perceptualdiff1
Perceptual image comparison tool
Usage
perceptualdiff [options]
image1
image2
Overview
Compares image1 and image2 using a perceptually based image metric. Images can be in any FreeImage-supported format: TIF, PNG, etc.
Options
-
--verbose -
Turn on verbose mode
-
--fov deg -
Field of view in degrees [0.1, 89.9] (default: 45.0)
-
--threshold p -
Number of pixels p below which differences are ignored
-
--gamma g -
Value to convert rgb into linear space (default: 2.2)
-
--luminance l -
White luminance (default: 100.0 cdm^-2)
-
--luminance-only -
Only consider luminance; ignore chroma (color) in the comparison
-
--color-factor -
How much of color to use [0.0, 1.0] (default: 1.0)
-
--down-sample -
How many powers of two to down sample the image (default: 0)
-
--scale -
Scale images to match each other's dimensions
-
--sum-errors -
Print a sum of the luminance and color differences
-
--output o -
Write difference to the file o
-
--version -
Print version
OpenMP status: enabled
Releases
8 releases since Debian 5.0 (Lenny); the text changed 2 times.
--color-factor since Debian 13 (Trixie);
--down-sample since Debian 13 (Trixie);
--fov since Debian 13 (Trixie);
--gamma since Debian 13 (Trixie);
--luminance since Debian 13 (Trixie);
--luminance-only since Debian 13 (Trixie);
--output since Debian 13 (Trixie);
--scale since Debian 13 (Trixie);
--sum-errors since Debian 13 (Trixie);
--threshold since Debian 13 (Trixie);
--verbose since Debian 13 (Trixie);
--version since Debian 13 (Trixie).
-fov until Debian 11 (Bullseye);
-gamma until Debian 11 (Bullseye);
-luminance until Debian 11 (Bullseye);
-output until Debian 11 (Bullseye);
-threshold until Debian 11 (Bullseye);
-verbose until Debian 11 (Bullseye).