# \#opencv

**URL:** https://discourse.julialang.org/tag/opencv/1699.md

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## [\[ANN\] New version for CameraCalibrations](https://discourse.julialang.org/t/ann-new-version-for-cameracalibrations/131603)

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**Author:** [@yakir12](https://discourse.julialang.org/u/yakir12)\
**Replies:** 0\
**Last updated:** [August 14, 2025, 11:57am UTC](https://discourse.julialang.org/t/ann-new-version-for-cameracalibrations/131603 "2025-08-14T11:57:04Z")

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I’m happy to share that CameraCalibrations.jl, a Julia package for camera calibration, no longer relies on cv2 via PythonCall. Instead, it now directly uses OpenCV.jl for both checkerboard detection and camera model fitt…

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## [Histogram equalization with OpenCV](https://discourse.julialang.org/t/histogram-equalization-with-opencv/126421)

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**Author:** [@heliosdrm](https://discourse.julialang.org/u/heliosdrm)\
**Replies:** 2\
**Last updated:** [June 11, 2025, 11:42am UTC](https://discourse.julialang.org/t/histogram-equalization-with-opencv/126421 "2025-06-11T11:42:13Z")

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I am using OpenCV.jl for image processing and I want to increase the contrast of an image using adaptive histogram equalization. I can create the CLAHE object with OpenCV.createCLAHE, but that is an “C++ smart pointer of…

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## [Julia Opencv memory leak](https://discourse.julialang.org/t/julia-opencv-memory-leak/125839)

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**Author:** [@jcbritobr](https://discourse.julialang.org/u/jcbritobr)\
**Replies:** 8\
**Last updated:** [February 13, 2025, 6:11pm UTC](https://discourse.julialang.org/t/julia-opencv-memory-leak/125839 "2025-02-13T18:11:31Z")

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Hello. Good afternoon. Im using OpenCV.jl and Im facing a memory leak using video capture in this example. May someone help? julia 1.11.3 Win x64 using OpenCV cap = OpenCV.VideoCapture(0) if !OpenCV.isOpene…

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## [PythonCall.pyimport opencv on Windows](https://discourse.julialang.org/t/pythoncall-pyimport-opencv-on-windows/124146)

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**Author:** [@yakir12](https://discourse.julialang.org/u/yakir12)\
**Replies:** 4\
**Last updated:** [December 26, 2024, 3:42pm UTC](https://discourse.julialang.org/t/pythoncall-pyimport-opencv-on-windows/124146 "2024-12-26T15:42:22Z")

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I’m trying to PythonCall.pyimport opencv on Windows: const cv2 = PythonCall.pynew() function \_\_init\_\_() PythonCall.pycopy!(cv2, pyimport("cv2")) end but I run into Python: ImportError: DLL load failed while import…

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## [OpenCV function signatures](https://discourse.julialang.org/t/opencv-function-signatures/123145)

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**Author:** [@yakir12](https://discourse.julialang.org/u/yakir12)\
**Replies:** 1\
**Last updated:** [December 3, 2024, 12:10pm UTC](https://discourse.julialang.org/t/opencv-function-signatures/123145 "2024-12-03T12:10:02Z")

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I’m trying to use the camera calibration functions in OpenCV.jl, but I can’t create arguments that would fit some of the functions’ signatures. For example one of OpenCV.calibrateCamera’s method signatures is: OpenCV.c…