replace plane constraint with 2DGS

[CanCanZeng]

Thank you for open sourcing this work, the results are really great.
I think the plane constraints in your paper coincide with the ideas in the 2DGS paper, so have you tried to directly apply the progressive propagation method to 2DGS? Would this result be better?

[kcheng1021]

Hi, thanks for your recognition and great question!
We are planning to try 2DGS representation in GaussianPro for mesh reconstruction. At current stage, I think using 2DGS can improve the mesh reconstruction, but whether it enhances rendering quality needs to be confirmed through experiments. We will keep updating in this project and are also welcome to any contributions from others.