Lecture 7.2: LIC

• Original LIC (Cabral & Leedom, SIGGRAPH '93)
  • Method
    • inputs: vector field, texture of same dimensions
    • 1D convolution of texture pixel along streamlines of vector field -> output image pixel
  • Periodic Motion     convolve with phase shifted kernels
• LIC Extentions
  • curvilinear grids (Forssell, Vis '94)
  • unsteady flows (Forssell & Cohen, TVCG June '95; Shen & Kao, Vis '97)
  • multi-frequency noise (Kiu & Banks, Vis '96)
  • oriented LIC (Wegenkittl & Groller, Vis '97)
  • perceptually-based 3D LIC (Interrante & Grosch, Vis '97)
• Comparing Flow Vis Techniques