How to output the per-frame point cloud or mesh

[junhua-l]

Thanks for the great work.

I now want to export the contents of each frame for editing. The output of Siggraph 2023 3D Gaussian is a.ply file, and I can easily get the corresponding point cloud and mesh. For 4D Gaussian, I want to know how to get the deformable position of 3D Gaussian in each frame so that I can output the per-frame point cloud or mesh.

Any possible advice or practice would be very helpful to me. Thank you sincerely.

[junhua-l]

Since Figure 5 in the article also shows the visualizations of point clouds with different training iterations, I guess there are some ways to derive the point cloud.

[guanjunwu]

1. change the argument metioned in "save_iterations" like: parser.add_argument("--save_iterations", nargs="+", type=int, default=[2000, 3000, 5000, 7_000, 9000, 10000,12000, 14000, 20000, 30_000, 45000, 60000])
2. you will find results in output/your_checkpoint_dir

P.S: I visualized results in Blender(Open3D also works)

[junhua-l]

Sorry for disturbing you again. That's not what I'm looking for.

What you provide is to store the static point cloud on different training iterations. Since this is a dynamic Gaussian, what I want is the point cloud of each frame when the dynamic Gaussian is played after training.

[junhua-l]

I have modified a version myself and it has worked now. Thank you for your answer : )

[henrypearce4D]

@JunhuaLiu0 could you share your modification?

[imjxy]

I have modified a version myself and it has worked now. Thank you for your answer : )我自己修改了一个版本，现在已经可以运行了。谢谢您的回答 ： ）

@junhua-l could you share your modification? Or can you provide some hints? Thank you