White horizontal plane artifact in generated GLB File

[Nikonico98]

Description

When using SAM3D for single-image 3D reconstruction, the generated GLB mesh often includes an unwanted flat horizontal plane at the bottom or top of the object. This plane appears as a white/gray flat surface that is not part of the original object.

Problem Details

The artifact appears as:

• A flat horizontal mesh at the bottom of the reconstructed object (most common)
• Sometimes at the top of the object
• The plane has normals pointing up (Y-axis) or down
• It appears regardless of the input image content

Questions

• Is there a parameter or configuration to prevent this artifact?
• Is this related to the layout prediction or the Gaussian splatting to mesh conversion?
• Are there plans to address this in future releases?

Related Issues

#123 - Generate weird cross objects (similar geometric artifacts)
#128 - Improving geometry and back-view reconstruction

Thanks for the great work on SAM 3D, any guidance on this issue would be appreciated !


[da-eun07]

It might be worth checking whether the mask image is passed correctly, or whether the estimate_plane argument is set to False during inference.

[Nikonico98]

Dear Da-eun, thanks for your kind help, really appreciate it.