We introduce a new framework for learning dense correspondence between deformable 3D shapes. Existing learning based approaches model shape correspondence as a labelling problem, where each point of a query shape receives a label identifying a point on some reference domain; the correspondence is then constructed a posteriori by composing the label predictions of two input shapes. We propose a paradigm shift and design a structured prediction model in the space of functional maps, linear operators that provide a compact representation of the correspondence. We model the learning process via a deep residual network which takes dense descriptor fields defined on two shapes as input, and outputs a soft map between the two given objects. The resulting correspondence is shown to be accurate on several challenging benchmarks comprising multiple categories, synthetic models, real scans with acquisition artifacts, topological noise, and partiality.

该研究提出了一种新的学习框架，用于学习变形的3D形状之间的密集对应关系，通过使用一个在功能映射空间内的结构化预测模型，以及对两个形状定义的密集描述符场的输入和输出，得到在多个具有挑战性的基准测试中表现准确的对应关系。

深度功能映射: 用于稠密形状对应关系的结构化预测