mirror of
https://github.com/opencv/opencv.git
synced 2026-07-21 19:33:03 +04:00
Samaresh Kumar Singh
603bc58d3b
Remove performance bottleneck caused by redundant type conversions in the initGMMs() function's tight nested loops that iterate over all image pixels. Changes: - Changed storage vectors from Vec3f to Vec3b to store pixel data directly without intermediate conversion - Modified kmeans preparation to convert Vec3b data to CV_32FC1 only when creating the Mat for clustering (using convertTo instead of per-pixel cast) - Explicitly convert Vec3b to Vec3d only when calling addSample() method Performance Impact: Previously: Vec3b -> Vec3f (in loop) -> Vec3d (implicit in addSample) Now: Vec3b (in loop) -> Vec3d (explicit, only in addSample call) This eliminates one unnecessary type conversion per pixel in the tight loop, reducing computational overhead especially for large images. Fixes #27968
OpenCV: Open Source Computer Vision Library
Resources
- Homepage: https://opencv.org
- Courses: https://opencv.org/courses
- Docs: https://docs.opencv.org/4.x/
- Q&A forum: https://forum.opencv.org
- previous forum (read only): http://answers.opencv.org
- Issue tracking: https://github.com/opencv/opencv/issues
- Additional OpenCV functionality: https://github.com/opencv/opencv_contrib
- Donate to OpenCV: https://opencv.org/support/
Contributing
Please read the contribution guidelines before starting work on a pull request.
Summary of the guidelines:
- One pull request per issue;
- Choose the right base branch;
- Include tests and documentation;
- Clean up "oops" commits before submitting;
- Follow the coding style guide.
Additional Resources
- Submit your OpenCV-based project for inclusion in Community Friday on opencv.org
- Subscribe to the OpenCV YouTube Channel featuring OpenCV Live, an hour-long streaming show
- Follow OpenCV on LinkedIn for daily posts showing the state-of-the-art in computer vision & AI
- Apply to be an OpenCV Volunteer to help organize events and online campaigns as well as amplify them
- Follow OpenCV on Mastodon in the Fediverse
- Follow OpenCV on Twitter
- OpenCV.ai: Computer Vision and AI development services from the OpenCV team.