arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2204.01263cs.CV
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直接密集位姿估计

Direct Dense Pose Estimation

KU-Leuven(鲁汶大学);Toyota Motor Europe(丰田汽车欧洲公司);Max Planck Institute for Informatics(马克斯·普朗克信息学研究所);Saarland Informatics Campus(萨尔兰信息学园区);ETH Zurich(苏黎世联邦理工学院)

Liqian Ma, Lingjie Liu, Christian Theobalt, Luc Van Gool

摘要:

密集人体姿态估计是学习RGB图像与人体表面之间的密集对应关系的问题,其具有各种应用,例如人体重建,人体姿态转移和人体动作识别。现有的密集姿态估计方法都基于Mask R-CNN框架,并且以自上而下的方式操作,即首先尝试识别每个人的限界框并匹配每个限界框中的密集对应。因此,这些方法由于其对Mask R-CNN检测的关键依赖而缺乏鲁棒性,并且随着图像中人数的增加,运行时间急剧增加。因此,我们提出了一种新的替代方法来解决密集姿态估计问题,称为直接密集姿态(DDP)。DDP首先分别预测实例掩码和全局IUV表示,然后将它们组合在一起。我们还提出了一个简单而有效的二维时间平滑方案,以减轻处理视频数据时的时间抖动。实验表明,DDP克服了以往自顶向下基线方法的局限性,并取得了竞争力的准确性。此外,DDP在计算上比以前的密集姿态估计方法更有效,并且当应用于视频序列时,它减少了抖动,这是以前方法的一个问题。

英文摘要:

Dense human pose estimation is the problem of learning dense correspondences between RGB images and the surfaces of human bodies, which finds various applications, such as human body reconstruction, human pose transfer, and human action recognition. Prior dense pose estimation methods are all based on Mask R-CNN framework and operate in a top-down manner of first attempting to identify a bounding box for each person and matching dense correspondences in each bounding box. Consequently, these methods lack robustness due to their critical dependence on the Mask R-CNN detection, and the runtime increases drastically as the number of persons in the image increases. We therefore propose a novel alternative method for solving the dense pose estimation problem, called Direct Dense Pose (DDP). DDP first predicts the instance mask and global IUV representation separately and then combines them together. We also propose a simple yet effective 2D temporal-smoothing scheme to alleviate the temporal jitters when dealing with video data. Experiments demonstrate that DDP overcomes the limitations of previous top-down baseline methods and achieves competitive accuracy. In addition, DDP is computationally more efficient than previous dense pose estimation methods, and it reduces jitters when applied to a video sequence, which is a problem plaguing the previous methods.

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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