gabor滤波器，可以用来特征提取，帮助大家-gabor filters, feature extraction can be used to help you

Mutual information is useful to calculate a set of procedures, Automatic identification in the matlab environment the size of the connected area, Is a good learning materials to learn PCA feature extraction.

matlab信号特征，最大值，最小值，熵(Signal feature extraction)

For feature extraction, signal de-noising, Including the MUSIC algorithm, ESPRIT algorithm ROOT-MUSIC algorithm, In matlab R2009b debugging through.