NAME

       jpegjudge - guess jpeg picture quality

SYNOPSIS

       jpegjudge [ -V ]

       jpegjudge [ -b ] file ...

DESCRIPTION

       Jpegjudge  reads  each argument and attempts to guess the quality with which it was saved.
       Currently, only a rough indicator is calculcated, ranging from 0 (lowest quality) to  1000
       (highest  quality),  an  extension  to  other  formats would be straightforward, but isn't
       planned.

       It can read all pictures the IJG jpeg  library  can  read,  i.e.  normal  and  progressive
       jpeg's.

   OPTIONS
       -b     Display only quality indicator, suppress other information (filenames).

       -h, --help
              Display short summary of options.

       -V, --version
              Display version number and exit.

BUGS

       It should be possible to judge pictures stored in non-lossy formats, too, since conversion
       to jpeg may influence the measurement.

       The quality indicator is non-linear, and could be much better.

       The algorithm to calculate the quality was made up in 10 minutes, after staring at various
       histograms.

ACKNOWLEDGEMENTS

       This program contains code from the IJG jpeg software.

                              Jpegjudge - guess jpeg picture quality                 JPEGJUDGE(1)