本文介绍一种新颖的基于灰度积分的十字叉丝位t确定的方法，可以达到亚像素级精度，具有运算简便、适用性强、移植性好等特点。 -This paper presents a novel based on gray silk-bit integral cross fork t identified methods to achieve sub-pixel precision, with simple operation, applicability, portability is good.