audio_watermarking_techniques

选择不同的滤波方式：低通、高通、带通及带阻，进行频谱分析。(Select a different filtering method: low pass, high pass, band pass and band stop, spectral analysis.)

通信系统仿真的星座图的画法问题，qpsk的仿真，图像很准确(Communication System Simulation constellation of painting issues, qpsk simulation, the image is very accurate and)

Wavelet denoising For using this code need to use signal toolbox and general toolbox in your matlab In the first part of this assignment, we asked to obtain a (black-and-white) digital image of size 512 by 512 and then generate noisy image by adding a Gaussian noise but under the condition of having SNR=20dB by select the suitable value of variance for Gaussian noise formula. Second step is performing wavelet denoising using the hard thresholding (Use the db 6 for four levels) in the condition of finding the optimal thresholding value of T in terms of the SNR obtained. It means that, we should find the highest SNR value by finding the suitable value for threshold. Then we asked to do the same process but this time using soft thresholding. Finally for the last part of question one, we should compare the results of the obtained SNR with the recommendations of 3*sigma for the hard thresholding and 3/2*sigma for the soft thresholding.

matlab例程，实现将图像样本转换成libsvm数据格式，并写入txt文件（附有测试和训练数据）(matlab routine to achieve the image samples into libsvm data format, and write txt file (with the test and training data))

机械设计的matlab源程序，很经典的啊！谢谢这个论坛！(Mechanical design matlab source code, very classic! Thanks for this forum!)

codigo MLP teste matlab

MATLAB的一些经典算法，大家看看有没有用！(MATLAB' s some classic algorithms, we see no use!)

image bit plane slice and bit plane anding

identifying shape context of the image is done and trained using a particular dataset

Reshapes vector data to grid