bwtraceboundary

卡方检验，通过matlab输入理论频数，直接得出检验结果(Chi-square test, through matlab input frequency theory, the test results obtained directly)

说明：  这是matlab编写的三个程序的代码以及最后结果，是综合实验时做的(This is three programs written in matlab code and the final result is to do comprehensive experiments)

MATLAB GUI操作相关指南，有详细的例程，方便初学者学习及探索。对于新手而言，有较高的使用价值。提供了较为简洁的开发平台手册。通俗易懂，方便使用。(MATLAB GUI related to the operation guide, with detailed routines, easy for beginners to learn and explore. For starters, there is a higher use value.)

Generates a 5hz sine wave signal on matlab

非持续性CAMA是一种冲突避免的CSMA协议，如果终端检测到信道状态空闲，则立即进行数据传输，而信道状态忙，则停止载波监听，并随机在等待一段时间后再进行载波监听。(Non-durable CAMA avoid CSMA protocol is a kind of conflict, if the end channel state idle, detected immediately for data transmission, the channel state is busy, stop the carrier sense, and random carrier sense of the reentry after waiting for a period of time. )

matlab code from in the problem in numerical caculation.

利用matlab实现的基于离散小波变换的数字水印代码(Matlab realize the use of discrete wavelet transform-based digital watermarking code)

说明：  实现了对函数的奇偶分频的频谱分析，DFT什么的，包括了4个基础的信号处理实验代码(To achieve parity of function analysis of frequency spectrum)

请用多层感知器（MLP）神经网络误差反向传播（BP）算法实现异或问题（输入为，要求可以判别输出为0或1），并画出学习曲线。其中，非线性函数采用S型Logistic函数。(Please use the Multilayer Perceptron (MLP) back propagation neural network (BP) algorithm XOR problem (input is required to determine the output is 0 or 1), and draw the learning curve. Among them, the non-linear function using S-type Logistic functions. )

read image by matlab in processing