A novel adaptive image enhancement algorithm for face detection

Image enhancement techniques are discussed in this paper as a necessary preprocessing step for face detection. First, a measure of the distribution of image information, termed the entropy error rate (EER), is presented on the basis of information theory. Then, by integrating a histogram ridge analy...

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Main Authors: Jin, L., Satoh, S., Sakauchi, M.
Format: Conference Proceeding
Language:English
Subjects:
Algorithm design and analysis
Entropy
Error analysis
Face detection
Histograms
Image analysis
Image enhancement
Information theory
Motion pictures
Testing
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Satoh, S.
Sakauchi, M.
description Image enhancement techniques are discussed in this paper as a necessary preprocessing step for face detection. First, a measure of the distribution of image information, termed the entropy error rate (EER), is presented on the basis of information theory. Then, by integrating a histogram ridge analysis technique and an optimal intensity transform method that aims to minimize the EER of an enhanced image, a novel adaptive enhancement algorithm is proposed. In a baseline face detection test using the algorithm presented by Viola et al. in (2001), comparison experiments are conducted with the Yale B face dataset and our own movie face dataset. The results demonstrate that image enhancement preprocessing can significantly improve face detection accuracy, and that the adaptive enhancement algorithm performs much better than classical histogram-based enhancement techniques such as linear stretching and histogram equalization.
doi_str_mv 10.1109/ICPR.2004.1333904
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subjects Algorithm design and analysis
Entropy
Error analysis
Face detection
Histograms
Image analysis
Image enhancement
Information theory
Motion pictures
Testing
title A novel adaptive image enhancement algorithm for face detection
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