idiff(1) - Linux man page

Title

idiff -- compare two images

Synopsis

Usage:  idiff [options] image1 image2

Description

This program is part of the OpenImageIO (http://www.openimageio.org) tool suite. Detailed documentation is avaliable in pdf format with the OpenImageIO distribution.

Options

--help

Print help message

-v

Verbose status messages

-a

Compare all subimages/miplevels

Thresholding and comparison options

-fail %g

Failure threshold difference (0.000001)

-failpercent %g

Allow this percentage of failures (0)

-hardfail %g

Fail if any one pixel exceeds this error (infinity)

-warn %g

Warning threshold difference (0.00001)

-warnpercent %g

Allow this percentage of warnings (0)

-hardwarn %g

Warn if any one pixel exceeds this error (infinity)

-p

Perform perceptual (rather than numeric) comparison

Difference image options

-o %s

Output difference image

-od

Output image only if nonzero difference

-abs

Output image of absolute value, not signed difference

-scale %g

Scale the output image by this factor