PPMem stores video world-model scenes as compact planar memory
About 100K plane primitives, roughly 5MB per scene, stay coherent across hundreds of frames under large viewpoint changes.
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Stories tagged #3d-memory
Never Look Back: Understanding Persistence in 3D Object Memory from Egocentric Videos
Ledger, a persistent 3D object memory, lifts HD-EPIC accuracy from 29.7% to 42.6% on egocentric video.
WorldCrafter: Consistent Video World Model with Implicit 3D-aware Memory
WorldCrafter uses implicit 3D-aware memory to keep video world models consistent during long camera moves.