Scene Graph Planning

Generate structured 3D scenes by explicitly modeling object relationships, spatial arrangements, and scene composition through graph-based representations. Scene graph planning decomposes 3D scene generation into a structured process: first predict or plan the scene graph (objects + relationships + spatial layout), then generate the geometry for each object. The scene graph encodes “the cup is ON the table, the table is NEXT TO the chair” as a structured representation. Training involves learning the distribution over valid scene graphs and per-object generators that can be composed into a coherent 3D scene.