfile1 pnmfile2, i.e. no truncation is done.
All flags can be abbreviated to their shortest unique prefix.
SEE ALSO pbmmask(1), pnmpaste(1), pnminvert(1), pnm(5)AUTHOR
Copyright (C) 1989, 1991 by Jef Poskanzer. Lightly modified by Marcel Wijkstra <email@example.com>
26 August 1993 pnmarith(1)
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