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Line Integral Convolution for Real‐Time Illustration of Molecular Surface Shape and Salient Regions
Author(s) -
Lawonn Kai,
Krone Michael,
Ertl Thomas,
Preim Bernhard
Publication year - 2014
Publication title -
computer graphics forum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 120
eISSN - 1467-8659
pISSN - 0167-7055
DOI - 10.1111/cgf.12374
Subject(s) - salient , computer science , rendering (computer graphics) , visualization , surface (topology) , computer graphics (images) , convolution (computer science) , preprocessor , representation (politics) , line (geometry) , artificial intelligence , computer vision , real time rendering , algorithm , geometry , mathematics , politics , artificial neural network , political science , law
We present a novel line drawing algorithm that illustrates surfaces in real‐time to convey their shape. We use line integral convolution (LIC) and employ ambient occlusion for illustrative surface rendering. Furthermore, our method depicts salient regions based on the illumination gradient. Our method works on animated surfaces in a frame‐coherent manner. Therefore, it yields an illustrative representation of time‐dependent surfaces as no preprocessing step is needed. In this paper, the method is used to highlight the structure of molecular surfaces and to illustrate important surface features like cavities, channels, and pockets. The benefit of our method was evaluated with domain experts. We also demonstrate the applicability of our method to medical visualization.