Computer Vision
Shelf-Supervised Mesh Prediction in the Wild
June 23, 2021
Abstract
We aim to infer 3D shape and pose from a single image and propose a learning-based approach that can train from unstructured image collections, using only segmentation outputs from off-the-shelf recognition systems as supervisory signal (i.e. 'shelf-supervised'). We first infer a volumetric representation in a canonical frame, along with the camera pose for the input image. We enforce the representation geometrically consistent with both appearance and silhouette, and also that the synthesized novel views are indistinguishable from image collections. Then the coarse volumetric prediction is converted to a mesh-based representation, which is further refined in the predicted camera frame given the input image. These two steps allow both shape-pose factorization from unannotated images and reconstructing per-instance shape in finer details. We report performance on both synthetic and real world datasets. Experiments show that our approach captures category-level 3D shape from image collections more accurately than alternatives, and that this can be further refined by our instance-level specialization.
AUTHORS
Publisher
CVPR 2021
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