NDLI: Point Based Representations for Hierarchical Environments

Content Provider	IEEE Xplore Digital Library
Author	Thangudu, K. Gade, L. Singh, J.M. Narayanan, P.J.
Copyright Year	2007
Description	Author affiliation: Center for Visual Inf. Technol., Int. Inst. of Inf. Technol., Hyderabad (Thangudu, K.; Gade, L.; Singh, J.M.; Narayanan, P.J.)
Abstract	The advent of advanced graphics technologies and improved hardware has enabled the generation of highly complex models with huge number of triangles. Point-based representations and rendering have emerged as viable representations for high-quality models in this scenario. These methods have been demonstrated only on high resolution, compact objects so far. They have to be adapted to environments that extend over large areas to be considered serious representations. In this paper, we present an adaptation of the point-based representation to large, hierarchical environments. We show how point-based data can be generated by sampling polygon-based representations. We also show the combination of an object hierarchy and multiresolution point representations and develop rendering algorithms for the same. The multiresolution representation is constructed during the generation process. We then show a hybrid representation in which the more complex portions of the environment are represented using points and others using the original polygon-based representation. This produces better rendering performance by keeping large, flat regions as triangles. We demonstrate the method on the model of the Fatehpur Sikri which has 14000 objects with over 500,000 triangles
Sponsorship	Indian Statistical Inst
Starting Page	574
Ending Page	578
File Size	299481
Page Count	5
File Format	PDF
ISBN	0769527701
DOI	10.1109/ICCTA.2007.104
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-03-05
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Graphics Geometry Solid modeling Interpolation Clouds Rendering (computer graphics) Sampling methods Hardware Topology Information technology
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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