Hello Tim,
I understand that you are trying to perform transformations such as rotation and scaling on the available OBJ files to align them properly.
This can be achieved by first converting the OBJ files to PLY format, then utilizing the Point Cloud Processing tools available in the Computer Vision Toolbox.
For a sample demonstration of the above process, kindly refer to the following steps:
- Use the Wavefront OBJ toolbox from the file exchange to read the OBJ files and gather necessary data such as vertices.
- Transform this data into PLY format using the 'plywrite' function, also available on the file exchange.
- Select a reference PLY file as your starting point.
- For each OBJ file that has been converted to a PLY file, load it using the 'pcread' function from Point Cloud Processing.
- Apply the 'pcregistericp' function to align two point clouds by employing a rigid transformation, which includes translation, rotation, and uniform scaling, based on their corresponding points.
- Save the transformed data back into PLY files using the 'pcwrite' function.
- Finally, these files can be accessed again using 'pcread' and visually inspected using 'pcshow'.
Kindly refer to the following MATLAB Documentations for further information on how to use the mentioned functions:
- Wavefront OBJ toolbox: https://www.mathworks.com/matlabcentral/fileexchange/27982-wavefront-obj-toolbox
- ‘plywrite’: https://www.mathworks.com/matlabcentral/fileexchange/55171-plywrite
- ‘pcread’: https://www.mathworks.com/help/releases/R2018b/vision/ref/pcread.html
- ‘pcregistercp’: https://www.mathworks.com/help/releases/R2018b/vision/ref/pcregistericp.html
- ‘pcwrite’: https://www.mathworks.com/help/releases/R2018b/vision/ref/pcwrite.html
- ‘pcshow’: https://www.mathworks.com/help/releases/R2018b/vision/ref/pcshow.html
Hope this helps!
Best Regards,
Gowtham
