SEIR

使用4阶龙格库塔定理计算一阶微分方程组，方程组有3个方程(RK calculation of differential equations)

本利用MATLAB，结合aronld变换实现了基于小波分解的图像数字水印算法，经调试通过(The use of MATLAB, with aronld Transform Wavelet-based Image Watermarking by debugging through the)

说明：  dct域的图像数字水印，将水印图像信息隐藏在DCT系数的中频部分。(DCT domain image watermarking, the watermark image information hidden in the intermediate frequency part of DCT coefficients.)

边缘检测的绝好套餐，可以拿来做博士 论文了(Edge Detection of excellent packages, can be used to do a doctoral dissertation)

图像噪点检测，去除难以区分的斑点噪声及平滑图像 双曲型差分(Image denoising and hyperbolic difference)

计算img文件夹内所有图像之间的相似度，并根据相似度排序，呈现每个图片的最相似图片结果(calculate the image similarity of each pic in img filedir)

角谱法在衍射光场计算中的应用，还有一些其他方法(Calculation of diffraction light field by angular spectrum method)

衍射光学光束整形元件设计 目标：在透镜后焦面上实现图形的光强分布 实现： 1、波长、衍射光学元件口径、形状、入射波前、二维目标分布及尺寸等都可自行设定； 2、对相位进行8台阶量化，重新计算； 3、更换输出面的采样间隔，重新计算。(Design of Diffraction Optical Beam Shaping Element Objective: To realize the intensity distribution of the pattern on the focal plane behind the lens. Realization: 1. Wavelength, aperture, shape, incident wavefront, two-dimensional target distribution and size of diffractive optical elements can be set by themselves. 2. The phase is quantized by 8 steps and recalculated. 3. Replace the sampling interval of the output surface and recalculate it.)

直方图均衡化，局部直方图均衡化，直方图匹配，中值滤波，(histgram equalization,histogram matching)

此程序为摄影测量的一个小环节，主要功能是求解影像畸变差，可根据相机内参数求解，简单实用(This program is a small part of photogrammetry, the main function is to solve the differential image distortion can be solved according to the camera parameters, simple and practical)