Multiview extensive partition operators for semantic video object extraction

Occlusion/disocclusion is one of the fundamental problems for semantic video object (SVO) extraction, where pixel-wise accuracy is required. This issue is critical because the degradation in tracking due to object occlusion/disocclusion significantly increases the amount of user interaction required in off-line video editing applications. In this paper, we present an approach based on the application of an extensive operator on a lattice of partitions, which exploits information from various views of the scene, based on a probabilistic formulation. Our multiview operator builds on the regional application of the Maximum a Posteriori principle, by integrating a single-view region classification stage,vith a multiview stage that improves classification for those disoccluded regions labeled as uncertain. Results on several real sequences show that our approach improves the SVO tracking compared to the single-view case and that, as a result, increases the quality of the extracted SVOs and reduces the total amount of user interaction.