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Performance Comparison of PCA,DWT-PCA And LWT-PCA for Face Image Retrieval

Authors: Madhavan J;

Performance Comparison of PCA,DWT-PCA And LWT-PCA for Face Image Retrieval

Abstract

This paper compares the performance of face image retrieval system based on discrete wavelet transforms and Lifting wavelet transforms with principal component analysis (PCA). These techniques are implemented and their performances are investigated using f rontal facial images from the ORL database. The Discrete Wavelet Transform is effective in representing image features and is suitable in Face image retrieval, it still encounters problems especially in implementation; e.g. Floating point operation and decomposition speed. We use the advantages of lifting scheme, a spatial approach for constructing wavelet filters, which provides feasible alternative for problems facing its classical counterpart.Lifting scheme has such intriguing properties as convenien t construction, simple structure, integer-to-integer transform, low computational complexity as well as flexible adaptivity, revealing its potentials in Face image retrieval. Comparing to PCA and DWT with PCA, Lifting wavelet transform with PCA gives less computation and DWT-PCA gives high retrieval rate..

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
gold