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说明：  以稀疏基有离散余弦变换基（DCT）和快速傅立叶变换基（FFT）做为稀疏基，高斯随机矩阵、部分哈达玛矩阵为测量矩阵，L1范数、正交匹配追踪算法（OMP）为重建算法进行压缩感知算法实现。 以f = cos(2*pi/256*t) + sin(2*pi/128*t)做为原信号，取原信号f的20%做为输入进行压缩感知重建。(The sparse basis includes discrete cosine transform (DCT) and fast Fourier transform (FFT) as sparse basis, Gaussian random matrix and partial Hadamard matrix as measurement matrix, L1 norm and orthogonal matching pursuit algorithm (OMP) as reconstruction algorithm. In this paper, the reconstructed signal is reconstructed by using the original sensing signal (sinf * t) as the original input signal (i.e. sinf * t * 2) + 2 * s * t * as the input signal.)

线性反投影算法（Linear Back Projection，简称 LBP）又称累加法，是最早使用的一种简单（ECT图像重建）成像算法。它将通过某点的所有投影射线进行累加，再反向估算出该点的密度值。从成像观点分析，它是不完全的雷登逆变换（完整的雷登逆变换包括微分、希尔伯特变换、反投影和归一化等步骤）。(Linear back projection algorithm (Linear Back Projection, referred LBP), also known as cumulative method, is the first to use a simple (ECT image reconstruction) imaging algorithms. It accumulates all projection rays through a point, then reverse the estimated density value of the point. From the image point of view analysis, it is not exactly the inverse transform Leiden (Leyden complete inverse transformation involving differential Hilbert transform backprojection and normalization steps, etc.).)

3D 点云建筑物分割代码3D 点云建筑物分割代码3D 点云建筑物分割代码(3D point cloud, buildign segmentation3D point cloud, buildign segmentation3D point cloud, buildign segmentation)

Image analysis to create a histogram in python language

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

说明：  双边滤波代码，双边滤波是一种非线性的方法,同时考虑到了图像的空域信息和灰度相似性,以达到保边去噪的目的.双边滤波通过空域矩阵和值域矩阵形成一个新的权重矩阵,其中空域矩阵用来模糊去噪；值域矩阵用来保护边缘.(Bilateral-Filtering code.Bilateral filtering is a nonlinear method, which takes into account the spatial information and gray similarity of the image to achieve the purpose of edge preserving denoising.The range matrix is used to protect edges.)

bezier曲面的生成算法(Algorithm)

用于全息成像的算法，采用球面波照射物体，进行图像还原，代码可运行。(The algorithm for holographic imaging uses spherical wave to illuminate objects and restore images, so the code can run.)

利用matlab实现图像的边界检测。包括sobels算子，prewitt算子，还包括图像的边界追踪(use matlab to detect the boundary of the image)

裁剪shape文件，使用idl编程实现，就是一个功能，编译以后可以直接调用这个函数(Clipping shape file, using idl programming, is a function, after compiling can directly call this function)