NDLI: Urban scene rendering using object description

Content Provider	IEEE Xplore Digital Library
Author	Cerdat, F. Descombes, X. Zerubia, J.
Copyright Year	2003
Description	Author affiliation: NRIA, Sophia Antipolis, France (Cerdat, F.; Descombes, X.; Zerubia, J.)
Abstract	We propose a method for the synthesis of urban areas based on a description of objects in the scene. Using Digital Elevation Models (DEM) and aerial pictures, we extract the objects in the scene and model them by simple geometric shapes. The extraction process is described for three groups of objects: buildings, roofs and trees. The reconstruction of buildings is based on a statistical approach developed within the Ariana project in which a marked point process is defined, whose points represent buildings. The marked point process is determined by two elements: a prior using interactions between points to model the knowledge we have about urban areas, and a data model to enforce coherence with respect to the DEM. For the treatment of the roofs, we adopt a strategy which consists of detecting intersection lines between roof planes. The ridges are extracted from the DEM by means of image filtering, morphological operations and a Hough transform. For the extraction of trees, we compare colour information from aerial images and height information from the DEM to select the zones of high vegetation corresponding to trees. Then, mathematical morphology techniques are used to refine the selected zones. Finally, the zones are filled according to a randomized algorithm with circles of fixed radius that model individual trees. Furthermore, in order to evaluate the previous techniques and to experiment with this object-oriented approach in image synthesis, we have developed a graphical tool allowing 3D rendering of urban scenes with the possibility to move around the scene and to interact with the environment. Tests have been conducted on DEMs of the city of Amiens kindly provided by the French Mapping Institute (IGN).
Starting Page	62
Ending Page	64
File Size	1640838
Page Count	3
File Format	PDF
ISBN	0780379292
DOI	10.1109/IGARSS.2003.1293679
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-07-21
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Layout Object oriented modeling Urban areas Data mining Digital elevation models Solid modeling Shape Image reconstruction Data models Coherence
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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