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rgbquadtreehojoon
This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
(This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
)
- 2009-09-17 14:52:16下载
- 积分：1
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DatClusts
matlab clustering tool
- 2010-09-17 16:56:07下载
- 积分：1
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PSO
粒子群算法优化多峰函数，对初学者而言是很有帮助的一个东东，希望大家能够喜欢(Particle swarm optimization multimodal function, it is helpful for a beginner stuff, hope you will enjoy)
- 2013-07-19 11:19:23下载
- 积分：1
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tuxiangpeizhun
此程序是在MATLAB下进行图像配准，通过归一化互相关来确定图像配准的区域。(This program is for image registration in MATLAB, by normalized cross-correlation to determine the image registration area.)
- 2014-12-12 17:54:57下载
- 积分：1
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Transmission-Model
无线传感器网络定位用到的无线传输模型
Regular Model, Logarithmic Attenuation Model, DOI Model, RIM Model
(Wireless sensor network localization using wireless transmission model, Regular Model, Logarithmic Attenuation Model, DOI Model, RIM Model
Achieve functional distance and transmission attenuation swap
~~~~~~~~~~~~~~~~~~~~~~Regular Model~~~~~~~~~~~~~~~
In this model, the radio range is a circle
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ReceivedSignalStrength=SendingPower-PathLoss
e.g, RSS=Pt-Pl(d0)-10*η*log10(dist/d0)
Pt:transmit power
pl(d0):the pass loss for a reference distance of d0
ηis the path loss exponent
above parameters are saved in ../Parameters_Of_Models.mat
dist:distance between sender and receiver(m)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
typical value:Pt=0-4dBm(max),Pl(d0)=55dB(d0=1m),η(2~4)=4(indoor,outdoor)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~Logarithmic Attenuation Model~~~~~~~~~
In this model, the radio range is a circle
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ReceivedSignal)
- 2013-08-31 18:59:05下载
- 积分：1
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hilibert
希尔伯特变换matlab程序在异步电动机故障诊断中的应用例子程序(Hilbert transform matlab program in asynchronous motor fault diagnosis example program)
- 2013-10-23 12:31:37下载
- 积分：1
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MATLAB--hecheng
matlab开发环境下的语音波形的合成与识别，非常有用的一段程序的描述(Description waveform synthesis and voice recognition matlab development environment, very useful for some programs)
- 2013-12-25 16:57:25下载
- 积分：1
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MultiScale_Structural_Similarity_Index
需要参考图像的图像质量评测算法(MS-SSIM)(Multi-Scale Structural Similarity Index (MS-SSIM). )
- 2010-10-28 23:16:56下载
- 积分：1
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DLLTest200
DLLTest200.rar,动态库的程序，写的简单易懂，可以参考(DLLTest200.rar，special for dll)
- 2013-12-15 12:23:18下载
- 积分：1
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vcARDvERSIONeXCEPTION
CharArrayWriter extends Writer Source Code for Andriod.
- 2013-12-30 19:26:07下载
- 积分：1
