OpenCV - Ask OpenCV Questions, Get OpenCV Answers
Nov 3, 2025 · OpenCV (Open Source Computer Vision Library) is an open source computer vision and machine learning (AI) software library.
Download haarcascade_frontalface_default.xml - OpenCV Q&A Forum
Jul 26, 2020 · How do I do this from github? I'm using Windows/Pycharm
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_ (''): can't open/read …
Unable to compile CUDA Version - Python - OpenCV
Apr 25, 2025 · Hello guys. I’m during 3 days trying to make opencv to work with CUDA. I already have CUDA installed, cudnn etc. What happens: After making all process described in some youtube …
/usr/include/opencv4/opencv2/opencv.hpp:48:10: fatal error: opencv2 ...
Dec 20, 2024 · most likely an installation problem. please recap, if you built the libs locally, in which case stuff went to : /usr/local/include/opencv4/ and the libs to: /usr/local/lib/ or if you got them from some …
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 inputs created with …
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 2022" …
Missing lib files while building with Visual Studio 2022 - build - OpenCV
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 …
Anti-aliased downscaling in opencv for ML preprocessing, is it possible?
Apr 26, 2024 · I built an inference pipeline in opencv for one of my computer vision models. After I tested this pipeline I noticed some big differences in scoring compared to pytorch inference. I tracked the …
Corners identification with OpenCV.js - javascript - OpenCV
Apr 7, 2025 · the opencv.js project was a GSoC project, a kind of feasibility study. there is hardly any code using it for LLMs to learn from. approxPolyDP was never useful for things with rounded corners. …