Fig. 7
From: Window detection in facade images for risk assessment in tunneling
Design of our detection system. Facade images are rectified before being passed to the detector. The detector slides a subwindow across the rectified image and cuts out underlying image patches which are passed to classification. A cascaded classifier which is trained and calibrated beforehand classifies each patch. Overlapping regions of interest (ROIs) of positive classifications are merged and returned as detected windows