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SpatialTracker: Tracking Any 2D Pixels in 3D Space
April 9, 2024, 4:46 a.m. | Yuxi Xiao, Qianqian Wang, Shangzhan Zhang, Nan Xue, Sida Peng, Yujun Shen, Xiaowei Zhou
cs.CV updates on arXiv.org arxiv.org
Abstract: Recovering dense and long-range pixel motion in videos is a challenging problem. Part of the difficulty arises from the 3D-to-2D projection process, leading to occlusions and discontinuities in the 2D motion domain. While 2D motion can be intricate, we posit that the underlying 3D motion can often be simple and low-dimensional. In this work, we propose to estimate point trajectories in 3D space to mitigate the issues caused by image projection. Our method, named SpatialTracker, …
abstract arxiv cs.cv domain part pixel pixels posit process projection space tracking type videos
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