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[](https://en.wikipedia.org/wiki/C%2B%2B#Standardization)
[](https://opensource.org/licenses/BSL-1.0)
[](http://boostorg.github.com/gil/)
[](https://github.com/boostorg/gil/wiki)
[](https://lists.boost.org/mailman/listinfo.cgi/boost-gil)
[](https://gitter.im/boostorg/gil)
[](https://wandbox.org/permlink/isNgnMuqWcqTqzy7)
[](https://bintray.com/bincrafters/public-conan/boost_gil%3Abincrafters)
[](https://github.com/Microsoft/vcpkg/tree/master/ports/boost-gil)
Documentation | AppVeyor | Azure Pipelines | Travis CI | CircleCI | Regression
--------------|-----------------|-----------------|-----------------|-----------------|------------
[](https://boostorg.github.io/gil/develop/) | [](https://ci.appveyor.com/project/stefanseefeld/gil/branch/develop) | [](https://dev.azure.com/boostorg/gil/_build/latest?definitionId=4?branchName=develop) | [](https://travis-ci.org/boostorg/gil) | [](https://circleci.com/gh/boostorg/workflows/gil/tree/develop) | [](http://www.boost.org/development/tests/develop/developer/gil.html)
[](https://boostorg.github.io/gil/) | [](https://ci.appveyor.com/project/stefanseefeld/gil/branch/master) | [](https://dev.azure.com/boostorg/gil/_build/latest?definitionId=4?branchName=master) | [](https://travis-ci.org/boostorg/gil) | [](https://circleci.com/gh/boostorg/workflows/gil/tree/master) | [](http://www.boost.org/development/tests/master/developer/gil.html)
# Boost.GIL
- [Introduction](#introduction)
- [Documentation](#documentation)
- [Requirements](#requirements)
- [Branches](#branches)
- [Community](#community)
- [Contributing](#contributing-we-need-your-help)
- [License](#license)
## Introduction
Boost.GIL is a part of the [Boost C++ Libraries](http://github.com/boostorg).
The Boost Generic Image Library (GIL) is a **C++11** library that abstracts image
representations from algorithms and allows writing code that can work on a
variety of images with performance similar to hand-writing for a specific image type.
## Documentation
- [Latest release](https://boost.org/libs/gil)
- [Branch master](http://boostorg.github.io/gil/) (latest release with minor changes)
- [Branch develop](http://boostorg.github.io/gil/develop/)
See [RELEASES.md](RELEASES.md) for release notes.
See [CONTRIBUTING.md](CONTRIBUTING.md) for instructions about how to build and
run tests and examples using Boost.Build or CMake.
See [example/README.md](example/README.md) for GIL usage examples.
See [example/b2/README.md](example/b2/README.md) for Boost.Build configuration examples.
See [example/cmake/README.md](example/cmake/README.md) for CMake configuration examples.
## Requirements
**NOTE:** The library source code is currently being modernized for C++11.
The Boost Generic Image Library (GIL) requires:
- C++11 compiler (GCC 4.9, clang 3.3, MSVC++ 14.0 (1900) or any later version)
- Boost header-only libraries
Optionally, in order to build and run tests and examples:
- Boost.Filesystem
- Boost.Test
- Headers and libraries of libjpeg, libpng, libtiff, libraw for the I/O extension and some of examples.
## Branches
The official repository contains the following branches:
- [**master**](https://github.com/boostorg/gil/tree/master) This
holds the most recent snapshot with code that is known to be stable.
- [**develop**](https://github.com/boostorg/gil/tree/develop) This
holds the most recent snapshot. It may contain unstable code.
## Community
There is number of communication channels to ask questions and discuss Boost.GIL issues:
- Mailing lists ([Boost discussion policy](https://www.boost.org/more/discussion_policy.html))
- [boost-gil](https://lists.boost.org/mailman/listinfo.cgi/boost-gil) (*recommended*) official Boost.GIL mailing list ([archive](https://lists.boost.org/boost-gil/))
- [boost-users](https://lists.boost.org/mailman/listinfo.cgi/boost-users) for all Boost users
- [boost](https://lists.boost.org/mailman/listinfo.cgi/boost) for all Boost developers
- Slack at [cpplang.slack.com](https://cppalliance.org/slack/) with Boost channels:
- [\#boost-gil](https://cpplang.slack.com/archives/CSVT0STV2) (*recommended*) official Boost.GIL channel
- [\#boost-user](https://cpplang.slack.com/messages/CEWTCFDN0/) for all Boost users
- [\#boost](https://cpplang.slack.com/messages/C27KZLB0X/) for all Boost developers
- Gitter room [boostorg/gil](https://gitter.im/boostorg/gil) (old real-time chat space)
- You can also ask questions via GitHub issue.
## Contributing (We Need Your Help!)
If you would like to contribute to Boost.GIL, help us improve the library
and maintain high quality, there is number of ways to do it.
If you would like to test the library, contribute new feature or a bug fix,
see the [CONTRIBUTING.md](CONTRIBUTING.md) where the whole development
infrastructure and the contributing workflow is explained in details.
You may consider performing code reviews on active
[pull requests](https://github.com/boostorg/gil/pulls) or help
with solving reported issues, especially those labelled with:
- [status/need-help](https://github.com/boostorg/gil/labels/status%2Fneed-help)
- [status/need-feedback](https://github.com/boostorg/gil/labels/status%2Fneed-feedback)
- [need-minimal-example](https://github.com/boostorg/gil/labels/status%2Fneed-minimal-example)
Any feedback from users and developers, even simple questions about how things work
or why they were done a certain way, carries value and can be used to improve the library.
## License
Distributed under the [Boost Software License, Version 1.0](http://www.boost.org/LICENSE_1_0.txt).
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