Automatic generation of pencil drawing using LIC

摘要: Line Integral Convolution (LIC)[Cabral and Leedom 1993]] is a texture based vector field visualization technique. Why using LIC for pencil drawing generation? Let us look at the two images shown in Figure 1. 1(a) digitized sample of real drawing. Look over it, we can perceive traces parallel strokes gray scale tone built with strokes. If any local area image, however, find that direction intensity pixels vary randomly. The variance results from interaction lead material paper. image 1(b), presents very similar features. Since an obtained by low-pass filtering white noise along streamlines field, see streamlines. On other hand, intensities within randomly as input noise. Such similarity suggests imitate drawings image.