We introduce the first completely unsupervised correspondence learning approach for deformable 3D shapes. Key to our model is the understanding that natural deformations (such as changes in pose) approximately preserve the metric structure of the surface, yielding a natural criterion to drive the learning process toward distortion-minimizing predictions. On this basis, we overcome the need for annotated data and replace it by a purely geometric criterion. The resulting learning model is class-agnostic, and is able to leverage any type of deformable geometric data for the training phase. In contrast to existing supervised approaches which specialize on the class seen at training time, we demonstrate stronger generalization as well as applicability to a variety of challenging settings. We showcase our method on a wide selection of correspondence benchmarks, where we outperform other methods in terms of accuracy, generalization, and efficiency.

介绍了第一种完全无监督的对变形三维图形进行对应学习的方法，通过理解自然变形的形态变化近似保持曲面的度量结构，提出了一种驱动学习过程的自然准则，从而克服了对带注释数据的需求，并取而代之的是一种纯几何标准，学习模型不分含义类别，能够利用任何类型的可变形几何数据进行训练，相对于现有的专门针对训练期间观察到的类别的监督方法，我们展示出更强的泛化能力和应用于各种具有挑战性设置的能力，在广泛的对应基准测试中展示了我们的方法，在精度、泛化能力和效率方面均超过了其他方法。

密集形状对应的自监督学习