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2 Commits (a2d2ea6536df143ca118abc0fbe095e7dadbebd2)

Author	SHA1	Message	Date
Rostislav Vasilikhin	82038be4cd	Merge pull request #25221 from savuor:rv/bench_3d ... OBJ and PLY loaders extention to support texture coordinates and difused colors #25221 ### This PR changes * Texture coordinates support added to `loadMesh()` and `saveMesh()` * `loadMesh()` changes its behavior: all vertex attribute arrays (vertex coordinates, colors, normals, texture coordinates) now have the same size and same-index corresponce - This makes sense for OBJ files where vertex attribute arrays are independent from each other and are randomly accessed when defining faces - Looks like this behavior may also happen in some PLY files; however, it is not implemented until we encounter such files in a wild nature - At the same time `loadPointCloud()` keeps its behavior and loads vertex attributes as they are given in the file * PLY loader supports synonyms for the properties: `diffuse_red`, `diffuse_green` and `diffuse_blue` along with `red`, `green` and `blue` * `std::vector<cv::Vec3i>` supported as an index array type * Colors are loaded as [0, 1] floats instead of uchars - Since colors are usually saved as floats, internal conversion to uchar at loading significantly drops accuracy - Performing uchar conversion does not always makes sense and can be performed by a user if they needs it * PLY loading fixed: wrong offset ruined x coordinate * Python tests added for `loadPointCloud` and `loadMesh` ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [x] There is a reference to the original bug report and related work - [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [x] The feature is well documented and sample code can be built with the project CMake	10 months ago
Wanli Zhong	b06544bd54	Merge pull request #21918 from No-Plane-Cannot-Be-Detected:5.x-region_growing_3d ... Add normal estimation and region growing algorithm for point cloud * Add normal estimation and region growing algorithm for point cloud * 1.Modified documentation for normal estimation;2.Converted curvature in region growing to absolute values;3.Changed the data type of threshold from float to double;4.Fixed some bugs; * Finished documentation * Add tests for normal estimation. Test the normal and curvature of each point in the plane and sphere of the point cloud. * Fix some warnings caused by to small numbers in test * Change the test to calculate the average difference instead of comparing each normal and curvature * Fixed the bugs found by testing * Redesigned the interface and fixed problems: 1. Make the interface compatible with radius search. 2. Make region growing optionally sortable on results. 3. Modified the region growing interface. 4. Format reference. 5. Removed sphere test. * Fix warnings * Remove flann dependency * Move the flann dependency to the corresponding test	3 years ago