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Rostislav Vasilikhin
82038be4cd
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 |
9 months ago | |
|---|---|---|
| .. | ||
| 3d | Merge pull request #22925 from savuor:pytsdf_from_scratch | 2 years ago |
| 3d.hpp | Merge pull request #25221 from savuor:rv/bench_3d | 9 months ago |