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…	0	25227	February 26, 2021
Welcome to OpenCV Forum!	33	17201	February 10, 2024
Calculation of pipe dimensions, pipe geometry segmentation	1	34	June 17, 2026
ArUco detection on macOS (AVFoundation → OpenCV 4) intermittently returns no markers — sanity check on params/pipeline? aruco	4	22	June 17, 2026
Real-Time Detection of Vertical Tongue Movements via Mobile Camera — Choosing the Right Approach Python	1	21	June 17, 2026
Pip install opencv-python (still in old version) Python	1	24	June 17, 2026
Build OpenCV 5 with CMake failed build	0	14	June 17, 2026
Using OpenCV with Embarcadero Delphi 10.3.3 (Object Pascal) delphi , pascal	11	7171	June 12, 2026
Fine tuning image selctions Python ocr	1	35	June 9, 2026
cv::VideoCapture.read(frame) with CAP FFMPEG and hardware acceleration adds two black lines C++ videoio	0	34	June 8, 2026
Laser pattern rangefinding using a diffraction grating Python calib3d , raspberrypi	10	114	June 7, 2026
OpenCV Raspicam Ubuntu 24 Server Python raspberrypi , video-streaming	2	47	June 5, 2026
Can't Read YUV HDMI IN with VideoCapture Python videoio	5	58	June 2, 2026
AR rock climbing wall Python	3	93	May 30, 2026
Matchtemplate SQDIFF has minValue != 0 for identical image/template imgproc	4	41	May 29, 2026
Introducing PureCV: A Pure Rust Port of OpenCV Projects rust	4	388	May 29, 2026
Stereo Calibration: Very high radial distortion coefficients calib3d	3	40	May 26, 2026
Why doesn't OpenCV officially compile the OpenVINO version anymore?	0	32	May 25, 2026
cv::VideoCapture.isOpen() returns TRUE even on some errors (bug?) C++ videoio	1	48	May 19, 2026
Opencv camera calibration C++ calib3d	5	172	May 19, 2026
Can't read mp4 on alma linux ( = RHEL) system C++ videoio	4	55	May 19, 2026
Computer Vision Task programming	0	46	May 16, 2026
ArUco relative displacement measurement between markers - precision issues when object rotates C++ aruco	5	72	May 15, 2026
OpenCV with CUDA for C++ help C++ build , cuda	0	86	May 12, 2026
How to distinguish exterior wall outline lines from hatch, dimension, and view-crop lines in architectural elevation PDFs?	4	55	May 11, 2026
OpenCV 4.12.0 CMake Shows freetype2: NO / harfbuzz: NO (vcpkg, VS2022, Windows 11) C++ windows , build , freetype , vcpkg	1	248	May 9, 2026
Inaccurate metrology measurements in OpenCV orthomosaic from three 48MP cameras Python	1	63	May 8, 2026
Failed to parse ONNX model C++ dnn , onnx	3	61	May 6, 2026
[Help] Struggling to detect pool pockets and place these pockets in live video Projects calib3d , homography , feature-detection , imgproc	5	137	May 5, 2026
Show HN: I built a zero-luck board game. Now I need a CV engineer to help run the rules Gigs and Jobs	0	43	May 5, 2026

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…