中文说明： matlab程序运行时导入数据文件作为输入参数，实现了图像的灰度化并进一步用于视频监视控，关于超声波倒车雷达测距的，二维声子晶体FDTD方法计算禁带宽度的例子,插值与拟合，解方程，数据分析，包括主成分分析、因子分析、贝叶斯分析。
English Description：
MATLAB import data file when the program is run as an input parameter, realization of image gray-level and further used for video surveillance and control, ultrasonic reverse radar ranging, two-dimensional Photonic Crystal FDTD method for calculating band example of interpolation and fitting, solving equations, data analysis, such as principal component analysis, factor analysis, Bayesian analysis.