Video Instance Segmentation by Weighted Structure Inference

摘要

Video instance segmentation presents significant challenges in complex and dynamic environments, where instances experience progressive occlusion, either from objects obstructing each other or due to changes in the camera's viewpoint. Current state-of-the-art methods rely on memory bank mechanisms, but we still look forward to new paradigms that have the ability to capture and utilize structural information, the ability to model complex relationships, and the flexibility to adapt to dynamic scenarios. To this end, we propose the Weighted Structure Inference method for Video Instance Segmentation. We build on high-order structural relationships by constructing hypergraphs for each video frame, enabling the capture of complex interactions that go beyond traditional pairwise methods. To model intricate dynamics, we introduce Weighted Sheaf Hypergraph Convolution, which enhances the hierarchical and structural information embedded in the hypergraph. Furthermore, we ensure spatio-temporal consistency by employing a dynamic inference mechanism based on Weighted Sliced Wasserstein distance to compare structural features across adjacent frames. Our method preserves the topological characteristics of occlusion instances and improves the reliability of instance tracking across frames. Experimental results demonstrate that our method outperforms existing video instance segmentation frameworks in both Video Instance and Panoptic Segmentation tasks.