该功能主要实现从bmp的彩色图片中提取图片的轮廓重绘出来。基于RGB的判断，当该点为黑色时即将其重新勾勒出来，从而达到提取的效果。-The main functions of extracted from color images of BMP image contour redrawn. Based on RGB judgment of when that point is black outline to her back, so as to achieve the effect of th