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	24481	March 4, 2022
Welcome to OpenCV Forum!	34	16610	August 10, 2024
Multi-camera OpenCV project. camera indices change Python	0	2	November 26, 2025
(solved)CMake error while following instructions build	0	7	November 25, 2025
Detect a very low contrast cracks on the egg shell	1	18	November 25, 2025
findFile() Cannot find sample image C++ samples	2	35	November 23, 2025
Detecting the edges of striped fabric on a chessboard Python edge-detection , calib3d	3	26	November 23, 2025
Stitching without Image Transforming stitching	5	32	November 20, 2025
Does waitKey does not show image when socket is used? Python programming	0	15	November 20, 2025
Problem displaying image on second monitor Python	0	14	November 19, 2025
calibrateHandEye and calibrateRobotWorldHandEye with 3 dof camera on hand calib3d	1	39	November 18, 2025
Help with the method of expanding black and white background text imgproc	2	26	November 17, 2025
Improvement in HDR Tutorial – Clarifying Gamma Correction (Fix for Issue #22219) Projects documentation , build , gsoc	1	44	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	22	November 13, 2025
When will OpenCV support Python 3.14 version, since this version has removed the GIL? Python py-free-threading	4	162	November 13, 2025
Can I copy or relocate OpenCV GPU support to another windows 11 computer?	1	50	November 7, 2025
Eye To Hand Calibration Using LeRobot calib3d	0	73	November 7, 2025
Valgrind reports TLS memory leaks on threads joined before OpenCV thread pool is even initialized C++ valgrind , leaks	0	21	November 6, 2025
Install and configure OpenCV for python/anaconda with GPU support on windows 11 Python windows , build , cuda	13	5830	November 6, 2025
Issue calibrating fisheye camera (-215:Assertion failed) fabs(norm_u1) > 0 in function 'InitExtrinsics' Python calib3d , fisheye	7	4093	November 5, 2025
What Constitutes a Good Calibration and Acceptable Variance? calib3d	4	59	November 4, 2025
No java so (shared object) with docker build of custom modules Android/Java build	1	34	November 3, 2025
Canny cannot detect valid edges against similar backgrounds Python threshold , imgproc	1	57	November 3, 2025
[MinGW64 on Win11]Failed to build OpenCV-Python-headless via pip install Python mingw , build , pip , msys2	4	63	November 1, 2025
OpenCV cannot access to UVC camera properties Python videoio	8	63	October 29, 2025
CANN RESIZE function supports Python imgproc	1	20	October 29, 2025
Trouble building a FULL version of OpenCV (C++) with open source QT5 C++ build	6	54	October 28, 2025
SfM + Wheeld Robot's Odometry: scene resonstruction issues C++ sfm , triangulatepoints , ros	0	18	October 28, 2025
How properly to wrap OpenCV APIs that take cv::InputArray/cv::OutputArray/cv::InputOutputArray for P/Invoke (C#) C++ csharp	6	93	October 28, 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…