https://www.slicer.org/w/index.php?action=history&feed=atom&title=Documentation%2F4.6%2FExtensions%2FOpenCVExampleDocumentation/4.6/Extensions/OpenCVExample - Revision history2026-05-09T02:06:59ZRevision history for this page on the wikiMediaWiki 1.33.0https://www.slicer.org/w/index.php?title=Documentation/4.6/Extensions/OpenCVExample&diff=47691&oldid=prevUpdateBot: Nightly -> 4.62016-11-07T07:12:10Z<p>Nightly -> 4.6</p>
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{{documentation/{{documentation/version}}/module-section|Introduction and Acknowledgements}}<br />
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Extension: [[Documentation/{{documentation/version}}/Extensions/OpenCVExample|OpenCVExample]]<br><br />
Acknowledgments:<br />
This work was supported by a supplement to the Quantitative Image Informatics project via the NIH-National Cancer Institute Grant U24 CA180918-03 as well as U24 CA180924 Tools to Analyze Morphology and Spatially Mapped Molecular Data with Stony Brook University.<br><br />
Author: Nicole Aucoin ({{collaborator|name|spl}})<br><br />
Contact: Nicole Aucoin, <email>nicole@bwh.harvard.edu</email><br><br />
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[[File:OpenCVExample.png|x200px]]<br />
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This extension provides an example on how to build and run against the OpenCV package provided by the <br />
[[Documentation/{{documentation/version}}/Extensions/SlicerOpenCV | SlicerOpenCV extension]]. [http://opencv.org/ OpenCV] (Open Source Computer Vision Library) is an open source computer vision and machine learning software library.<br />
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This extension includes a C++ CLI module that loads, operates on, and saves PNG images.<br />
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* This module can be used as a template by extension developers who wish to use the algorithms provided by [http://opencv.org OpenCV].<br />
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The ExampleOpenCV extension provides the [[Documentation/{{documentation/version}}/Extensions/BlendVectorVolumes|Blend Vector Volumes]] CLI as a stand alone module, but the extension does not provide an overall GUI.<br />
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The [https://github.com/SBU-BMI/SlicerPathology Slicer Pathology] extension also uses the [[Documentation/{{documentation/version}}/Extensions/SlicerOpenCV | SlicerOpenCV extension]].<br />
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* [http://qiicr.org Quantitative Image Informatics for Cancer Research (QIICR)]<br />
* [http://opencv.org Open Source Computer Vision]<br />
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Use this extension as a template on how to include OpenCV provided by the SlicerOpenCV module.<br />
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In your extension's top level CMakeList.txt:<br />
* Specify that it depends on SlicerOpenCV:<br />
set(EXTENSION_DEPENDS "SlicerOpenCV")<br />
* Include the SlicerOpenCV extension by including this line after the find_package for Slicer:<br />
find_package(SlicerOpenCV REQUIRED)<br />
* If you're building from a locally built version of SlicerOpenCV, SlicerOpenCV_DIR is set to the inner-build sub-directory of the SlicerOpenCV build directory.<br />
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In your extension's module CMakeLists.txt file:<br />
* Define OpenCV_DIR by finding the package that SlicerOpenCV provided:<br />
find_package(OpenCV 3.1 REQUIRED)<br />
* The header include path is defined as:<br />
get_filename_component(OpenCV_INCLUDE_DIR ${OpenCV_DIR}/../../include ABSOLUTE)<br />
* Add ${OpenCV_INCLUDE_DIR} to the MODULE_INCLUDE_DIRECTORIES list<br />
* Link against the OpenCV libraries by adding ${OpenCV_LIBS} to the MODULE_TARGET_LIBRARIES<br />
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