Rpeak_detection

特徵粹取（feature extraction）是特徵選取（feature selection）的延伸，簡單地說，我們希望將資料群由高維度的空間中投影到低維度的空間，因此，我們必須找出一組基底向量（base）來進行線性座標轉換，使得轉換後的座標，能夠符合某一些特性。 我們可以將特徵粹取分成「包含類別資訊」和「不包含類別資訊」兩大類。包含類別資訊指的是我們已經知道哪些資料分別歸屬於哪一類；而不包含類別資訊的特徵粹取則適用於我們不知道手上的資料點分別該歸屬於哪一類，甚至連該劃分成幾類都不知道的情況。對於這兩大類資料，可以分述如下： 對於「不包含類別資訊」的資料，我們通常使用「主要分量分析」（principal component analysis），簡稱 PCA。 (Cuiqu features (feature extraction) is feature selection (feature selection) extension, simply put, we want to base the projection data the high-dimensional space to low-dimensional space, so we have to find a set of basis vectors ( base) to the linear coordinate conversion, so that after the coordinate conversion, can meet a number of features. We can feature Cuiqu into " category contains information" and " does not contain a category of information," two categories. Contains categories of information refers to what we already know what kind of information are attributed to Cuiqu features include categories of information are not applicable to information we do not know the points are in the hands of the home in which category, and even that is divided into several class do not know the situation. For these two categories of information, can be divided as follows: For information " does not include the categories of information" , we usually use the " )

it is an implementation of the algorhytm for the identification R peaks based on Pan-Tompkin

singular value decomposition

FPGA可实现的，使用cordic算法的NCO模块混频模块。该模块基于cordic原理，算法中只需要加法和移位运算既可以完成信号的混频功能(FPGA can be achieved, the use of the NCO cordic algorithm module mixing module. Cordic module based on the principle, the algorithm only needs Adder and shift operator can complete signal mixing function)

图像跟踪中的meanshift算法，通过MATLAB实现，有注释(Meanshift image tracking algorithm, MATLAB implementation, there is a comment)

i am uploading some matlab source codes

A Matlab function file calculates all paths between any two nodes of an undirected graph

Video boundary detection

风力发电PSCAD仿真用得，在正转DQ坐标下，负序变换到正序模块(PSCAD simulation used wind power in the forward DQ coordinates, the negative sequence to positive sequence module transforms)

少量投影圆形扫描法获得物象全息图的程序,可以使用3DMax生成一个三维物体的各角度投影图然后使用此程序处理,通过修改参数等可以最终生成全息图.程序测试通过,并可通过重建数值再现.(Circular scanning method to obtain a small amount of projection images hologram program, you can use 3DMax to generate a three-dimensional perspective projection of the object and then use this procedure, by modifying the parameters can ultimately generate holograms. Test procedures, and through numerical reconstruction reproduction.)