Iterative Twofold Line Integral Convolution for Texture-Based Vector Field Visualization

2009 ◽  
pp. 191-211 ◽  
Author(s):  
Daniel Weiskopf
Keyword(s):  
Vector Field ◽  
Line Integral ◽  
Integral Convolution ◽  
Vector Field Visualization ◽  
Line Integral Convolution

scholarly journals A Vector Field Texture Generation Method without Convolution Calculation

Symmetry ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 724
Author(s):  
Xiaofu Du ◽  
Huilin Liu ◽  
Hsien-Wei Tseng ◽  
Teen-Hang Meen
Keyword(s):  
Vector Field ◽  
Vector Fields ◽  
Special Kind ◽  
Line Integral ◽  
Time Consumption ◽  
Integral Convolution ◽  
Line Integral Convolution ◽  
Texture Generation ◽  
Novel Method ◽  
Streamline Tracing

In the LIC algorithm process, symmetrical streamline tracing is used to symmetrically convolve the original values of all the primitive values that pass by to obtain the resulting texture. In this process, streamline tracking and convolution consume a lot of computing resources. To generate more expressive textures for vector fields with less time consumption, a novel method named random increment streamline (RIS) is put forward, which can generate streamline textures without convolution calculations. First, the mesh unit filling preprocessing (MUFP) method is presented to transform an undressed irregular grid into a special kind of regular grid named a “texture pixel”, and the point location and interpolation processes of all sampling points in the texture pixels are calculated before streamline tracking. Second, the random increment streamline method is used to generate line integral convolution style textures without any convolution calculations, thus greatly reducing the algorithm’s time consumption. Third, the vector directions at each point in the static vector field are clearly expressed using the periodic cyclic animation method. Finally, several simplifications of the RIS algorithm are discussed, which help to achieve a better visual effect with faster speed. The programming results show that the method is faster and more applicable than the traditional LIC method and provides clearer expression of the vector field.

Fast Line Integral Convolution for Arbitrary Surfaces in 3D

1997 ◽  
pp. 181-195 ◽  
Author(s):  
Henrik Battke ◽  
Detlev Stalling ◽  
Hans-Christian Hege
Keyword(s):  
Line Integral ◽  
Integral Convolution ◽  
Line Integral Convolution
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