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Information-hiding
基于 DCT(离散余弦变换 )域的信息隐藏算法是目前应用最广的变换域算法 ,此类算法的最大不足是嵌信息量小。通过分析 DCT域隐藏算法隐藏容量少的原因 ,提出了一种大容量的 DCT域信息隐藏算法。算法首先对载体图像进行频谱均匀化处理 ,然后对图像进行全局 DCT变换 ,并将隐藏信息嵌入到载体图像的低频 DCT系数上 ,信息嵌入采用分段量化的方法实现 ,提取隐藏信息时不需要原始载体图像。实验结果表明 ,该算法的嵌入容量大 ,不可感知性好。(Based on DCT (discrete cosine transform) domain information hiding algorithm is the most widely used transform domain algorithms, the largest of these algorithms is the lack of a small amount of information embedded. Hiding Algorithm for DCT domain by analyzing the hidden reasons for the low capacity, a large capacity of information hiding algorithm for DCT domain. Firstly, the spectrum of the carrier image homogenization, and then the image is a global DCT transformation, and hidden information embedded into the image of the low-frequency DCT coefficients, the information embedded in the methods used to achieve sub-quantization, extract hidden information without the original Vector image. Experimental results show that the algorithm embedding capacity, can not be perceived good.)
- 2021-04-06 09:29:03下载
- 积分:1
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DFAF
该程序是使用Matlab仿真协同通信的DF(解码转发)基本性能,基本模型S-R-D三个节点,接收端使用MRC(最大比合并)。固定DF由于SR信道的错误,其性能受到限制,在大SNR情况下不能获得有效分集。而当SR距离足够近的时候,可能获得一定的分集增益(The program is a cooperative communication using Matlab simulation DF (decode forwarding) basic performance, the basic model of the SRD three nodes, the receiver uses the MRC (maximum ratio combining). Fixed DF error of the SR channel, its performance is limited, can not obtain a valid diversity in the large SNR case. When the SR close enough, you may get a certain amount of diversity gain)
- 2012-05-14 19:39:53下载
- 积分:1
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AttDet
Toolbox for attitude determination with a multiple-antenna system using GPS
- 2013-07-11 09:22:20下载
- 积分:1
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do_OFDM0
OFDM SYSTEM SIMULATION SORCE
- 2010-06-23 09:58:42下载
- 积分:1
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LakeArea
这是利用matlab编写的求湖水面积的例程,用到了蒙特卡洛方法,希望有所帮助。(It is written using matlab routine seek the lake area, use the Monte Carlo method, hope help.)
- 2011-07-20 16:44:02下载
- 积分:1
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shock_filters
三种冲击滤波器的matlab实现与比较:Comparing 3 shock filters: Osher-Rudin [OR90], Alvarez-Mazorra [AM94] and Gilboa-Sochen-Zeevi [GSZ02eccv,GSZ04pami]. (three shocks Filter Implementation of Matlab and comparison : Comparing three shock filters : Osher- RUDIN [OR90] Alvarez-Mazorra [AM94] and Gilboa-Sochen- Ze Plav [GSZ02eccv, GSZ04pami].)
- 2021-04-21 21:28:49下载
- 积分:1
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xsk_RMA.m
合成孔径雷达 sar的 RMA算法实现(Synthetic aperture radar sar RMA algorithm)
- 2020-10-21 14:07:24下载
- 积分:1
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acquire
matlab实现对ccd相机的实时采集,gui显示图像,并进行处理(matlab to realize real-time acquisition ccd camera, gui display images, and processing)
- 2013-10-28 10:12:55下载
- 积分:1
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speaker_id
A paper that I presented on Supervisory Control and Data Acquisition (SCADA) won the second prize at the symposium conducted by the Electrical and Electronics Engineering department of the SRM University. Other topics on which I presented papers were Performance enhancement of wireless sensor networks using directional antennas, Smart card application and wireless communication. Also my research idea titled “Wavelet Based Image Compression Using SPIHT Algorithm “secured third prize in a technical festival.
- 2009-04-01 23:31:58下载
- 积分:1
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data_minning_algorith
经典数据挖掘算法,Matlab实现,是Word版。(classic data-minning algorithms using matlab.)
- 2009-12-25 21:17:27下载
- 积分:1