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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	25509	February 26, 2021
Old Askbot Forum Link This forum replaces the Askbot answers section. Please use this forum for any new topics, discussions, or questions. If you need to access answers from the previous forum before posting a new question, you can find that…	0	762	December 3, 2020
Welcome to OpenCV Forum!	33	17495	February 10, 2024
Opencv 5 with onnx qustions dnn , onnx	0	14	October 2, 2026
How reliable is image matching after compression and resizing?	0	15	October 1, 2026
Why is the operation `S0 >> 4` performed when the `resize` function takes `u8` input and a scalar for the V-direction? Since `int32` would not overflow in the scalar case, why is this operation still necessary? imgproc	4	67	September 25, 2026
PSA: CascadeClassifier with a missing file does not raise, it fails later in detectMultiScale	1	27	September 22, 2026
Toolbar Definition highgui , programming	0	29	September 21, 2026
Image preprocessing for OCR on glossy, curved and unevenly illuminated packaging programming	2	67	September 18, 2026
Computer Vision Task programming	1	99	September 18, 2026
How are world coordinates and extrinsic parameters defined in camera_calibration.cpp? calib3d	1	63	September 11, 2026
Question regarding GSoC gsoc	0	42	September 6, 2026
Microscope/Telephoto Camera Calibration calib3d	4	101	September 3, 2026
Multi-View CCTV Pallet Counting: Resolving Interlocking Layer Occlusion via Calibrated Ground Plane & Homography	0	41	September 2, 2026
Using OpenCV with Embarcadero Delphi 10.3.3 (Object Pascal) delphi , pascal	12	7366	August 22, 2026
Get a Point Cloud from only one Image calib3d	0	80	August 17, 2026
Looking to contribute to OpenCV — GSoC 2027 aspirant gsoc	1	117	August 7, 2026
Eye To Hand Calibration Using LeRobot calib3d	2	553	July 15, 2026
EU AI Act compliance legal	2	133	July 10, 2026
Training data / provenance of the res10 SSD face detector dnn , legal	0	98	July 10, 2026
Homography-based master/slave PTZ camera sync — is this the right approach? homography	1	127	July 2, 2026
Build OpenCV 5 with CMake failed build	3	220	July 1, 2026
Wide-baseline stereo on circles grid, enormous stereo RMS calib3d , calib	11	182	June 26, 2026
Microsoft made std::mutex constexpr in the STL for VS17.10 and later windows , build	1	84	June 24, 2026
Calculation of pipe dimensions, pipe geometry segmentation	1	105	June 17, 2026
ArUco detection on macOS (AVFoundation → OpenCV 4) intermittently returns no markers — sanity check on params/pipeline? aruco	4	94	June 17, 2026
Matchtemplate SQDIFF has minValue != 0 for identical image/template imgproc	4	94	May 29, 2026
Stereo Calibration: Very high radial distortion coefficients calib3d	3	65	May 26, 2026
Why doesn't OpenCV officially compile the OpenVINO version anymore?	0	56	May 25, 2026
How to distinguish exterior wall outline lines from hatch, dimension, and view-crop lines in architectural elevation PDFs?	4	95	May 11, 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…

0

25509

February 26, 2021

Old Askbot Forum Link

This forum replaces the Askbot answers section. Please use this forum for any new topics, discussions, or questions. If you need to access answers from the previous forum before posting a new question, you can find that…

0

762

December 3, 2020

Welcome to OpenCV Forum!