Hierarchical and View-invariant Light Field Segmentation by Maximizing Entropy Rate on 4D Ray Graphs

Abstract

A new light field segmentation method respecting texture appearance, depth consistency, and occlusion. Creates well-shaped segments robust to viewpoint changes; hierarchical — a single optimization yields a whole hierarchy of segmentations. Uses a submodular objective function optimized greedily; introduces a "disjoint tree" data structure for efficient submodular optimization on very large graphs.