---
name: "exrchr"
section: "1"
platform: "linux"
package: "exrtools"
version: "0.4-1.2+b2"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/exrchr"
---

# exrchr(1)

apply chromatic adaptation to an OpenEXR image

## NAME

exrchr - apply chromatic adaptation to an OpenEXR image

## SYNOPSIS

**exrchr** input.exr blur.exr output.exr degree\_of\_adaptation

## DESCRIPTION

Applies chromatic adaptation on the given input file using a per-pixel whitepoint from the file blur.exr.  The degree of adaptation is specified on the command line, and should be in the range \[0,1\] where 1 means fully adapted to the white point.

Chromatic adaptation is performed using the space and transform from the CIECAM02 colour appearance model.

## AUTHORS

Billy Biggs \<vektor@dumbterm.net\>.

## SEE ALSO

[**exrtools**(1)](/exrtools/1.md).