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A novel Quantized Gradient Direction based face image representation and recognition technique
M. Parlewar, , K. Bhurchandi
Published in Institute of Electrical and Electronics Engineers Inc.
2016
Abstract
This paper presents a novel quantized gradient based local feature descriptor, named Local Quantized Gradient Direction (LQGD) descriptor and the subsequent Partitioned Gradient Histogram, for facial image representation. The 8 bit LQGD descriptor accommodates eight levels quantized gradient magnitude and direction information from the horizontal and vertical gradients at local facial image pixels using 3×3 neighborhoods. The subsequent novel partitioned histogram based feature detection using the proposed descriptor offers separation in feature space resulting in recognition performance improvement. The technique is also robust to rotation, scale variations and noise due to typical preprocessing, background minimization and the descriptor itself. Spatial and transform domain feature level fusion is used for further performance improvement. The benchmarking of the proposed technique has been done using publicly available YEL and JAFFE databases with other contemporary techniques. The proposed technique outperforms the other published contemporary techniques. © 2016 IEEE.
About the journal
JournalData powered by Typeset2016 22nd National Conference on Communication, NCC 2016
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.