We introduce Gen4P, a unified framework for recovering 4D geometry and motion from monocular video. A pretrained video generator is repurposed into a feed-forward 4D perceiver without iterative denoising. Gen4P uses on-demand queries for flexible spatial sampling and continuous-time queries for temporal flexibility.
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Gen4P can be useful for tasks requiring analysis of 4D geometry and motion in video, such as object tracking and depth estimation.
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