On Single-Sequence and Multi-Sequence Factorizations

Subspace based factorization methods are commonly used for a variety of applications, such as 3D reconstruction, multi-body segmentation and optical flow estimation. These are usually applied to a single video sequence. In this paper we present an analysis of the multi-sequence case and place it under a single framework with the single sequence case. In particular, we start by analyzing the characteristics of subspace based spatial and temporal segmentation. We show that in many cases objects moving with different 3D motions will be captured as a single object using multi-body (spatial) factorization approaches. Similarly, frames viewing different shapes might be

• Type: Journal
• Year: 2006
• Where: IJCV
• Authors: Lihi Zelnik-Manor, Michal Irani
• Keywords: IJCV 2006, Optical Flow Estimation, Single Video Sequence, Subspace Based Factorization