"Analysis-by-Synthesis Transformer for Single-View 3D Reconstruction"

Analysis-by-Synthesis Transformer for Single-View 3D Reconstruction

Jia, D., Ruan, X., Xia, K., Zou, Z., Wang, L., Tang, W.

• Publication: Milan, Italy
• Link: https://eccv.ecva.net
• PDF: wtang_analysisbysynthesis.pdf

Deep learning approaches have made significant success in single-view 3D reconstruction, but they often rely on expensive 3D annotations for training. Recent efforts tackle this challenge by adopting an analysis-by-synthesis paradigm to learn 3D reconstruction with only 2D annotations. However, existing methods face limitations in both shape reconstruction and texture generation. This paper introduces an innovative Analysis-by-Synthesis Transformer that addresses these limitations in a unified framework by effectively modeling pixel-to-shape and pixel-to-texture relationships. It consists of a Shape Transformer and a Texture Transformer. The Shape Transformer employs learnable shape queries to fetch pixel-level features from the image, thereby achieving high-quality mesh reconstruction and recovering occluded vertices. The Texture Transformer employs texture queries for non-local gathering of texture information and thus eliminates incorrect inductive bias. Experimental results on CUB-200-2011 and ShapeNet datasets demonstrate superior performance in shape reconstruction and texture generation compared to previous methods.

Funding: NSF award CNS-1828265, NSF award ECCS-2400900