DualPoseNet: Category-level 6D Object Pose and Size Estimation using Dual Pose Network with Refined Learning of Pose Consistency

• URL: http://arxiv.org/abs/2103.06526v1
• Date: Thu, 11 Mar 2021 08:33:47 GMT
• Title: DualPoseNet: Category-level 6D Object Pose and Size Estimation using Dual Pose Network with Refined Learning of Pose Consistency
• Authors: Jiehong Lin, Zewei Wei, Zhihao Li, Songcen Xu, Kui Jia, Yuanqing Li
• Abstract summary: Category-level 6D object pose and size estimation is to predict 9 degrees-of-freedom (9DoF) pose configurations of rotation, translation, and size for object instances. We propose a new method of Dual Pose Network with refined learning of pose consistency for this task, shortened as DualPoseNet.
• Score: 30.214100288708163
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Category-level 6D object pose and size estimation is to predict 9 degrees-of-freedom (9DoF) pose configurations of rotation, translation, and size for object instances observed in single, arbitrary views of cluttered scenes. It extends previous related tasks with learning of the two additional rotation angles. This seemingly small difference poses technical challenges due to the learning and prediction in the full rotation space of SO(3). In this paper, we propose a new method of Dual Pose Network with refined learning of pose consistency for this task, shortened as DualPoseNet. DualPoseNet stacks two parallel pose decoders on top of a shared pose encoder, where the implicit decoder predicts object poses with a working mechanism different from that of the explicit one; they thus impose complementary supervision on the training of pose encoder. We construct the encoder based on spherical convolutions, and design a module of Spherical Fusion wherein for a better embedding of pose-sensitive features from the appearance and shape observations. Given no the testing CAD models, it is the novel introduction of the implicit decoder that enables the refined pose prediction during testing, by enforcing the predicted pose consistency between the two decoders using a self-adaptive loss term. Thorough experiments on the benchmark 9DoF object pose datasets of CAMERA25 and REAL275 confirm efficacy of our designs. DualPoseNet outperforms existing methods with a large margin in the regime of high precision.

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