Visualizing vector fields using line integral convolution and dye advection
Han‐Wei Shen, Christopher R. Johnson, Kwan‐Liu Ma · 1996
We present local and global techniques to visualize three-dimensional vector field data. Using the Line Integral Convolution (LIC) method to image the global vector field, our new algorithm allows the user to introduce colored "dye" into the vector field to highlight local flow features. A fast algorithm is proposed that quickly recomputes the dyed LIC images. In addition, we introduce volume rendering methods that can map the LIC texture on any contour surface and/or translucent region defined by additional scalar quantities, and can follow the advection of colored dye throughout the volume. 1 Introduction Visualizing vector field data is challenging because no existing natural representation can visually convey large amounts of three-dimensional directional information. In fluid flow experiments, external materials such as dye, hydrogen bubbles, or heat energy are injected into the flow. The advection of these external materials can create stream lines, streak lines, or path lines t...