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sfrmat is a Matlab function that provides a spatial frequency response* (SFR) from a digital image file containing a slanted-edge feature. The specific edge-gradient algorithm follows the intent of the standard ISO 12233, developed by Technical Commi
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matlab implementation of laplacian filter in spatial and frequency domain
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该matlab代码是一个函数。它接受频域电磁场二维空间分布（用矩阵表示），包括幅度和相位，返回avi文件，显示二维电磁场的动画。-The code is a matlab function. It accepts frequency domain two-dimensional spatial distribution of electromagnetic field (with matrix), including the amplitude and phase, back avi files
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The main goal of this work is to provide a unified theory of QSTBCs for four transmit antennas and
one (or more) receive antennas. The thesis consists of two main parts: In the first part we analyze the
QSTBCs transmission without any channel kno
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BACKPROJ uses the filtered or unfiltered backprojection algorithm to perform the inverse Radon transform. The filter is designed directly in the frequency domain and then multiplied by the FFT of the projections. The projections are zero-padded to a
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文件夹LSB中是空域LSB算法程序，文件夹COX中是Cox算法主要程序，文件夹DCT中是频域加在中频的算法的程序。
步骤：把LSB，COX，DCT三个文件夹考在MATLAB目录下； 运行lsb_embed,programme,dct2_embed_mod即可。其中PSNR.m是计算峰值信噪比程序；attact.m & robust.m是攻击程序。-Content: folder LSB of spatial LSB algorithm program, folder COX Cox a
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这是用SIMULINK的S-FUNCTION方式编写的系统仿真代码，系统是基于4G网络的核心技术空时分组编码的MIMO-OFDM通信系统的，涉及到空间分集、时间分集和频率分集的有机结合，包括QPSK调制解调、IFFT调制、控制编解码、基于训练符号的信道估计等通信模块。包括main_STBC_MIMO_OFDM和training_symbol两个M文件和一个DOC文件，对各部分的都有详细的代码和注释。-It is used SIMULINK the S-FUNCTION approach to t
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This a matlab code used to obtain spatial frequency of an image and can be extremely used in image fusion aplication-This is a matlab code used to obtain spatial frequency of an image and can be extremely used in image fusion aplication
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小波变换在图像融合中的应用求出图片的均值，信噪比，空间频率，峰值信噪比等-The application of wavelet transform in image fusion, including to the application of wavelet transform in image fusion for the image of the mean, the signal-to-noise ratio, spatial frequency, the average peak sig
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matlab GUI程序，实现数字图像处理的许多功能，包括亮度变换，几何变换，空域滤波，频域滤波，小波变换，彩色图像变换，去噪，复原，压缩编码等。-matlab GUI program, many digital image processing functions, including brightness transformation, geometric transformation, spatial filtering, frequency domain filtering, wavel
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该算法是最原始的GS算法，可实现利用频域已知振幅，空域已知振幅对空域相位的复原，另包含GS算法原始文献。(The algorithm is the original GS algorithm, which can be used to recover the spatial phase with the known amplitude in the frequency domain and the spatial domain, and include the original literat
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