Implicit field supervision for robust non-rigid shape matching
This addresses the challenge of robust shape correspondence for visual computing applications, though it appears incremental by adapting auto-decoders to shape analysis.
The paper tackled the problem of non-rigid shape matching by introducing an auto-decoder framework that learns a continuous deformation field, supervised with a novel Signed Distance Regularisation, and demonstrated compelling performance on compromised data and real-world scans.
Establishing a correspondence between two non-rigidly deforming shapes is one of the most fundamental problems in visual computing. Existing methods often show weak resilience when presented with challenges innate to real-world data such as noise, outliers, self-occlusion etc. On the other hand, auto-decoders have demonstrated strong expressive power in learning geometrically meaningful latent embeddings. However, their use in \emph{shape analysis} has been limited. In this paper, we introduce an approach based on an auto-decoder framework, that learns a continuous shape-wise deformation field over a fixed template. By supervising the deformation field for points on-surface and regularising for points off-surface through a novel \emph{Signed Distance Regularisation} (SDR), we learn an alignment between the template and shape \emph{volumes}. Trained on clean water-tight meshes, \emph{without} any data-augmentation, we demonstrate compelling performance on compromised data and real-world scans.