Temporal Rate Reduction Clustering for Human Motion Segmentation

Abstract

Human Motion Segmentation (HMS), which aims to partition videos into non-overlapping human motions, has attracted increasing research attention recently. Existing approaches for HMS are mainly dominated by subspace clustering methods, which are grounded on the assumption that high-dimensional temporal data align with a Union-of-Subspaces (UoS) distribution. However, the frames in video capturing complex human motions with cluttered backgrounds may not align well with the UoS distribution. In this paper, we propose a novel approach for HMS, named Temporal Rate Reduction Clustering (TR^2C), which jointly learns structured representations and affinity to segment the frame sequences in video. Specifically, the structured representations learned by TR^2C maintain temporally consistent and align well with a UoS structure, which is favorable for the HMS task. We conduct extensive experiments on five benchmark HMS datasets and achieve state-of-the-art performances with different feature extractors.

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Reproductions