此程序用于展示一个算法，画个图形，无论大小、位置，只要形状一样就能通过检测。可以用于一些要求不是很高的认证身份场合，用到了相似三角形的相关原理。【站长我实在不知道选哪个类别，帮忙一下好不】-This program could show an algorithm, that if you draw a graphic, even any size or location, when the shape is same, you will pass it. Used for some low requirement authening.