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jpeg_encode+decoderhojoon
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 13:07:04下载
- 积分：1
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MATLAB7_0
说明： 关于matlab7的介绍与初步使用,适合新用户上手,阅读需下载ssread阅读器(About matlab7 introduction and initial use for new users get started, read the reader need to download ssread)
- 2010-04-14 09:57:29下载
- 积分：1
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MATchaoliu
matlab进行潮流计算的一个工具，在文件内。(matlab a tool for power flow calculation, in the document.)
- 2011-05-11 11:26:19下载
- 积分：1
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overlay
function Px=overlay(N,omega,A,sigma,num)
OVERLAY Forms multiple power spectral density estimates.
-------
USAGE Px=overlay(N,omega,A,sigma,num)
Calculates the periodogram using an ensemble of realizations
of a process consisting of a sum of complex exponential in
white noise.
N : length of the signal
omega : vector containing the sinusoid frequencies
A : vector containing the sinusoid frequencies
sigma : the variance of the white noise
num : size of the ensemble (number of periodograms)
- 2012-04-18 10:00:02下载
- 积分：1
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EMDandIMF
可用来直接运行的基于matlab的EMD执行语句，请各位多交流(dfefe )
- 2012-04-21 21:57:39下载
- 积分：1
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matlab-2
MATAL的一个练习包 用于新手的初次尝试(MATAL of a practice package for the novice first attempt)
- 2012-07-10 00:06:26下载
- 积分：1
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震合成记录的正演模拟程序
本程序是地震合成记录的正演模拟程序，包括实现三层地质模型(This program is being synthetic seismograms modeling program, including the realization of three geological model)
- 2014-12-22 10:53:14下载
- 积分：1
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youcheng
对于时间序列平稳性分析的游程检验法，对于数据平稳性分析有很强的实用性(For stationary time series analysis runs test method for stability analysis of the data has a strong practical)
- 2013-11-22 10:00:57下载
- 积分：1
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matlab-program-and-gui-design
matlab中一些基本的gui界面设计及操作(Some basic matlab gui interface design and operation)
- 2013-12-14 19:47:38下载
- 积分：1
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MATLABcase2660
《MATLAB程序设计教程》PPT,适合初学者学习,和大家共享一下()
- 2008-05-08 11:57:11下载
- 积分：1
