Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105765
Title: A novel efficient local illumination compensation method based on DCT in logarithm domain
Authors: Lian, Zhichao
Er, Meng Joo
Liang, Yanchun
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2012
Source: Lian, Z., Er, M. J., & Liang, Y. (2012). A novel efficient local illumination compensation method based on DCT in logarithm domain. Pattern Recognition Letters, 33(13), 1725-1733.
Series/Report no.: Pattern recognition letters
Abstract: In this paper, a novel illumination compensation method for face recognition under illumination variations is proposed. Rather than performing illumination compensation in a global way, the proposed method uses low-frequency discrete cosine transform (DCT) coefficients in the logarithm domain to estimate illumination in local areas. To estimate the illumination of every point more precisely, a mean operator is applied to refine the estimation. Experimental results on the CMU PIE database, the Yale Face database B and the Extended Yale Face database B demonstrate that the method is superior in comparison with other existing methods. Furthermore, a simplified version of the method is also proposed. Both theoretical analysis and experimental results demonstrate the validity and high computational efficiency of the simplified version. Performances of the proposed methods under different values of parameters are also discussed in the paper.
URI: https://hdl.handle.net/10356/105765
http://hdl.handle.net/10220/17703
DOI: 10.1016/j.patrec.2012.04.020
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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