Sparse or Dense Point Clouds as Input

Question

Sparse or Dense Point Clouds as Input

Closed this issue 9 months ago · 4 comments

Nice work！But I have a question about this work. I noticed that you used COLMAP to do both sparse and dense reconstruction. May I ask if you are using sparse or dense point clouds as input for 3D Gaussian Splatting?
Looking forward to your reply！

Answer 1 · 2023-12-13T23:22:09.000Z

Hi, we use dense point clouds as inputs

Answer 2 · 2024-01-08T11:52:31.000Z

How to use sparse point clouds as inputs?

Answer 3 · 2024-01-08T11:53:44.000Z

BTW, is it reasonable to use dense point clouds under sparse setting ?

I think that the final rendering quality has relation with initial points, so it may be not reasonable.

Answer 4 · 2024-01-09T20:02:28.000Z

Hi @leo-frank

Thanks for your interest in our work.

The initial number of point cloud does affect rendering quality.

The sparse setting focus on NVS from sparse input views and the dense point cloud only comes from sparse input views. So I think it's reasonalbe to use dense points as long as long as it does not introduce any additional information beyond what is already provided by the sparse views.