Strange noise in the rendered result

[YZsZY]

Hello Author! Recently I've been rendering 2DGS results and I've noticed a lot of strange noise in some cases, but I don't have these problems when rendering with supersplat, it feels like a bug, so I'd like to ask you if you've encountered this problem? Thx a lot~

I thought it's caused by some GS floater points in front of the camera, but I found that the GS point cloud was actually quite clean

[hbb1]

Hi, I haven't encountered this problem before. Is it caused by the renderer? Can you show a video result here, for example, using our script with render_path. I am trying to fix this.

[DekuLiuTesla]

Hi, @hbb1 @YZsZY I meet similar impulse noise when applying 2DGS in street view. The problem is resolved by modifying L366 of forward.cu to

    if ((s.x * Tw.x + s.y * Tw.y) + Tw.z < near_n) continue;

I observe that the noise comes from degenerated points that have negative depth. Under original forward.cu, the depth of degenerated points are replaced by their centers, and some are wrongly included in rendering. By adding this modification, the noise is removed, as shown in the figure above.

[hbb1]

@DekuLiuTesla Thank you! This is absolutely correct. Let me fix that.

[YZsZY]

Thanks so much! @DekuLiuTesla @hbb1