Hierarchical Scoring With 3D Gaussian Splatting for Instance Image-Goal Navigation
Instance Image-Goal Navigation (IIN) asks an agent to locate the specific object instance shown in a goal image. Existing 3D Gaussian Splatting (3DGS) based methods rely on pose-centric search—sampling many viewpoints, rendering them, and comparing against the goal—which is inefficient in continuous 6-DoF space. We ins...