Journal
IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS
Volume 28, Issue 6, Pages 2517-2529Publisher
IEEE COMPUTER SOC
DOI: 10.1109/TVCG.2020.3032734
Keywords
Non-photorealistic rendering (NPR); hypnotic line art; tensor field design; streamline placement; vector field visualization
Categories
Funding
- Ministry of Science and Technology, Taiwan [107-2221-E-006-196-MY3, 108-2221-E-006-038-MY3]
- NSF [1619383]
- Div Of Information & Intelligent Systems
- Direct For Computer & Info Scie & Enginr [1619383] Funding Source: National Science Foundation
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This article introduces an interactive system for creating hypnotic line art images by integrating and placing streamlines in tensor fields. With just a few sketches, users can generate professional-level hypnotic line art work.
Hypnotic line art is a modern form in which white narrow curved ribbons, with the width and direction varying along each path over a black background, provide a keen sense of 3D objects regarding surface shapes and topological contours. However, the procedure of manually creating such line art work can be quite tedious and time-consuming. In this article, we present an interactive system that offers a What-You-See-Is-What-You-Get (WYSIWYG) scheme for producing hypnotic line art images by integrating and placing evenly-spaced streamlines in tensor fields. With an input picture segmented, the user just needs to sketch a few illustrative strokes to guide the construction of a tensor field for each part of the objects therein. Specifically, we propose a new method which controls, with great precision, the aesthetic layout and artistic drawing of an array of streamlines in each tensor field to emulate the style of hypnotic line art. Given several parameters for streamlines such as density, thickness, and sharpness, our system is capable of generating professional-level hypnotic line art work. With great ease of use, it allows art designers to explore a wide variety of possibilities to obtain hypnotic line art results of their own preferences.
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