采用最大类间方差法进行光带区域的提取，运用Zhang并行快速细化算法对光带进行细化。（2）足背点云盲区的曲线拟合修复。
OTSU algorithm is used to extract the light band area and Zhang fast parallel thinning algorithm is used to thin the light band . ( 2 ) The repair of blind data in human heel zone by curve fitting .
背云