read_image (Bk45, 'bk45')
*带通滤波
bandpass_image (Bk45, Lines, 'lines')
threshold (Lines, Region, 128, 255)
*计算划痕
skeleton (Region, Skeleton)
dev_set_colored (12)
*生成轮廓
gen_contours_skeleton_xld (Skeleton, Contours, 5, 'filter')
dev_display (Bk45)
dev_display (Contours)