Color eigen-subband features for endoscopy image classification

This paper presents a new image feature extraction approach in the wavelet domain. We incorporate color-channel information of the LAB color space into the feature extraction process by computing variances from decorrelated detail subbands of the stationary wavelet transform. We evaluate our approach on a medical image classification problem using a k-nearest neighbor classifier and sequential forward feature selection. our experimental results, which include a comparative study to the popular color wavelet energy correlation signatures show that we can produce highly discriminative feature sets in terms of leave-one-out classification accuracy.