Synonyms
Robust face recognition via sparse representation; Sparse representation-based classification; SRC;
Definition
Robust face recognition via sparse representation is a technique developed for a face recognition system, where a rich set of carefully controlled training face images are provided. Under the assumption that all the training samples from a single class lie in a low-dimensional subspace of a high-dimensional space, this technique tries to code the given test face image as a sparse linear combination of all the training images themselves, i.e., use the fewest possible training samples to interpret the test sample. Sparse representation-based classification (SRC) measures the sparsity of the coding vector by l 0-norm, which counts the number of nonzero entries. Since the l 0-minimization problem is NP-hard, the l 1-minimization, as the closest convex function to l 0-minimization, is employed to find the sparsest coding vector. By optimizing the sparsity of such an...
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Tistarelli, M., Sun, Y. (2014). Sparse Representation for Face Recognition. In: Li, S., Jain, A. (eds) Encyclopedia of Biometrics. Springer, Boston, MA. https://doi.org/10.1007/978-3-642-27733-7_137-2
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DOI: https://doi.org/10.1007/978-3-642-27733-7_137-2
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