A novel efficient local illumination compensation method based on DCT in logarithm domain
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 est...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/105765 http://hdl.handle.net/10220/17703 http://dx.doi.org/10.1016/j.patrec.2012.04.020 |
| _version_ | 1826118480071491584 |
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| author | Lian, Zhichao Er, Meng Joo Liang, Yanchun |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Lian, Zhichao Er, Meng Joo Liang, Yanchun |
| author_sort | Lian, Zhichao |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T04:44:26Z |
| format | Journal Article |
| id | ntu-10356/105765 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:44:26Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/1057652019-12-06T21:57:28Z A novel efficient local illumination compensation method based on DCT in logarithm domain Lian, Zhichao Er, Meng Joo Liang, Yanchun School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering 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. 2013-11-15T06:58:53Z 2019-12-06T21:57:28Z 2013-11-15T06:58:53Z 2019-12-06T21:57:28Z 2012 2012 Journal Article 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. https://hdl.handle.net/10356/105765 http://hdl.handle.net/10220/17703 http://dx.doi.org/10.1016/j.patrec.2012.04.020 en Pattern recognition letters |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Lian, Zhichao Er, Meng Joo Liang, Yanchun A novel efficient local illumination compensation method based on DCT in logarithm domain |
| title | A novel efficient local illumination compensation method based on DCT in logarithm domain |
| title_full | A novel efficient local illumination compensation method based on DCT in logarithm domain |
| title_fullStr | A novel efficient local illumination compensation method based on DCT in logarithm domain |
| title_full_unstemmed | A novel efficient local illumination compensation method based on DCT in logarithm domain |
| title_short | A novel efficient local illumination compensation method based on DCT in logarithm domain |
| title_sort | novel efficient local illumination compensation method based on dct in logarithm domain |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/105765 http://hdl.handle.net/10220/17703 http://dx.doi.org/10.1016/j.patrec.2012.04.020 |
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