A method, system, and computer product for the automated segmentation of the lung fields and costophrenic angle (CP) regions in posteroanterior (PA) chest radiographs wherein image segmentation based on gray-level threshold analysis is performed by applying an iterative global gray-level thresholding...http://www.google.com/patents/US6282307?utm_source=gb-gplus-sharePatent US6282307 - Method and system for the automated delineation of lung regions and costophrenic angles in chest radiographs
