music_yj

对心电进行去噪滤波，平滑，以及阈值提取特征(Remove the noise on the ECG filtering, smoothing, and feature extraction threshold)

水果图像识别，利用MATLAB进行图形的特征提取，边缘检测，阈值分割等(Fruit and image recognition, the use of MATLAB for graphics feature extraction, edge detection, thresholding, etc.)

qpsk调制程序，通过仿真，用matlab编写的(qpsk modulation process, through simulation, written with matlab)

bpsk调制，用MATLAB进行bpsk调制。(bpsk modulation, modulation bpsk to use MATLAB.)

说明：  这是一个直方图处理的小程序,用MATLAB编的,没有用到MATLAB自身的一些函数(This is a histogram of the small program using MATLAB series, MATLAB did not use some of its own function)

Create graphs of 3 dimensional logarithmic of a function named F(Theta,Phi), theta the elevation angle and phi the rotational angle. Converts to Cartesian coordinates and plots a surface plot with color pattern radiating from the origin.

说明：  Edge detection result should be enhanced using linear method like Median filter to remove the garbage around the pupil to gain clear pupil to determine perfect centre. Get the centre of the pupil by counting the number of black pixels (zero value) of each column and row. Then get each row and column that has the maximum number of these black pixels. Then determine the center by simple calculation according to the image coordinate to set it correct on the image, consequently we can determine the radius of the pupil. Thus we can find the pupillary boundary (inner). A similar procedure is extended by using a coarse scale to locate the outer boundary (limbus) which can be apparent by using the mid-point algorithms of circle and ellipse.

利用matlab 仿真 ofdm 通信系统(ofdm by matlab)

这是一本信号与系统方向的圣经，我这里上传上来，希望对大家有用。(It is a bible in the aspect of signal and system. I upload it and want to share with people who need it and hope to help him/her.)

学习通信相关知识,帮助大家系统的学习通信相关知识，适合研究生及以上学历的读者。(learn communicate technogly .)