PerceptualDiff was desighned to be an image comparison utility that makes use of a computational model of the human visual system to compare two images.
perceptualdiff image1.(tif | png) image2.(tif | png) [options]
- verbose : Turns on verbose mode
- fov deg: field of view, deg, in degrees. Usually between 10.0 to 85.0.
This controls how much of the screen the oberserver is seeing. Front row of a theatre has a field of view of around 25 degrees. Back row has a field of view of around 60 degrees.
- threshold p : Sets the number of pixels, p, to reject. For example if p is 100, then the test fails if 100 or more pixels are perceptably different.
- gamma g : The gamma to use to convert to RGB linear space. Default is 2.2
- luminance l: The luminance of the display the observer is seeing. Default is 100 candela per meter squared
- output foo.ppm : Saves the difference image to foo.ppm
PerceptualDiff is not available for Windows Portable (click here to submit it!)
PerceptualDiff is not available for Handheld
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