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	25219	February 26, 2021
Welcome to OpenCV Forum!	33	17191	February 10, 2024
Using OpenCV with Embarcadero Delphi 10.3.3 (Object Pascal) delphi , pascal	11	7164	June 12, 2026
Calculation of pipe dimensions, pipe geometry segmentation	0	24	June 11, 2026
Fine tuning image selctions Python ocr	1	31	June 9, 2026
cv::VideoCapture.read(frame) with CAP FFMPEG and hardware acceleration adds two black lines C++ videoio	0	31	June 8, 2026
Laser pattern rangefinding using a diffraction grating Python calib3d , raspberrypi	10	102	June 7, 2026
OpenCV Raspicam Ubuntu 24 Server Python raspberrypi , video-streaming	2	43	June 5, 2026
Can't Read YUV HDMI IN with VideoCapture Python videoio	5	57	June 2, 2026
AR rock climbing wall Python	3	91	May 30, 2026
Matchtemplate SQDIFF has minValue != 0 for identical image/template imgproc	4	39	May 29, 2026
Introducing PureCV: A Pure Rust Port of OpenCV Projects rust	4	382	May 29, 2026
Stereo Calibration: Very high radial distortion coefficients calib3d	3	39	May 26, 2026
Why doesn't OpenCV officially compile the OpenVINO version anymore?	0	31	May 25, 2026
cv::VideoCapture.isOpen() returns TRUE even on some errors (bug?) C++ videoio	1	46	May 19, 2026
Opencv camera calibration C++ calib3d	5	171	May 19, 2026
Can't read mp4 on alma linux ( = RHEL) system C++ videoio	4	55	May 19, 2026
Computer Vision Task programming	0	45	May 16, 2026
ArUco relative displacement measurement between markers - precision issues when object rotates C++ aruco	5	71	May 15, 2026
OpenCV with CUDA for C++ help C++ build , cuda	0	81	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	245	May 9, 2026
Inaccurate metrology measurements in OpenCV orthomosaic from three 48MP cameras Python	1	62	May 8, 2026
Failed to parse ONNX model C++ dnn , onnx	3	59	May 6, 2026
[Help] Struggling to detect pool pockets and place these pockets in live video Projects calib3d , homography , feature-detection , imgproc	5	134	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
Relative position of two ArUco markers Python calib3d , aruco	2	58	May 5, 2026
OpenCV CMake config file sets OpenCV_FOUND to FALSE C++ build , cmake , cuda	0	41	April 30, 2026
Looking to contribute to OpenCV — GSoC 2027 aspirant with C++ background C++ gsoc	0	19	April 30, 2026
KNN background subtraction algorithm C++	6	82	April 22, 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…