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Summary: TensoRF at step 2000 does volume croping and resizing. At those steps it calculates part of the voxel grid which has density big enough to have objects and resizes the grid to fit that object. Change is done on 3 levels: - implicit function subscribes to epochs and at specific epochs finds the bounding box of the object and calls resizing of the color and density voxel grids to fit it - VoxelGrid module calls cropping of the underlaying voxel grid and resizing to fit previous size it also adjusts its extends and translation to match wanted size - Each voxel grid has its own way of cropping the underlaying data Reviewed By: kjchalup Differential Revision: D39854548 fbshipit-source-id: 5435b6e599aef1eaab980f5421d3369ee4829c50