yuvsplittoppm(1) [minix man page]

yuvsplittoppm(1)                                              General Commands Manual                                             yuvsplittoppm(1)

NAME

       yuvsplittoppm - convert a Y- and a U- and a V-file into a portable pixmap

SYNOPSIS

       yuvsplittoppm basename width height [-ccir601]

DESCRIPTION

       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.

OPTIONS

       -ccir601
              Assumes that the YUV triplets are scaled into the smaller range of the CCIR 601 (MPEG) standard. Else, the JFIF (JPEG)  standard  is
              assumed.

SEE ALSO

       ppmtoyuvsplit(1), yuvtoppm(1), ppm(5)

AUTHOR

       Marcel Wijkstra <wijkstra@fwi.uva.nl>, based on ppmtoyuvsplit.

                                                                   26 August 93                                                   yuvsplittoppm(1)

pnmarith(1)                                                   General Commands Manual                                                  pnmarith(1)

NAME

       pnmarith - perform arithmetic on two portable anymaps

SYNOPSIS

       pnmarith -add|-subtract|-multiply|-difference|-minimum|-maximum.  pnmfile1 pnmfile2

DESCRIPTION

       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 <wijkstra@fwi.uva.nl>

                                                                  26 August 1993                                                       pnmarith(1)