Adaptive Illumination Normalization Approach Based on Denoising Technique for Face Recognition

doi:10.1007/s12204-017-1797-5

Journal of shanghai Jiaotong University (Science) ›› 2017, Vol. 22 ›› Issue (1): 45-049.doi: 10.1007/s12204-017-1797-5

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Adaptive Illumination Normalization Approach Based on Denoising Technique for Face Recognition

LIAN Zhichaoa,b* (练智超), SONG Jiea (宋杰), LI Yanga (李杨)

(a. School of Computer Science and Engineering; b. Jiangsu Key Laboratory of Image and Video Understanding for Social Safety, Nanjing University of Science and Technology, Nanjing 210094, China)
(a. School of Computer Science and Engineering; b. Jiangsu Key Laboratory of Image and Video Understanding for Social Safety, Nanjing University of Science and Technology, Nanjing 210094, China)

Online:2017-02-28 Published:2017-04-04
Contact: LIAN Zhichao (练智超) E-mail:lzcts@163.com

Abstract

Abstract: A novel adaptive illumination normalization approach is proposed to eliminate the effects caused by illumination variations for face recognition. The proposed method divides an image into blocks and performs discrete cosine transform (DCT) in blocks independently in the logarithm domain. For each block-DCT coefficient except the direct current (DC) component, we take the illumination as main signal and take the reflectance as “noise”. A data-driven and adaptive soft-thresholding denoising technique is employed in each block-DCT coefficient except the DC component. Illumination is estimated by applying the inverse DCT in the block-DCT coefficients, and the indirectly obtained reflectance can be used in further recognition task. Experimental results show that the proposed approach outperforms other existing methods. Moreover, the proposed method does not need any prior information, and none of the parameters can be determined by experience.

Key words: face recognition| illumination variation| soft-thresholding denoising

摘要： A novel adaptive illumination normalization approach is proposed to eliminate the effects caused by illumination variations for face recognition. The proposed method divides an image into blocks and performs discrete cosine transform (DCT) in blocks independently in the logarithm domain. For each block-DCT coefficient except the direct current (DC) component, we take the illumination as main signal and take the reflectance as “noise”. A data-driven and adaptive soft-thresholding denoising technique is employed in each block-DCT coefficient except the DC component. Illumination is estimated by applying the inverse DCT in the block-DCT coefficients, and the indirectly obtained reflectance can be used in further recognition task. Experimental results show that the proposed approach outperforms other existing methods. Moreover, the proposed method does not need any prior information, and none of the parameters can be determined by experience.

关键词: face recognition| illumination variation| soft-thresholding denoising

CLC Number:

TP 391.4

LIAN Zhichaoa,b* (练智超), SONG Jiea (宋杰), LI Yanga (李杨). Adaptive Illumination Normalization Approach Based on Denoising Technique for Face Recognition[J]. Journal of shanghai Jiaotong University (Science), 2017, 22(1): 45-049.

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Adaptive Illumination Normalization Approach Based on Denoising Technique for Face Recognition

Adaptive Illumination Normalization Approach Based on Denoising Technique for Face Recognition

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