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	19147	March 4, 2022
Welcome to OpenCV Forum!	35	13895	February 10, 2024
CMAKE BUILD FAIL - openCV 4.9.0; CUDA 12.4; cuDNN 9.1.0; gcc 11.4 build , cuda	10	74	April 28, 2024
Status and usage of cudacodec::VideoWriter Python ffmpeg , cuda , videoio , cudacodec	17	92	April 28, 2024
About cv2.wechat_qrcode_WeChatQRCode GPU usage Python	1	21	April 28, 2024
Failing to detect a single contour of a chess board square C++	0	13	April 28, 2024
cuda::connectedComponents random label numbers? C++ cuda , imgproc	2	34	April 27, 2024
No Caffe Darknet frameworks in opencv 5.0 opencv-50	1	84	April 27, 2024
Getting images from one thread and process them in another thread Python multithreading , programming	2	37	April 27, 2024
Webcam-Livestream goes black after some minutes (randomly without any Error) Python	6	487	April 27, 2024
Matching perspective of a camera snapshot and a warped image Python calib3d , imgproc	1	42	April 27, 2024
Anti-aliased downscaling in opencv for ML preprocessing, is it possible? dnn , imgproc	12	55	April 26, 2024
I'm trying to use opencv to detect people on a video and count if that people crossed a horizontal line Python opencv_traincascade , tracking , objdetect	3	53	April 26, 2024
CharucoDetector.detectBoard returns NoneType Python aruco	3	83	April 25, 2024
Stereo rectification done wrong :( Python calib3d	0	35	April 24, 2024
Conda install opencv breaks the existing environment with torch and torchvision Python build , pytorch , conda	1	27	April 25, 2024
How to paste mat ROI using javascript Android/Java	0	58	April 16, 2024
How to find out if my image type is CV_8UC1 in opencv python and what are the other possible images types? Python	4	5946	April 25, 2024
Black Screen Issue in Android App Using OpenCV Android/Java	1	56	April 24, 2024
Unresolved External Symbol Error when building OpenCV on Windows with GStreamer C++ gstreamer , windows , build	0	33	April 24, 2024
Recognizing playing cards Python	0	44	April 24, 2024
Face Liveness Detection in OpenCV C++	1	51	April 24, 2024
In c++ cv::calibrateCamera doesn´t converge to the right solution but in python yes C++ calib3d	0	33	April 24, 2024
Undefined reference to `cv::CascadeClassifier::empty() const' C++ build	1	40	April 24, 2024
openCV on Jetson Nano python3.7 or 3.8 nvidia	0	39	April 23, 2024
Can't use moveWindow in Ubuntu 22.04 C++ highgui , wayland	5	65	April 23, 2024
Unable to Utilize SURF function in OpenCV after Manual Build Python build	9	56	April 23, 2024
cv2.stereoRectify works only when the rotation and translation are from camera 2 to camera 1 Python stereorectify	1	42	April 23, 2024
Converting Tenssorflow Js. Model to Regular Tensor Flow Model Python tensorflow , programming	1	30	April 22, 2024
Include OpenCV library to platformIO or Arduino IDE programming	1	33	April 22, 2024

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…