NAME
idiff -- compare two images
SYNOPSIS
Usage: idiff [options] <image1> <image2 | directory>
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
- --version
-
Print version and exit
- -v
-
Verbose status messages
- -q
-
Quiet (minimal messages)
- -a
-
Compare all subimages/miplevels
Thresholding and comparison options
- -fail VAL
-
Failure absolute difference threshold (default: 1e-06)
- -failrelative VAL
-
Failure relative threshold (default: 0)
- -failpercent PERCENT
-
Allow this percentage of failures (default: 0)
- -hardfail VAL
-
Fail if any one pixel exceeds this error (default: inf)
- -allowfailures N
-
OK for this number of pixels to fail by any amount (default: 0)
- -warn VAL
-
Warning absolute difference threshold (default: 1e-06)
- -warnrelative VAL
-
Warning relative threshold (default: 0)
- -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)