pngcomp(1)

NAME

   pngcomp - PNG (Portable Network Graphics) comparison tool

SYNOPSIS

   pngcomp [-vVh] image1.png image2.png

DESCRIPTION

   pngcomp  gives  some  basic statistics about the difference between two
   images. It was created as  a  measure  of  various  color  quantization
   methods.

OPTIONS

   -v     Verbose, does nothing as yet.

   -V     Version, prints version information.

   -h     Help, prints this message.

NOTES

   The  stats  created  by  this program are purely based on the Euclidean
   distance in RGBA space between the pixels of the images. Later versions
   will  include  different  measures such as CIE color space measurements
   and filters for perception models.

   The error calculation used reflects the  perceived  quality  of  images
   only roughly.

   To determine what image is better nothing can surpass having a look for
   yourself!

AUTHOR

   pngcomp was written by Stuart Coyle <[email protected]>.

   This   manual   page   was   written   by   Nelson   A.   de   Oliveira
   <[email protected]>, for the Debian project (but may be used by others).

                    Sat, 08 Jul 2006 00:54:16 -0300             PNGCOMP(1)

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