OpenCV

Topic	Replies	Views	Activity
Useful Links (Read First!) Before asking a question in the forum, check out some of these resources and see if you can find a common answer. Documentation Tutorials Super Helpful Wiki Bugs and Issues Here are some additional useful links. Of…	2	24534	March 4, 2022
Welcome to OpenCV Forum!	34	16660	August 10, 2024
Making a desktop app using opencv in java/kotlin on Linux (Ubuntu) Android/Java build	0	1	December 6, 2025
Matchtemplate() with masks on CUDA CPU Android/Java cuda	1	12	December 5, 2025
[GSoC 2026] RISC-V Optimizations for DNN Module (Starting with Winograd/Winograd63) dnn , gsoc , riscv	2	4	December 5, 2025
Detecting the edges of striped fabric on a chessboard Python edge-detection , calib3d	7	72	December 4, 2025
Iterative Phase Correlation PR C++ imgproc	1	18	December 1, 2025
Multi-camera OpenCV project. camera indices change Python	0	32	November 26, 2025
(solved)CMake error while following instructions - fatal error C1083: Cannot open include file: 'numpy/ndarrayobject.h': No such file or directory Python build	0	26	November 25, 2025
Detect a very low contrast cracks on the egg shell	1	34	November 25, 2025
findFile() Cannot find sample image C++ samples	2	46	November 23, 2025
Stitching without Image Transforming stitching	5	44	November 20, 2025
Does waitKey does not show image when socket is used? Python programming	0	25	November 20, 2025
Problem displaying image on second monitor Python	0	19	November 19, 2025
calibrateHandEye and calibrateRobotWorldHandEye with 3 dof camera on hand calib3d	1	46	November 18, 2025
Help with the method of expanding black and white background text imgproc	2	34	November 17, 2025
Improvement in HDR Tutorial – Clarifying Gamma Correction (Fix for Issue #22219) Projects documentation , build , gsoc	1	50	October 22, 2025
Recommendations for opens source facial tracking	0	10	November 15, 2025
How would i merge images to make 1 longer image comprised of the 2 C++	1	30	November 13, 2025
When will OpenCV support Python 3.14 version, since this version has removed the GIL? Python py-free-threading	4	266	November 13, 2025
Can I copy or relocate OpenCV GPU support to another windows 11 computer?	1	57	November 7, 2025
Eye To Hand Calibration Using LeRobot calib3d	0	84	November 7, 2025
Valgrind reports TLS memory leaks on threads joined before OpenCV thread pool is even initialized C++ valgrind , leaks	0	27	November 6, 2025
Install and configure OpenCV for python/anaconda with GPU support on windows 11 Python windows , build , cuda	13	5867	November 6, 2025
Issue calibrating fisheye camera (-215:Assertion failed) fabs(norm_u1) > 0 in function 'InitExtrinsics' Python calib3d , fisheye	7	4122	November 5, 2025
What Constitutes a Good Calibration and Acceptable Variance? calib3d	4	67	November 4, 2025
No java so (shared object) with docker build of custom modules Android/Java build	1	50	November 3, 2025
Canny cannot detect valid edges against similar backgrounds Python threshold , imgproc	1	69	November 3, 2025
[MinGW64 on Win11]Failed to build OpenCV-Python-headless via pip install Python mingw , build , pip , msys2	4	137	November 1, 2025
OpenCV cannot access to UVC camera properties Python videoio	8	87	October 29, 2025

Useful Links (Read First!)

Before asking a question in the forum, check out some of these resources and see if you can find a common answer. Documentation Tutorials Super Helpful Wiki Bugs and Issues Here are some additional useful links. Of…