OpenCV - Ask OpenCV Questions, Get OpenCV Answers
Jul 3, 2025 · OpenCV (Open Source Computer Vision Library) is an open source computer vision and machine learning (AI) software library.
OpenCV
May 14, 2025 · OpenCV (Open Source Computer Vision Library) is an open source computer vision and machine learning (AI) software library.
Missing lib files while building with Visual Studio 2022 - build
Nov 13, 2024 · I tried to build OpenCV but Visual Studio only created 3 files in the /build/lib/release folder: opencv_cudev4100.exp opencv_cudev4100.lib opencv_ts4100.lib and there are a whole bunch of LINK1181 messages about the rest of the .lib files which are missing as well as a lot of MSB8066 ‘custom build exited with code 1’ errors, as well as a few C1189 …
Android/Java - OpenCV
Jan 4, 2021 · This category’s purpose is for questions and discussions about OpenCV on the Android and/or Java. Please limit discussion to OpenCV related topics, such as build errors, customization, optimization, and performance related to Android/Java. Other topics, such as general discussion of Android or Java features, benefits, and news should NOT be posted to …
Mutlti Threads Not working - Python - OpenCV
Jun 1, 2022 · Newbee question. I try to screenshot multiple rtsp streams using threads. unfortunately it seems that opencv only handle one stream at the time ex; def mutiple_threads() # run x 100 threads cap = cv2.VideoCapture(stream) ret, frame = cap.read() cv2.imwrite(pathtosave, frame) only one opencv is running and blocking the rest from the …
CUDA Decoder issues - Python - OpenCV
Mar 14, 2025 · I am trying to build OpenCV with CUDA support, it worked but now I wanted to add cudacodec as well, however I am having issues with installing the NVIDIA Video Codec SDK and get errors for the headers and libraries. I am building it on a Modal Image (similar to docker) for Cloud GPU use, so if anyone has any suggestions on how to get it working I’d be thankful. I …
C++ - OpenCV
Feb 26, 2021 · The C++ Category is for OpenCV C++ questions. It should not contain discussion of general C++ topics.
OpenCV read image error - C++ - OpenCV
Oct 21, 2024 · My system is windows11 and opencv is 4.10. And I have tried 65001 UTF-8 encoding, it still has the problem. 1003×304 29.1 KB
Pixel upscaling algorithms? - OpenCV
Sep 20, 2022 · Probably the simplest and fastest upscaling algorithm is the Lanczos filter: resize(low_res_image, large_image, Size(), scale, scale, INTER_LANCZOS4); Note that the best algorithm depends on the application. Pixel art upscaling works mostly on pixel art (with limited color palette and large areas of the same color). Here’s a tutorial implementing and comparing …
Build fails during compilation of cudaimgproc - build - OpenCV
Dec 31, 2024 · Hello, I am trying to compile opencv-4.10.0 from source but I am running into a sudden failure during compilation. Below is at the point where make suddenly fails: [ 66%] Built target opencv_text [ 67%] Building CXX ob…