idiff - 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 available in pdf format with the OpenImageIO distribution.

Options

--help

Print help message

-v

Verbose status messages

-q

Quiet (minimal messages)

-a

Compare all subimages/miplevels

Thresholding and comparison options

-fail VAL

Failure threshold difference (default: 1e-06)

-failpercent PERCENT

Allow this percentage of failures (default: 0)

-hardfail VAL

Fail if any one pixel exceeds this error (default: inf)

-warn VAL

Warning threshold difference (default: 1e-06)

-warnpercent PERCENT

Allow this percentage of warnings (default: 0)

-hardwarn VAL

Warn if any one pixel exceeds this error (default: inf)

-p

Perform perceptual (rather than numeric) comparison

Difference image options

-o FILENAME

Output difference image

-od

Output image only if nonzero difference

-abs

Output image of absolute value, not signed difference

-scale FACTOR

Scale the output image by this factor (default: 1)

Info

02 February 2021 OpenImageIO