KVN: Keypoints Voting Network with Differentiable RANSAC for Stereo Pose Estimation

• URL: http://arxiv.org/abs/2307.11543v3
• Date: Mon, 4 Mar 2024 10:49:10 GMT
• Title: KVN: Keypoints Voting Network with Differentiable RANSAC for Stereo Pose Estimation
• Authors: Ivano Donadi and Alberto Pretto
• Abstract summary: We introduce a differentiable RANSAC layer into a well-known monocular pose estimation network. We show that the differentiable RANSAC plays a role in the accuracy of the proposed layer.
• Score: 1.1603243575080535
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Object pose estimation is a fundamental computer vision task exploited in several robotics and augmented reality applications. Many established approaches rely on predicting 2D-3D keypoint correspondences using RANSAC (Random sample consensus) and estimating the object pose using the PnP (Perspective-n-Point) algorithm. Being RANSAC non-differentiable, correspondences cannot be directly learned in an end-to-end fashion. In this paper, we address the stereo image-based object pose estimation problem by i) introducing a differentiable RANSAC layer into a well-known monocular pose estimation network; ii) exploiting an uncertainty-driven multi-view PnP solver which can fuse information from multiple views. We evaluate our approach on a challenging public stereo object pose estimation dataset and a custom-built dataset we call Transparent Tableware Dataset (TTD), yielding state-of-the-art results against other recent approaches. Furthermore, in our ablation study, we show that the differentiable RANSAC layer plays a significant role in the accuracy of the proposed method. We release with this paper the code of our method and the TTD dataset.

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