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The Potential of Specular Reflections for Facade Image Analysis

Drauschke, M. and Mayer, H. (2015) The Potential of Specular Reflections for Facade Image Analysis. PIA15+HRIGI15 – Joint ISPRS conference, 25–27 March 2015, Munich, Germany.

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Several approaches for window detection have been proposed in recent years, which all use the window size, shape or position within the façade as characteristics for the detection. In this paper another property of windows is proposed for their detection: Windows are made of glass, so they tend to specularly reflect sun light, while the surrounding wall diffusely reflects it. To this end, colour values in multiple views are analysed to detect specular reflections. In the experiments, walls often show a high homogeneity of small colour differences, and many windows are clearly visible in the form of colour differences. Nevertheless, it is difficult to segment windows from the façade if there is no prior knowledge about the intensity of the scene’s illumination. Promising results are obtained if the façade lies in the shadow, e.g., of another building or a tree.

Item URL in elib:https://elib.dlr.de/100431/
Document Type:Conference or Workshop Item (Poster)
Title:The Potential of Specular Reflections for Facade Image Analysis
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Drauschke, M.martin.drauschke (at) dlr.deUNSPECIFIED
Mayer, H.Universität der Bundeswehr MünchenUNSPECIFIED
Date:March 2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 33-40
Series Name:ISPRS Annals
Keywords:Façade Images, 3D Reconstruction, Reflection Analysis, Window Detection
Event Title:PIA15+HRIGI15 – Joint ISPRS conference
Event Location:Munich, Germany
Event Type:international Conference
Event Dates:25–27 March 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben Multisensorielle Weltmodellierung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics (since 2013) > Perception and Cognition
Deposited By: Drauschke, Martin
Deposited On:03 Dec 2015 12:06
Last Modified:31 Jul 2019 19:57

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