Abstract
We propose a new hybrid unsupervised/supervised learning scheme that integrates independent component analysis (ICA) with the support vector machine (SVM) approach and apply this new learning scheme to the face detection problem. In low-level feature extraction, ICA produces independent image bases that emphasize edge information in the image data. In high-level classification, SVM classifies the ICA features as a face or non-faces. Our experimental results show that by using ICA features we obtain a larger margin of separation and fewer support vectors than by training SVM directly on the image data. This indicates better generalization performance, which is verified in our experiments.
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