ex4

说明：  利用matlab进行三维重建，比较复杂，使用程序可以简单的进行三维重建(Three-dimensional reconstruction using matlab is more complicated, and the program can be used for simple 3D reconstruction.)

基于silvaco平台 利用athena软件做的一款PN结二极管的二维图仿真(Based on silvaco platform using the officer software do a 2 d figure of the p-n junction diode simulation)

说明：  实现区域生长、分水岭算法的matlab文件(Region growing, watershed algorithm matlab file)

说明：  采用水平集（level set）方法和mumford-shah图像分割模型的图像分割matlab源代码。(horizontal Collection (level set) methods and Mumford- shah Segmentation Model Image segmentation Matlab source code.)

用于计算在三维点云处理过程中的局部点云面积估算，精度很高。(Used to calculate the three-dimensional point cloud processing local point cloud area estimation accuracy is very high.)

制作人工散斑模拟图，很实用，可直接实用。(Production of artificial speckle simulation maps, very practical, direct and practical.)

可以利用MATLAB编写GDSII图形文件，GDSII是一种时序提供格式，用于设计工具、计算机和掩膜制造商之间进行半导体物理制板的数据传输。得以普遍应用，成为半导体工业最常用的文件格式。在成为工业标准之前，GDSII最初始于GE Calma公司。GDSII格式对分布于每一个制作层的电路单元进行全面描述。这种格式是基于二进制的独立平台。电路单元可包含诸如多晶硅（两维域），连线和其他用于分级设计的单元件。(The program can be used to write GDSII format file. GDSII stream format, common acronym GDSII, is a database file format which is the de facto industry standard for data exchange of integrated circuit or IC layout artwork. It is a binary file format representing planar geometric shapes, text labels, and other information about the layout in hierarchical form. The data can be used to reconstruct all or part of the artwork to be used in sharing layouts, transferring artwork between different tools, or creating photomasks.)

shepp-logan的2D直接傅里叶反变换法(Shepp-logan 2-D Direct Fourier Inverse Transform Method)

PLY文件的读取和写入程序：PLY文件是一个三维图形的数据存储格式，包括了三维曲面上所有采样点的坐标，以及所有采样点间的网络拓扑(A program which can read and write a PLY file)

说明：  灰度图像分割，二维大津法或二维最大类间方差法(2D Maximum Between Cluster Variance)