%0 Journal Article
%T Visualization of 2D and 3D vector field<br>二维和三维矢量场的可视化
%A ZHAO An-yuan
%A REN Jie
%A LIU Dong-quan
%A <br>赵安元
%A 任杰
%A 刘东权
%J 计算机应用研究
%D 2011
%I 
%X Vector field visualization can help people intuitively understand the two-dimensional and three-dimensional vector field. For two-dimensional vector field, the current methods of vector field visualization only provide the information about direction but not intensity. In addition, for the three-dimensional vector field, the vector field visualization result is not encouraging. This paper achieved two-dimensional and three-dimensional vector field visualization by the line integral convolution. In this paper we extend the idea of Bresenham line drawing algorithm to track the streamline on two-dimensional plane and in three-dimensional space. For each point either in the two-dimensional or the three-dimensional vector field our method will establish a two-dimensional or a three-dimensional table, respectively, to store the location of its previous and also next points along the streamline to remove the redundancy occurred from conventional streamline tracking methods. For the two-dimensional vector field, we applied the color transparency to the gray-scale LIC image and color coded motion amplitude image to enhance the motion strength on display. For the three-dimensional vector field, LIC was used to get the output texture pixels and the ray casting volume rendering method has been used to show the three-dimensional image. Simulation results show that patterns in the two-dimensional vector field and also in the three-dimensional vector field can be visualized clearly and intuitively.
%K visualization
%K line integral convolution (LIC)
%K streamline tracking
%K 2-D vector field
%K 3-D vector field<br>科学可视化
%K 线积分卷积
%K 流线跟踪
%K 二维矢量场
%K 三维矢量场
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=48D16702E95F42E3E46EAC369D0713B0&yid=9377ED8094509821&vid=D3E34374A0D77D7F&iid=E158A972A605785F&sid=D8780850D7A0B267&eid=29BA6FD8D06FC06A&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=0&reference_num=16