Mutualcoherenceofagivenmatrix

基于LSB图像隐藏系统的设计与实现，LSB算法代码，信息隐藏攻击算法，DCT域的隐藏以及数字水印。(LSB based image hiding system design and implementation, LSB algorithm code, information hiding attack algorithm, DCT hiding and digital watermarking domain.)

The Matlab function RGB() converts a color index (whole number from 1-21), English name of a color (string), or RGB triple with whole number components in {0, 1, ..., 255} into an RGB triple with real-valued components in [0,1]. RGB() allows the user to access a set of 21 colors via their common English names. For eight of these colors that have more than one common name, the program accepts alternative names, reducing the memory burden on the user.

此程序先由Butterworth高通滤波器滤波图像,后用sobel算子程序进行边缘检测,效果不错!(this procedure first Butterworth high-pass filter images, After segmentation operator subroutine used for edge detection, good results!)

programer test is peogramming

说明：  OFDM是将高速串行数据分成成百上千路并行数据,并分别对不同的载频进行调制,这种并行传输体制大大扩展了符号的脉冲宽度,提高了抗多径衰落的性能。同时,在传统的频分复用方法中,各子载波之间的频谱互不重叠,频谱利用率较低。而采用OFDM技术,一个OFDM符号之内包括多个经过调制的子载波的合成信号,每个子载波在频谱上相互重叠,这些频谱在整个符号周期内满足正交性,因而在接受端可以保证无失真恢复,从而大大提高频谱利用率。(OFDM divides high-speed serial data into hundreds of parallel data channels and modulates different carrier frequency separately. This parallel transmission system greatly expands the pulse width of symbols and improves the performance of anti-multipath fading. At the same time, in the traditional method of Frequency Division multiplexing, the spectrum between the sub-carriers does not overlap each other, the spectrum utilization ratio is low. In the case of OFDM, an OFDM symbol consists of multiple modulated sub-carriers, each of which overlaps in the spectrum, which is orthogonal throughout the symbol period, thus, no distortion recovery can be ensured at the receiving end, thus greatly improving the spectrum utilization ratio.)

相机检校的另一方法Tsai，在MATLAB中实现，可以与张正友的方法作比较。(Another method of camera calibration Tsai, in MATLAB to achieve, you can and Zhang are the Friends of the method for comparison.)

说明：  kalman滤波器的试验程序，非常好用，可以试验下(kalman filter testing procedures, very easy to use, you can test under)

关于混沌系统同步的滑模变结构仿真，采用s函数，很有意义。(Synchronization of chaotic systems on sliding mode simulation, using the s function, it makes sense.)

说明：  VMD程序，用于轴承、齿轮等振动信号的分解、降噪和重构，实现故障诊断(VMD program is used for decomposition, noise reduction and reconstruction of vibration signals such as bearings and gears to realize fault diagnosis)

IET Radar, Sonar & Navigation Series 雷达杂波建模 Weibull 分布(IET Radar, Sonar & Navigation Series Radar Clutter Modeling Weibull distribution)