Sparse representation of local spatial-temporal features with dimensionality reduction for motion recognition

Journal article


Wang, Jin, Sun, Xiangping, Liu, Ping, She, Mary F. H. and Kong, Lingxue. (2013). Sparse representation of local spatial-temporal features with dimensionality reduction for motion recognition. Neurocomputing. 115, pp. 150 - 160. https://doi.org/10.1016/j.neucom.2013.01.012
AuthorsWang, Jin, Sun, Xiangping, Liu, Ping, She, Mary F. H. and Kong, Lingxue
Abstract

Sparse representation and compressive sensing have attracted substantial interests in computer vision. In this paper, by introducing two new classification criteria, we extended the sparse representation classification method (SRC) for individual images to classify a video that contains a group of local spatial-temporal features. A dictionary is constructed by concatenating all class-specific dictionaries, each of which is learned from a motion class. A test video is assigned to a class label based on the minimum of reconstruction errors of individual local features or overall reconstruction error. Moreover, we compared the effectiveness of the traditional Principal Component Analysis (PCA) and two compressive sensing based dimensionality reduction methods, i.e., Random Matrix projection and Hash Matrix projection in the framework of sparse representation for motion recognition. Experimental results on four public datasets including hand gesture, human facial, human action and mouse behavior demonstrate that the proposed method achieves comparable or higher recognition accuracies compared to other state-of-the-art methods in the literatures. Although the traditional PCA requires more computation to get the transformation matrix, it performs better than the Random Matrix and Hash Matrix projections using gradient features. However, when raw features (i.e., pixel values) are used, the performance of the Random Matrix and Hash Matrix projections is significantly improved.

Keywordsmotion analysis; sparse coding; compressive sensing; interest points
Year2013
JournalNeurocomputing
Journal citation115, pp. 150 - 160
PublisherElsevier B.V.
ISSN0925-2312
Digital Object Identifier (DOI)https://doi.org/10.1016/j.neucom.2013.01.012
Scopus EID2-s2.0-84878110889
Page range150 - 160
Research GroupInstitute for Learning Sciences and Teacher Education (ILSTE)
Publisher's version
File Access Level
Controlled
Place of publicationNetherlands
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