chapter7

用matlab实现了zigzag算法，实现功能：对任意维数的图片都都能进行加密和解密(Using matlab to achieve a zigzag algorithm functions: For any dimension pictures are able to encrypt and decrypt)

Computational Colour Science Using MATLAB

the calculation of imp response from the frequecny response in power delay profiel calculations

用matlab实现各种数值计算的源代码，对于需要数值计算的非常有参考价值。(To achieve a variety of numerical calculation with matlab source code for the numerical calculation needed a very good reference material.)

算法CARTfunctions,该算法主要用于数据挖掘领域.(CARTfunctions algorithm, the algorithm used mainly for data mining areas.)

双馈风机换流器及其控制，无错误，能出波形(Double-fed fan converter and its control, no error, can produce waveform)

此程序用提升法实现第二代小波变换 用的是非整数阶小波变换 采用时域实现,步骤先列后行 正变换：分裂，预测，更新； 反变换：更新，预测，合并 只做一层（可以多层，而且每层的预测和更新方程不同）(This procedure achieved by lifting the second generation wavelet transform with a non-integer order wavelet transform time-domain realization of transformation steps, then over are: split, predict, update inverse transform: Update, forecasting, consolidation only a layer of ( can be multi-layer, and each prediction and update equations are different))

设计一个60阶的滤波器，要求设计的滤波器0~π/8的幅度为1，在π/8~2π/8的幅度为1/2，在2π/8~4π/8的幅度响应为1/4，在4π/8~6π/8的幅度响应为1/6，在6π/8~π的响应为1/8，并且画出理想滤波器和设计得到的理想滤波器的幅度频率和响应进行比较(Design of a 60-order filter designed filter 0 ~~ π/8 the amplitude is 1, the π/8 ~ 2π/8 the amplitude is 1/2, 2π/8 ~ 4π/8 amplitude response is 1/4, 4π/8 ~ 6π/8 the amplitude response of 1/6, 6π/8 ~ π response of 1/8, and draw the ideal filters and design of an ideal filter amplitude frequency and response to compare)

增强lee滤波，可以直接用。用来观察lee滤波对图像的处理结果。是个函数，需要调用。(Enhance the lee filter, can be directly used. Lee filter used to observe the image processing results. Is a function, you need to call.)

说明：  用稀疏表示人脸识别，其中在求解l1范数的部分的matlab源码。(Sparse representation for face recognition, solving l1 norm matlab source.)