Speckle-Noise-Filter

小波与近似熵相结合的机械振动噪声信号分析 1 近似熵算法： 2 快速近似熵算法： 3 复morlet小波实验程序： 4谐波小波实部与虚部的程序： 5谐波小波分析时频图： (Harmonic wavelet combined with approximate entropy mechanical vibration and noise signal analysis)

说明：  这是一个求时间序列时延(delay time)的matlab源代码。(This is a time series for time-delay (delay time) of the matlab source code.)

matlab图像预处理一些算法的实现，如巴特沃斯低通滤波器的实现等(MATLAB image processing algorithm implementations, such as Butterworth low-pass filter realization)

Robot path planning including clothoid to help conceptor to make his own trajectory implementation

3-D FDTD code of patch antenna in free space with Mur s boundary condition

用matlab读取.dxf文件。本站原有代码dxf2coord_20.m中对于圆弧只能读出其圆心坐标及半径，缺少圆弧起始角及终止角，并不能在应用中实际用起来。修改后可以读出圆弧的起始角和终止角(the script can offer start angle and end angle of an arc,which are unable to access in an earlier script dxf2coord_20.m 。)

说明：  利用matlab进行数字图像处理，滤除图像中的外来干扰，效果不错，但最好进行后期处理。(Digital image processing using matlab, external interference in the filtered image, the effect is good, but the best post-processing.)

用matlab写的的循环码编解码程序，同时还有系统仿真的性能分析(Matlab write the loop encoding and decoding procedures, as well as system simulation and performance analysis)

说明：  本文在DCT噪声信号模型研究的基础上,提出了一种新的音频水印嵌入位置选择策略和一个应用该策略的自适应音频水印算法. 通过定义DCT系数的噪声敏感度,建立了水印嵌入位置和嵌入水印后的音频信号的听觉感知性之间的关系,根据音频水印的不可听性的要求选择最优的嵌入位置,然后调节水印强度来满足鲁棒性的要求,从而最大程度地保持音频水 印的不可听性和鲁棒性,为解决音频水印嵌入过程中不可听性和鲁棒性之间的矛盾提供了一种策略.(Though m any w orks in the literature agree that w aterm ark should be em bedded in the middle2fre2 quency coefficients or percep tually significant components, how to determ ine the position em bedded has no universal definition. A new em bedding strategy and an algorithm app lying the strategy are p roposed for audio w aterm arking in DCT dom ain based on research of DCT noise m odal. B y defining a noise sensitivity vector, a m ath relationship betw een the w aterm ark em beddable position and the audible quality of the audio file w ith w aterm ark is set up.)

简单的单位转换系统，用matlab进行实现，直接在matlab下运行(Simple unit conversion system using matlab to achieve a direct run in matlab)