抄録
In flow visualization, methods of exploring a scalar field have been almost established. On the other hand, visualization of a vector field has not been settled yet. It seems that particle tracking methods are useful to visualize the vector field. The methods are efficient to show a large scale and a small scale structure in the field clearly. However, initial positions of the particles sometimes affect a visualized pattern. Also, when a particle lies on another one, it becomes difficult to display the particle and to recognize the pattern. In this paper, we consider an enhancement of particle tracking methods against those problems. First, we are attempt to reduce the dependency of the initial position. Second, a vector field is visualized by the line integral convolution method (LIC), and some drawbacks of LIC are found. Finally, a novel technique called as PEM (Pixel Exposure Method) is proposed.
