NavCrafter: Exploring 3D Scenes from a Single Image

• URL: http://arxiv.org/abs/2604.02828v1
• Date: Fri, 03 Apr 2026 07:50:39 GMT
• Title: NavCrafter: Exploring 3D Scenes from a Single Image
• Abstract summary: NavCrafter is a framework that explores 3D scenes from a single image by synthesizing novel-view video sequences.<n>We propose a multi-stage camera control mechanism that conditions diffusion models with diverse trajectories.<n>Experiments demonstrate that NavCrafter achieves state-of-the-art novel-view synthesis under large viewpoint shifts.
• Score: 25.95468802469574
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Creating flexible 3D scenes from a single image is vital when direct 3D data acquisition is costly or impractical. We introduce NavCrafter, a novel framework that explores 3D scenes from a single image by synthesizing novel-view video sequences with camera controllability and temporal-spatial consistency. NavCrafter leverages video diffusion models to capture rich 3D priors and adopts a geometry-aware expansion strategy to progressively extend scene coverage. To enable controllable multi-view synthesis, we introduce a multi-stage camera control mechanism that conditions diffusion models with diverse trajectories via dual-branch camera injection and attention modulation. We further propose a collision-aware camera trajectory planner and an enhanced 3D Gaussian Splatting (3DGS) pipeline with depth-aligned supervision, structural regularization and refinement. Extensive experiments demonstrate that NavCrafter achieves state-of-the-art novel-view synthesis under large viewpoint shifts and substantially improves 3D reconstruction fidelity.

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