Technology of Graphic & Image
|
App. Res. of Comp. Printed Article
Vol. 36, 2019 No. 9
2834-2839

Improved LIC algorithm based on nonlinear gradual-changing color mapping

Gao Maoting
Dong Hongzhou
Zhou Fan
College of Information Engineering, Shanghai Maritime University, Shanghai 201306, China
DOI: 10.19734/j.issn.1001-3695.2018.03.0199

Abstract

The texture revealed by LIC reflects the directional structure of the whole vector field, but cannot show the field intensity. In order to solve this problem, this paper proposed an improved LIC algorithm based on nonlinear gradual-changing color mapping. Firstly, the intensity of vector field combined with white noise to form the input texture of improved LIC, which used the idea of FastLIC and divided the texture into several regions for synchronous execution of LIC, to improve the efficiency of LIC. Secondly, the improved LIC did a non-linear transformation on the intensity of vector field, and used the processing engine, OpenCV, to implement the color mapping of the vector field intensity according to the gradual-changing color-mapping scheme. Finally, the results of gray texture obtained by LIC and color mapping determined the synthetic coefficient, constructing a cumulative function enhanced the two results, and adopting the way of linear synthesis obtained the final visualization. Simulation results show that when applied to the global ocean flow field and wind field, the proposed algorithm generates a clear visualization displays the direction and intensity of vector field better, and reflects the global information and local changes of the vector field better, when compared with other algorithms.

Foundation Support

国家自然科学基金资助项目(41701523)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2018.03.0199
Publish at: Application Research of Computers Printed Article, Vol. 36, 2019 No. 9
Section: Technology of Graphic & Image
Pages: 2834-2839
Serial Number: 1001-3695(2019)09-060-2834-06

Publish History

[2019-09-05] Printed Article

Cite This Article

高茂庭, 董红周, 周凡. 基于非线性渐变式颜色映射的LIC改进算法 [J]. 计算机应用研究, 2019, 36 (9): 2834-2839. (Gao Maoting, Dong Hongzhou, Zhou Fan. Improved LIC algorithm based on nonlinear gradual-changing color mapping [J]. Application Research of Computers, 2019, 36 (9): 2834-2839. )

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  • Application Research of Computers Monthly Journal
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    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

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