D-S证据理论数据融合，有较好的参考价值，结合PCA的尺度不变特征变换(SIFT)算法，有详细的注释，应用小区域方差对比，程序简单，插值与拟合，解方程，数据分析。- D-S evidence theory data fusion, There are good reference value, Combined with PCA scale invariant feature transform (SIFT) algorithm, There are detailed notes, Application of small area variance comparison, simple procedures, Interpolation and fitting, solution of equations, data analysis.