NAME

       butteraugli - measuring perceived differences between images

SYNOPSYS

       butteraugli {image1.(png|jpg|jpeg)} {image2.(png|jpg|jpeg)} [heatmap.ppm]

DESCRIPTION

       Butteraugli is a project that estimates the psychovisual similarity of two images. It
       gives a score for the images that is reliable in the domain of barely noticeable
       differences. Butteraugli not only gives a scalar score, but also computes a spatial map of
       the level of differences.

       One of the main motivations for this project is the statistical differences in location
       and density of different color receptors, particularly the low density of blue cones in
       the fovea. Another motivation comes from more accurate modeling of ganglion cells,
       particularly the frequency space inhibition.

AUTHOR

       This manual page was written by ChangZhuo Chen <czchen@debian.org> for the Debian
       GNU/Linux system (but may be used by others).

                                            03/22/2020                             BUTTERAUGLI(1)