United States Patent: 7,532,752

Inventors: Wen; Fang, Xu; Ying-Qing, Shum; Heung-Yeung, Vronay; David P.

发明人：闻芳、徐迎庆、沈向洋、Vronay; David P.

Abstract: A non-photorealistic technique is described for transforming an original image into a sketch image. The technique includes: segmenting the original image into plural regions to produce a segmented image, wherein the regions are demarcated by respective boundaries; shrinking a boundary of at least one of the plural regions in the segmented image to produce a boundary-shrunk image; and modifying at least one color in the boundary-shrunk image to produce the sketch image.