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Local Structure-Based Image Decomposition for Feature Extraction With Applications to Face Recognition

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3 Author(s)
Jianjun Qian ; Sch. of Comput. Sci. & Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China ; Jian Yang ; Yong Xu

This paper presents a robust but simple image feature extraction method, called image decomposition based on local structure (IDLS). It is assumed that in the local window of an image, the macro-pixel (patch) of the central pixel, and those of its neighbors, are locally linear. IDLS captures the local structural information by describing the relationship between the central macro-pixel and its neighbors. This relationship is represented with the linear representation coefficients determined using ridge regression. One image is actually decomposed into a series of sub-images (also called structure images) according to a local structure feature vector. All the structure images, after being down-sampled for dimensionality reduction, are concatenated into one super-vector. Fisher linear discriminant analysis is then used to provide a low-dimensional, compact, and discriminative representation for each super-vector. The proposed method is applied to face recognition and examined using our real-world face image database, NUST-RWFR, and five popular, publicly available, benchmark face image databases (AR, Extended Yale B, PIE, FERET, and LFW). Experimental results show the performance advantages of IDLS over state-of-the-art algorithms.

Published in:

Image Processing, IEEE Transactions on  (Volume:22 ,  Issue: 9 )

Date of Publication:

Sept. 2013

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