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docs(env_reference): clarify OpenEXR optional support and security rationale

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steaphenai
2025-12-17 19:18:44 +05:30
committed by Alexander Smorkalov
parent 38979d15d5
commit d77e46eb6a
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doc/tutorials/introduction/env_reference/env_reference.markdown
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@@ -352,3 +352,7 @@ Some external dependencies can be detached into a dynamic library, which will be
| OPENCV_IO_MAX_IMAGE_PIXELS | num | 1 << 30 | |
| OPENCV_IO_ENABLE_OPENEXR | bool | true (set build option OPENCV_IO_FORCE_OPENEXR or use external OpenEXR), false (otherwise) | enable OpenEXR backend |
| OPENCV_IO_ENABLE_JASPER | bool | true (set build option OPENCV_IO_FORCE_JASPER), false (otherwise) | enable Jasper backend |
### Note
* OpenEXR support in OpenCV is optional. Source builds may include a bundled 3rdparty OpenEXR 2.3.0, but runtime support must be explicitly enabled via `OPENCV_IO_ENABLE_OPENEXR`. Users can also build OpenCV against a system-installed OpenEXR library.
* Support is disabled by default due to historical security considerations with malformed EXR files in older OpenEXR versions. Upgrading to OpenEXR 3.x is not a drop-in change and requires API and ABI adaptations.