在摄影测量中, 采用人工编码点可以有效提高测量精度。为了提高二维散斑测量的精度和效率, 引入了一种有效的GSI（Geodetic Systems Incorporation）编码点。研究了GSI编码点对二维散斑测量精度和效率的影响, 采用亚像素搜索和曲面拟合相结合的方法进行数据处理,并对结果进行了分析。实物实验中引入编码标志点, 降低了测量误差, 提高了计算效率。

In photogrammetry, the measurement accuracy can be effectively improved by using manual coding. In order to improve the accuracy and efficiency of 2D speckle measurement, an effective GSI coded points are introduced. The effects of GSI coded points on the accuracy and efficiency of 2D speckle measurement were studied. The method of sub-pixel search and surface fitting was used for data processing, and the results were analyzed. In the experiments, the coded mark was introduced, which reduces the measurement error and improves the calculation efficiency.