OpenCV - Ask OpenCV Questions, Get OpenCV Answers
Oct 16, 2025 · OpenCV (Open Source Computer Vision Library) is an open source computer vision and machine learning (AI) software library.
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 …
Error: OpenCV(4.11.0) error: (-5:Bad argument) in function 'imshow'
Apr 4, 2025 · I think there was an update to the input sent to opencv in version 4.11 and it especially affects Linux-based systems. The question is, how should we adjust the array …
Build OpenCV with Cuda - C++ - OpenCV
Mar 7, 2025 · I am building an OpenCV library by Cmake with Cuda. My GPU and Cuda Toolkit are GTX1650 and v12.8, respectively. The command is following: cmake -G "Visual Studio 17 …
Can't open/read file: check file path/integrity - C++ - OpenCV
Jan 20, 2025 · Hello friends. The following program WORKED to read image files, but it stopped working and gave the following error: global loadsave.cpp:268 cv::findDecoder imread_ (''): …
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 …
Missing opencv dlls - OpenCV
Nov 15, 2024 · OpenCV has, or is in the process of gaining, a kind of runtime dispatch for some of its backends (highgui, videoio). What you’re seeing is its thought process. It will look for stuff …
I wonder if opencv has been installed - build - OpenCV
Jul 16, 2025 · I tried to run opencv using Visual Studio on Windows 11. But it is missing many include files. I think I was missing some steps during the installation process. For instance if I …
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 …
DLL load failed while importing cv2 - Python - OpenCV
Aug 29, 2023 · I may be wrong but it seems like you are mixing up two different installation methods. If you pip install you shouldn’t need to copy any dll’s accross. If you are building from …