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数字水印预处理Arnold置乱程序。在水印的嵌入与提取中用来置乱图像。(Digital Watermarking Arnold scrambling pretreatment procedures. In the watermark embedding and extraction of images used to scrambling.)

This is to experiment with feature detection and tracking algorithms. In particular, the reader should gain intuition on the role of various design parameters such as the size of the windows for selection and tracking, the SSD criterion and thresholds.

层次分析法与熵权法的代码，比较详细具体，有注解，实用(AHP code and the Entropy method, more detailed and specific comments, practical)

caft230 for send the quest

energy detection algorithm.

说明：  模拟退火的实现代码，给出具体的案例分析。可以按照不同需要对程序体进行改进(The realization of simulated annealing code, gives specific case studies. According to the different needs of the program to improve body)

PSO algorithmcode1.rar(PSO algorithmcode1.rar it is good)

一个按照时间抽取的基2快速傅里叶变换（基2FFT-DIT）。输入倒位序，输出自然顺序。(A time taken by the base 2 fast Fourier transform (base 2FFT-DIT). Enter the inversion sequence, the output of natural order.)

it is a matlab code for audio gain controller

增强，计算目标个数及周长增强，计算目标个数及周长(Increased number of objects and calculate the circumference increased number of objects and calculate the perimeter)