Paper: Beyond Pixels: From Video Priors to 4D Worlds
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Problem
Generating dynamic 3D scenes (often referred to as “4D” because they involve space and time) from conditions like text or images is a challenging area in generative AI. Current methods for creating these 4D scenes have limitations: either they generate videos first and then reconstruct the 3D geometry with a separate model (leading to inconsistencies), or they directly predict the geometry, which ties their approach too closely to a specific video generator and makes it difficult to adapt as models evolve.



