matlab_声音信号FFT

把图像导入后，可以实现对图像的huffman编码(Import the images, you can realize the image of the huffman encoding)

测距应用广泛，普通标尺测距很难达到精微测距的要求，激光在这方面有着明显的优势，本文更是运用相位来进一步提高检测的精度！(Ranging widely, ranging ordinary scale ranging requirements difficult to achieve subtle, laser has a distinct advantage in this regard, this paper is the use of phase to further improve the detection accuracy!)

说明：  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.)

fisher 的lda算法，注释非常详细清晰(fisher)

基于DCT变换的图像压缩matlab实现（附测试图）(DCT-based image compression transform matlab realize (with the test chart))

说明：  简单的graph cut 算法，初学者适合(Simple graph cut algorithm for beginners)

说明：  本代码能实现matlab图中图，可以在figure中实现局部放大图，从而实现整体趋势和局部展示的目的。(This codes can realize the MATLAB graph, iand the codes can realize the local enlargement map in the figure, so as to achieve the overall trend and the purpose of partial display.)

常用的几个图像二值化算法，包括全局的二值化和局部的二值化算法(This program contains Several commonly used image binary algorithms including global and local binary algorithms.if you want ,just download)

输入待分解图像的数据矩阵 可以显示原始图像以及其尺度2的小波分解图 小波包函数可在函数中自行修改(The input matrix of the image to be decomposed can display the original image and the wavelet packet function of the wavelet decomposition graph of scale 2 can be modified by itself in the function.)

说明：  三次B样条曲线，计算机图形学实验中的一个小程序，很有意思哦(Three B-spline curves, Computer Graphics in a small experimental procedure, very interesting oh)