Canonical Surface Mapping via Geometric Cycle Consistency

Nilesh Kulkarni, Abhinav Gupta, Shubham Tulsiani; Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV), 2019, pp. 2202-2211


We explore the task of Canonical Surface Mapping (CSM). Specifically, given an image, we learn to map pixels on the object to their corresponding locations on an abstract 3D model of the category. But how do we learn such a mapping? A supervised approach would require extensive manual labeling which is not scalable beyond a few hand-picked categories. Our key insight is that the CSM task (pixel to 3D), when combined with 3D projection (3D to pixel), completes a cycle. Hence, we can exploit a geometric cycle consistency loss, thereby allowing us to forgo the dense manual supervision. Our approach allows us to train a CSM model for a diverse set of classes, without sparse or dense keypoint annotation, by leveraging only foreground mask labels for training. We show that our predictions also allow us to infer dense correspondence between two images, and compare the performance of our approach against several methods that predict correspondence by leveraging varying amount of supervision.

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author = {Kulkarni, Nilesh and Gupta, Abhinav and Tulsiani, Shubham},
title = {Canonical Surface Mapping via Geometric Cycle Consistency},
booktitle = {Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV)},
month = {October},
year = {2019}