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arXiv 2210.05232cs.CV
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DCL-Net:用于6D姿态估计的深度对应学习网络

DCL-Net: Deep Correspondence Learning Network for 6D Pose Estimation

South China University of Technology(华南理工大学);DexForce Co. Ltd.(德锐视科技有限公司);Peng Cheng Laboratory(鹏城实验室)

Hongyang Li, Jiehong Lin, Kui Jia

摘要:

建立摄像机坐标系和物体坐标系之间的点对应关系是求解物体6D位姿的一种很有前途的方法。然而,3D空间中对应学习的替代目标与物体姿态估计的真实目标相差一步,使得学习对于最终任务而言是次优的。在本文中,我们通过引入一种新的深度对应学习网络方法来解决这一缺点,该方法用于直接6D对象姿态估计,简称为DCL-Net。具体来说,DCL-Net采用了新提出的特征分离和对齐(FDA)模块,在特征空间中分别为部分对象观察及其完整的CAD模型建立部分到部分的对应关系和完整到完整的对应关系,这导致了来自两个坐标系的聚合姿态和匹配特征对;这两个FDA模块因此带来了互补的优势。匹配特征对用于学习用于测量深度对应的质量的置信度分数,而姿态特征对由用于直接对象姿态回归的置信度分数加权。还提出了一种基于置信度的姿态精化网络,以迭代的方式进一步提高姿态精度。广泛的实验表明,DCL-Net在三个基准数据集上的性能优于现有方法,包括YCB-Video,LineMOD和Oclussion-LineMOD;消融研究也证实了我们新设计的有效性。

英文摘要:

Establishment of point correspondence between camera and object coordinate systems is a promising way to solve 6D object poses. However, surrogate objectives of correspondence learning in 3D space are a step away from the true ones of object pose estimation, making the learning suboptimal for the end task. In this paper, we address this shortcoming by introducing a new method of Deep Correspondence Learning Network for direct 6D object pose estimation, shortened as DCL-Net. Specifically, DCL-Net employs dual newly proposed Feature Disengagement and Alignment (FDA) modules to establish, in the feature space, partial-to-partial correspondence and complete-to-complete one for partial object observation and its complete CAD model, respectively, which result in aggregated pose and match feature pairs from two coordinate systems; these two FDA modules thus bring complementary advantages. The match feature pairs are used to learn confidence scores for measuring the qualities of deep correspondence, while the pose feature pairs are weighted by confidence scores for direct object pose regression. A confidence-based pose refinement network is also proposed to further improve pose precision in an iterative manner. Extensive experiments show that DCL-Net outperforms existing methods on three benchmarking datasets, including YCB-Video, LineMOD, and Oclussion-LineMOD; ablation studies also confirm the efficacy of our novel designs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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