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Evaluation of Automatic Building Detection Approaches Combining High Resolution Images and LiDAR Data
Geo-Environmental Cartography and Remote Sensing Research Group, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain
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Received: 24 March 2011; in revised form: 5 May 2011 / Accepted: 1 June 2011 / Published: 14 June 2011
Abstract: In this paper, two main approaches for automatic building detection and localization using high spatial resolution imagery and LiDAR data are compared and evaluated: thresholding-based and object-based classification. The thresholding-based approach is founded on the establishment of two threshold values: one refers to the minimum height to be considered as building, defined using the LiDAR data, and the other refers to the presence of vegetation, which is defined according to the spectral response. The other approach follows the standard scheme of object-based image classification: segmentation, feature extraction and selection, and classification, here performed using decision trees. In addition, the effect of the inclusion in the building detection process of contextual relations with the shadows is evaluated. Quality assessment is performed at two different levels: area and object. Area-level evaluates the building delineation performance, whereas object-level assesses the accuracy in the spatial location of individual buildings. The results obtained show a high efficiency of the evaluated methods for building detection techniques, in particular the thresholding-based approach, when the parameters are properly adjusted and adapted to the type of urban landscape considered.
Keywords: building detection; LiDAR; high spatial resolution imagery; object-based image classification
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Hermosilla, T.; Ruiz, L.A.; Recio, J.A.; Estornell, J. Evaluation of Automatic Building Detection Approaches Combining High Resolution Images and LiDAR Data. Remote Sens. 2011, 3, 1188-1210.
Hermosilla T, Ruiz LA, Recio JA, Estornell J. Evaluation of Automatic Building Detection Approaches Combining High Resolution Images and LiDAR Data. Remote Sensing. 2011; 3(6):1188-1210.
Hermosilla, Txomin; Ruiz, Luis A.; Recio, Jorge A.; Estornell, Javier. 2011. "Evaluation of Automatic Building Detection Approaches Combining High Resolution Images and LiDAR Data." Remote Sens. 3, no. 6: 1188-1210.