NDLI: Customizable Strokes for Localized Stylization of View-Dependent Lines Extracted from 3D Models

Content Provider	IEEE Xplore Digital Library
Author	Cardona, L. Saito, S.
Copyright Year	2013
Description	Author affiliation: Grad. Sch. of Humanities & Sci. / Tokyo Inst. of Technol., Ochanomizu Univ., Tokyo, Japan (Saito, S.) \|\| Grad. Sch. of Inf. Sci. & Eng., Tokyo Inst. of Technol., Tokyo, Japan (Cardona, L.)
Abstract	We propose a method to stylize individual lines and preserve their properties as the viewpoint is modified. As the camera position changes and view-dependent lines move across the surface, we track each line in order to extract and store the areas of the surface in which they appear. Each line has an unique reference that we use to check an indexed table from which we can recover its stylization after arbitrary camera movements. We call this region the tracked area of the line. Additionally, we provide a method for line segmentation of occluding contours. In our algorithm, we divide the contour lines at inflection points in order to segment them in a way that is suited for localized stylization as well as to better approximate artist strokes. We also optimize the line tracking process by making use of the Gaussian curvature to separate the elliptic and hyperbolic areas of the surface. In this paper we show how each line only appears in a limited area of the surface corresponding to its tracked area. We also discuss how to eliminate the over-segmentation caused by numerical instability of the approximations in polygonal surfaces as well as how smoothing can be used in order to deal with highly detailed models. Finally, we highlight the achievements of our system for localized stylization of the contour lines of 3D models.
Starting Page	140
Ending Page	146
File Size	1118882
Page Count	7
File Format	PDF
e-ISBN	9781479922468
DOI	10.1109/CW.2013.62
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-21
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Tracking Smoothing methods Three-dimensional displays Solid modeling Shape Cameras Laplace equations tracking NPR line drawings stylization segmentation
Content Type	Text
Resource Type	Article

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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
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