DirectionalFilters

matlab某大学电子信息学院选修课复习内容，共享。(matlab a review of Electronic Information School Elective content, sharing.)

主要是MATLAB与VC的链接，是从别人哪里弄过来的，和大家一起分享一下！希望对大家可以有用!~~(MATLAB and VC are the main link where other people get from the back, and to share with everyone! Hope everyone can be useful! ~ ~)

说明：  在matlab中四阶Runge-Kutta法求解常微分方程(Runge-Kutta)

在机动目标跟踪中，机动目标模型是机动目标跟踪的基本要素之一，一般希望机动目标模型能准确表征目标机动时的各种运动状态。比较常用的模型有匀速运动(CV)模型、匀加速运动(CA) 模型、时间相关模型（Singer）和机动目标“当前”统计模型。上述模型均采用机动频率表征目标的机动情况。在应用当中，通常采用固定的机动频率，这就表示机动目标的机动时间是一定的，而实际上机动目标的机动时间是不断变化的，也就是说机动频率是不断变化的，采用固定机动频率必然会带来误差。采样周期在0.5—2S时，机动频率越小跟踪精度越高[1]，但机动频率仍然是固定值。本文提出的基于神经网络的机动频率自适应调整方法可以使机动频率随机动而变化，从而提高状态估计的准确性，提高跟踪精度。本文将小波神经网络用于机动目标跟踪中机动频率的自适应调整，该算法对机动目标“当前”统计模型中的机动频率进行实时修改, 从而自适应的改变机动频率,使跟踪算法与目标的真实状态更接近。该算法采用小波神经网络的离线训练，实时性好。(The maneuver of the maneuvering target is uncertain. The maneuvering frequency is constantly changeable, but traditionally it is beforehand determined as a constant based on the target state estimation in the state model of the maneuvering target. The maneuver of the maneuvering target makes the kinematics equation of the target model mismatch with the practical motion model and the tracking error will be increased. Based on the advantages of the self-learning, the rapid convergence rate and the nonlinear approximation ability of the wavelet neural network, it was put forward to be used in the field of target tracking in the paper. The new residual is used as the input of the wavelet neural network, the output of the network is used to adjust adaptively the maneuvering frequency of the CS model. The algorithm is more close to the real state of the target. The simulation results showed that tracking error can be reduced and the tracking accuracy can be improved.)

说明：  双坐标曲线的MATLAB程序。需要的来下载。(Dual process MATLAB curve coordinates. Need to download.)

viterbi decoding and encoder... not working

基于小波的纹理分析及其在FPC金面缺陷检测中的应用(Wavelet-based texture analysis and its application in FPC gold surface defect detection)

Calculate geodesic path

形心法测距测速，给出了在没有噪声和有噪声两种情况下用形心法测出的数据，还有关键图形(Loading range speed, without noise and noise are given in both cases using fractal method to measure the data, and key graphics)

HCircle问题求解算法, 程序, 源码, 采用Matlab实现(HCircle problem solving algorithm, program, source code, using Matlab Implementation)