function SPFRC

二维TM偏振平面波传播演进的FDTD实现。(Two-dimensional plane-wave propagation in the evolution of FDTD implementation)

在P4P问题中,当空间4个点共面时,不仅摄像机坐标系与物体坐标系之间 的旋转矩阵R和平移向量t可以线性求解,而且可以同时确定摄像机的有效焦距f和像素比例，该程序设计模拟已知相机矩阵M情况下由已知三维空间点和图像坐标情况求解相机外参数矩阵(When space four points coplanar P4P problem, not only between the camera coordinate system and the object coordinate system rotation matrix R and translation vector t Can be solved linearly, and can determine the camera s effective focal length f and pixel ratio, the program is designed to simulate a known camera matrix M Camera outside the parameters matrix case solved by the known three-dimensional space points and image coordinates)

nsct 非下采样的contourlet变换的matlab工具箱,很详细的(nsct non-sampled contourlet transform Matlab toolbox, a very detailed)

说明：  Snake模型，也就是常说得Active Contour模型的MATLAB实现，其中还包含了原文献。(Snake model, which is often put Active Contour MATLAB model, it also includes the original literature.)

绘制出lorenz系统的三维图，初始值和角度可以调整，时间长度也可以自己调整。(Three-dimensional map drawn lorenz system, the initial value and the angle can be adjusted to the length of time can also make their own adjustments.)

说明：  一种改进的susan角点检测算法，非常好用，效果明显。(An improved susan corner detection algorithm is very easy to use, the effect clearly.)

欧洲winner2的官方3D天线信道模型源程序 内包含十多种场景选择 考虑了角度扩展 k参数等(H=WIM(WIMPAR,LINKPAR,ANTPAR) is a 5D-array of channel coefficients. For explanation of the input parameter structs, see WIMPARSET, LAYOUT2LINK, LAYOUTPARSET, and ANTPARSET. H is a cell array of size K (number of links.SIZE(H{i})=[U S N T], where U is the number of MS (RX)elements, S is the number of BS (TX) elements, N is the number of paths,T is the number of time sample)

最大类间方差法是由日本学者大津(Nobuyuki Otsu)于1979年提出的,是一种自适应的阈值确定的方法,又叫大津法,简称OTSU。它是按图像的灰度特性,将图像分成背景和目标2部分。背景和目标之间的类间方差越大,说明构成图像的2部分的差别越大,当部分目标错分为背景或部分背景错分为目标都会导致2部分差别变小。(The largest between-class variance method was proposed by the Japanese scholar Nobuyuki Otsu in 1979. It is an adaptive threshold determination method, also known as the Otsu method, or OTSU for short. It is based on the grayscale characteristics of the image and divides the image into two parts: the background and the target. The larger the variance between the background and the target, the greater the difference between the two parts that make up the image. When the part of the target is wrongly divided into backgrounds or part of the background is mis-divided into goals, the difference between the two parts will be smaller.)

纹理贴图，一个花瓶的演示图，用的matlab，适合初学者。(texture mapping)

说明：  用matlab实现的EZW编码解码，对图像进行小波变换，EZW算法搜索小波系数矩阵，包括熵编码（HUFFMAN）(achieved using Matlab EZW codec, the image wavelet transform, EZW wavelet algorithm search coefficient matrix, including entropy coding (HUFFMAN))