Cross-Space Alignment-based Attribute Artifact Removal for V-PCC

In this paper, we propose a cross-space alignment-based attribute artifact removal method for V-PCC. Firstly, we construct a cross-space frame alignment module to align the adjacent projected 2D frames based on the temporal continuity between the 3D point clouds. Then, we design a multi-frame fusion network that is developed based on U-Net to fuse the current frame with the aligned frames to remove the artifact that occurred in the attribute. Experimental results demonstrate that our proposed method achieves superior performance for the enhancement of point clouds.