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dwprotected
Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection and authentication of multimedia data in a networked environment, since it makes possible to identify the author, owner, distributor or authorized consumer of a document.
A new watermarking technique to add a code to digital images is presented: the method operates in the frequency domain embedding a pseudo-random sequence of real numbers in a selected set of DCT coefficients. Watermark casting is performed by exploiting the masking characteristics of the Human Visual System, to ensure watermark invisibility. The embedded sequence is extracted without resorting to the original image, so that the proposed technique represents a major improvement to methods relying on the comparison between the watermarked and original images.
- 2009-07-13 12:14:31下载
- 积分：1
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simulink-QPSK
对QPSK解调系统完美建模，其中通过改变码元速率和载波频率，再计算相应的环路滤波器的参数，即可实现多种QPSK模型的解调，且该模型可通过SYSTEM generator进行量化，从而生成ISE能直接使用的HDL代码。
matlab版本：2007a(Perfect for QPSK demodulation system modeling, which by changing the symbol rate and carrier frequency, and then calculate the corresponding parameters of the loop filter, QPSK demodulator can achieve a variety of models, and the model can be quantified by SYSTEM generator thereby generating ISE HDL code can be used directly.
matlab version: 2007a)
- 2013-12-17 23:32:35下载
- 积分：1
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eigenface
matlab人脸识别，有测试库.效果一般仅供参考(matlab face recognition, there are test library. effect of general informational purposes only)
- 2015-03-18 20:06:21下载
- 积分：1
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Speech_DTW
this is a matlab code for computing DTW(dynamic time warping) for speech processing applications.
- 2010-01-24 04:06:33下载
- 积分：1
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select_best
antenna pic chengxu chuli
- 2011-09-21 17:02:04下载
- 积分：1
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hengdingshuchudianya
以固定电压输出的逆变器的matlab仿真源文件，我初学逆变器仿真的时候做的，对初学者肯定有用(The fixed voltage three-phase output inverter matlab simulation source, beginner when I do , for some students new to the inverter simulation certainly useful)
- 2014-09-24 04:09:30下载
- 积分：1
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guass
guass迭代法，是数值分析中很重要的一种，源码为其在matlab中的实现。
(guass iterative method, numerical analysis is a very important one in the matlab source code for its realization.)
- 2009-02-12 00:11:36下载
- 积分：1
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CT
说明： 为断层扫描（CT）源程序，用于多点激励接受断层扫描。(To tomography (CT) of the source, for multi-point excitation accept tomography.)
- 2014-09-01 11:07:17下载
- 积分：1
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papr
ofdm系统基于matlab的papr仿真程序，包括三种方法(ofdm matlab-based simulation papr)
- 2021-03-23 15:49:15下载
- 积分：1
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BP2Aperture
移动通信MIMO信道建模中会用到的小程序。(Will be used in mobile communications in MIMO channel modeling program.)
- 2012-11-05 21:09:57下载
- 积分：1
