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This paper addresses the problem of segmenting an image into regions. We defi ne a predicate for measuring the evidence for a boundary between two regions using a graph-based representation of the image. We then develop an effi cient segmentation algorithm based on this predicate, and show that although this algorithm makes greedy decisions it produces segmentations that satisfy global properties. We apply the al-gorithm to image segmentation using two diff erent kinds of local neighborhoods in constructing the graph, and illustrate the results with both real and synthetic images. The algorithm runs in time nearly linear in the number of graph edges and is also fast in practice. An important characteristic of the method is its ability to preserve detail in low-variability image regions while ignoring detail in high-variability regions.

runge kutta method.................

说明：  基于石油钻井神经网络PID仿真器模型，该模型验证了该算法的可行性和有效性(BTF simulink fangzhen)

仿真 谐波仿真 谐波仿真 谐波仿真 谐波仿真 谐波(simulink is ok)

MIE散射，金属球光散射计算程序,可自行编写修改输入参数的可靠程序( light scattering of metal balls calculation program by mie)

基于MATLAB的心音信号的特征提取研究与实现(Research and Implementation characteristics extracted heart sound signal based on MATLAB)

针对滚动轴承故障信号具有非平稳、非高斯的特点，提出了将时域分析与小波分析相结合的方法对滚动轴承进行故障诊断。在研究不同信号分析方法理论的基础上，以滚动轴承外圈故障振动信号为例，采用多种信号处理方法进行了分析。结果表明，各种分析方法在分析轴承故障时的特点各不相同，在实际使用中，可将时域分析与小波分析综合使用，实现轴承状态的实时监测与故障的准确定位。(For rolling bearing fault signals have non-stationary, non-Gaussian, we proposed the time-domain analysis and wavelet analysis method of combining the rolling element bearing fault diagnosis. In the study of different analytical methods based on the theory of signal to the outer ring rolling bearing fault vibration signal, for example, using a variety of signal processing methods are analyzed. The results show that a variety of analytical methods in the analysis of the characteristics of bearing failure vary, in actual use, can be time-domain analysis and synthesis using wavelet analysis, to achieve accurate positioning of the bearing condition monitoring and real-time fault.)

线性调频信号的速度多普勒模糊函数，有三维以及二维截面图(The speed of linear frequency modulation signal doppler fuzzy function, there are three dimensional and two dimensional section graph)

关于Trigger子系统的一个仿真模型，自己用simulink建的。(Trigger subsystem simulation model, built with simulink.)

说明：  This code is related to the course Digital Communications. It simulates a communication system which uses AWGN and 16QAM