A simple Python based viewer for OpenEXR (.exr) files with annotation capabilities. I built this quickly as a prototype so I could figure out how to support and display OpenEXR in another app. It turned out to work well enough to share here for anyone who needs to support OpenEXR.
- View high dynamic range OpenEXR (.exr) images with proper tone mapping
- Draw and annotate directly on images
- Support for OpenEXR and PNG used by the animation industry
- Export annotated images back to OpenEXR or convert to PNG
- Simple and intuitive user interface
The application allows you to make annotations and notes directly on your images for:
- Marking areas of interest in HDR images
- Adding comments for collaborators
- Highlighting artifacts or areas for correction
- Creating visual guides and references
When displaying EXR images, the application uses the Reinhard tone mapping operator to convert high dynamic range content to a displayable range while preserving detail in both highlights and shadows.
If you need to add support for OpenEXR in your Python based app feel free to use the import and export code herewithin.
- Prerequisites
- Python 3.6 or higher
- PySide6 (Qt for Python)
- NumPy
- OpenImageIO
- Install dependencies
pip install pyside6 numpy openimageio
- Run the application
python openexr_viewer.py
This project is licensed under the Apache License Version 2.0.
OpenImageIO for EXR file support
Since this project uses PySide, it follows the LGPL requirements.