OpenEXR
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# OpenEXR

OpenEXR provides the specification and reference implementation of the EXR file format, the professional-grade image storage format of the motion picture industry.

The purpose of EXR format is to accurately and efficiently represent high-dynamic-range scene-linear image data and associated metadata, with strong support for multi-part, multi-channel use cases.

OpenEXR is widely used in host application software where accuracy is critical, such as photorealistic rendering, texture access, image compositing, deep compositing, and DI.

OpenEXR is a project of the Academy Software Foundation.

## Imath

The OpenEXR project includes Imath, a basic, light-weight, and efficient C++ representation of 2D and 3D vectors and matrices and other simple but useful mathematical objects, functions, and data types common in computer graphics applications, including the half 16-bit floating-point type.

Imath also includes optional python bindings for all types and functions, including optimized implementations of vector and matrix arrays.

## Quick Start

For a simple program that uses the C++ API to read and write a `.exr` file, see the Hello, World examples.

## Community

- Ask a question:

  - Email: openexr-dev@lists.aswf.io

  - Slack: academysoftwarefdn#openexr

- Attend a meeting:

  - Technical Steering Committee meetings are open to the public, fortnightly on Thursdays, 1:30pm Pacific Time.

  - Calendar: https://lists.aswf.io/g/openexr-dev/calendar

- Report a bug:

  - Submit an Issue: https://github.com/AcademySoftwareFoundation/openexr/issues

- Report a security vulnerability:

  - Email security@openexr.com

- Contribute a Fix, Feature, or Improvement:

  - Read the Contribution Guidelines and Code of Conduct

  - Sign the Contributor License Agreement

  - Submit a Pull Request: https://github.com/AcademySoftwareFoundation/openexr/pulls

## Resources

- Reference images: https://github.com/AcademySoftwareFoundation/openexr-images

- Security policy: SECURITY.md

- Release notes: CHANGES.md

- Contributors: CONTRIBUTORS.md

- Porting Guide: OpenEXR/Imath 2.x to 3.x Porting Guide

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