• It reads one or more YAML files produced by calibration.cpp.
• displays an interactive 3D scene of the calibration setup with camera frustums and board meshes.
• Supports both camera-centric and board-centric views.
• exports the entire scene as a .obj/.mtl for use in meshlab.
• also includes an error bar plot and frustum highlighting for single-camera setups.

calibration results generated by calibration.cpp: https://drive.google.com/drive/folders/13NvZHaxTFdAB-bzlNve8kKSMIg9gAu6K

Results Uploaded at: https://drive.google.com/drive/folders/1fkFyoBRGcNY4UCQhGgadO6uKlAkrzjTe

Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

• I agree to contribute to the project under Apache 2 License.
• 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
• The PR is proposed to the proper branch
• There is a reference to the original bug report and related work
• There is accuracy test, performance test and test data in opencv_extra repository, if applicable
  Patch to opencv_extra has the same branch name.
• The feature is well documented and sample code can be built with the project CMake