https://github.com/afichet/exr-diff
A very simple tool to generate Delta E 2000 image difference between two EXR files
https://github.com/afichet/exr-diff
cie-delta-e-2000 difference openexr
Last synced: 6 months ago
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A very simple tool to generate Delta E 2000 image difference between two EXR files
- Host: GitHub
- URL: https://github.com/afichet/exr-diff
- Owner: afichet
- License: bsd-3-clause
- Created: 2021-04-18T19:48:34.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2023-06-14T12:47:41.000Z (over 2 years ago)
- Last Synced: 2025-02-10T13:38:04.617Z (8 months ago)
- Topics: cie-delta-e-2000, difference, openexr
- Language: C++
- Homepage:
- Size: 93.8 KB
- Stars: 2
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# EXR Diff
This is a very simple tool to generate a Delta E 2000 image difference between two EXR files using D65 white achromatic reference illuminant (CIE 1931 2°).
It is meant to be compiled easily without any headache on any platform.
It is **not** meant to be fancy or bloated.
**Warning! This tool does not currently support:**
- **Custom chromaticities: chromaticities specified in the EXR header will be ignored. Rec 709 is assumed. If you're using any other colorspace, the resulting Delta E will not be correct.**
- **Luminance chrominance images.**
## Compilation
Clone the repository:
```bash
git clone https://github.com/afichet/exr-diff.git
cd exr-diff
```
After cloning the repository, ensure you have the submodule:
```bash
git submodule update --init --recursive
```
Then, you're ready to compile
```bash
mkdir build
cd build
cmake ..
make
```
You then can execute the program placed in `bin/`:
```bash
./bin/diff-exr
```
## Usage
### Basic usage:
This compute the Delta E 2000 between two EXR image, with the scale maxing to 10, no exposure compensation.
```bash
diff-exr -o
```
### Options
To see all available options, use `-h` without extra arguments.
## License
This tool uses the following Open Source libraries:
- TinyEXR https://github.com/syoyo/tinyexr
- LodePNG https://lodev.org/lodepng/
- TCLAP http://tclap.sourceforge.net/
It also uses the colormaps from https://bids.github.io/colormap/ by Nathaniel J. Smith, Stefan van der Walt, and (in the case of viridis) Eric Firing. These are licensed under CC0 license (http://creativecommons.org/publicdomain/zero/1.0/).
It is licensed under the 3-clause BSD license.