SYSTEM AND METHOD FOR COMPUTER AIDED DETECTION VIA ASYMMETRIC CASCADE OF SPARSE LINEAR CLASSIFIERS

摘要

A method for computer aided detection of anatomical abnormalities in medical images includes providing a plurality of abnormality candidates (10) and features (11, 13, 15) of said abnormality candidates, and classifying said abnormality candidates as true positives or false positives using a hierarchical cascade of linear classifiers (12, 14, 16) of the form sign(w<SUP>T</SUP>x+b), wherein x is a feature vector, w is a weighting vector and b is a model parameter, wherein different weights are used to penalize false negatives and false positives, and wherein more complex features are used for each successive stage of said cascade of classifiers.