Place cube in structure-from-motion output Bundler and then determine the coordinates of a newly placed cube corners?

Question

I have generated output of structure-from-motion system for unordered image collections by Bundler.

Now I want to place a cube in the 3D generated space by some GUI and then get the coordinates of the corners of the cube in world coordinate system. The world coordinate system is determined in the Bundler itself and I want the points of the cube with respect to that.

What will be a good a way to procede? Also I have .ply files generated by the Bundler.

I initially thought of loading the bundle.out file or .ply file in meshlab and then placing a cube, but I not able to do that.

Answer 1

I got the solution using Blender.

Here we can export the Bundler output using a script found here.

Then just place a cube and then I am using a script to import the coordinates of the cube to a file. The script along with the previous one and also the complete project can be found here.