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pnmarith (1)
  • >> pnmarith (1) ( Разные man: Команды и прикладные программы пользовательского уровня )
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    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>


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    SEE ALSO
    AUTHOR


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