kegling
1. Kegl B,Krzyzak A.Piecewise linear skeletonization using principal curves[J].IEEE Transaction on Pattern Analysis and Machine Intelligence,2002,24(1):59.
苗夺谦张红云李道国王真.基于主曲线的脱机手写数字识别[J].电子学报,2005,33(9):1639.