OpenCV - Ask OpenCV Questions, Get OpenCV Answers
Nov 7, 2025 · OpenCV (Open Source Computer Vision Library) is an open source computer vision and machine learning (AI) software library.
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 …
Opencv Rtsp Stream timeout - Python - OpenCV
Feb 17, 2025 · I have an RTSP URL for streaming from a CCTV camera, but I get the following error: [ WARN:[email protected]] global cap_ffmpeg_impl.hpp:453 _opencv_ffmpeg_interrupt_callback Stream …
Download haarcascade_frontalface_default.xml - OpenCV Q&A Forum
Jul 26, 2020 · How do I do this from github? I'm using Windows/Pycharm
How to use Thin Plate Spline Shape Transformer correctly?
Oct 30, 2024 · other “warp” functions in opencv will implicitly invert the given transform, e.g. an affine or homography matrix, such that the result is the expected forward transform. you might have to fit a …
Building Open-CV 4.9.0 with Cuda 12.3 in Windows 11 - build - OpenCV
Mar 13, 2024 · Build OpenCV (including Python) with CUDA on Windows: Comprehensive Guide... Guide to building OpenCV (including Python bindings) with CUDA (optionally the Nvidia Video Codec …
How to use bag of words example with BRIEF descriptors? - OpenCV …
I am trying to run OpenCV's Bag of Words example. So far, it works perfectly just with SIFT and SURF descriptors (which are non free). I am trying other descriptors such as BRIEF and FREAK, but the …
Welcome to OpenCV Forum!
Aug 27, 2020 · Welcome to the new and improved OpenCV Forum! We’re excited to finally have a better option for discussion, questions, and answers that can be used from multiple platforms including …
A Straightforward method to build ffmpeg for OpenCV?
Apr 14, 2022 · I have been working and doing research into how to build the opencv_ffmpegxxx.dll. I’m working with OpenCV 4.5.5, the contrib modules and Visual Studio 2019. I AM able to compile …