@inproceedings{f42a921853594170aa3f7c2b8a9d3549,
title = "Localization of buildings with a gable roof in very high-resolution aerial images",
abstract = "This study aims at the robust automatic detection of buildings with a gable roof in varying rural areas from very-high-resolution aerial images. The originality of our approach resides in a custom-made design extracting key features close to modeling, such as e.g. roof ridges and gutters. In this way, we allow a large freedom in roof appearances. The proposed method is based on a combination of two hypotheses. First, it exploits the physical properties of gable roofs and detects straight line-segments within non-vegetated and non-farmland areas, as possibilities of occurring roof-ridges. Second, for each of these candidate roof-ridges, the likely roof-gutter positions are estimated for both sides of the line segment, resulting in a set of possible roof configurations. These hypotheses are validated based on the analysis of size, shadow, color and edge information, where for each roof-ridge candidate the optimal configuration is selected. Roof configurations with unlikely properties are rejected and afterwards ridges with overlapping configurations are fused. Experiments conducted on a set of 200 images covering various rural regions, with a large variation in both building appearance and surroundings, show that the algorithm is able to detect 75% of the buildings with a precision of 69.4%. We consider this as a reasonably good result, since the computing is fully unconstrained, numerous buildings were occluded by trees and because there is a significant appearance difference between the considered test images.",
author = "L. Hazelhoff and {With, de}, P.H.N.",
year = "2011",
doi = "10.1117/12.873748",
language = "English",
isbn = "9780819484192",
series = "Proceedings of SPIE",
publisher = "SPIE",
pages = "788208--",
editor = "A. Said and O.G. Guleruyuz and R.L. Stevenson",
booktitle = "Proceedings of Visual Information Processing and Communication II , 22-24 January, 2011, San Francisco, California, USA",
address = "United States",
note = "conference; Visual Information Processing and Communication II ; Conference date: 01-01-2011",
}