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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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soil_cp_min
function to calculate the specific heat of mineral soil, given the fractions of dry soil and water in the soil sample
- 2009-06-08 23:39:08下载
- 积分：1
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matlab7shili
说明： matlab实例精讲，适用于新手上路，非常全面(matlab examples Jingjiang, suitable for beginners on the road, very comprehensive)
- 2011-03-15 00:02:25下载
- 积分：1
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chouyang
说明： matlab对连续信号的抽样，对初学matlab者很有用(matlab sampling of continuous signals, is useful for beginners who matlab)
- 2009-08-24 16:44:39下载
- 积分：1
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Up_timingBYM
A timing error detector for Communication systems with simulink.
# Required versions Matlab 5.2.1, Simulink 2.2.1
# File description
1. ti_det1.m (simulink version 5.2.1)
An s-function to be used for timing detector. For detailed information, Refer to the following paper,K.H. Mueller and M. Mueller,
Timing recovery in digital synchronous data receivers,
IEEE Trans. Comun., vol COM-24, no. 5, May 1976.
2. m_delay3.m (related m-file)
An s-function operating as sample and hold with clock port.
3. test1.mdl
A timing recovery system to test the timing detector.
- 2012-01-04 13:33:58下载
- 积分：1
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xiaobo
一个小波神经网络的程序，从模拟电路的故障诊断得出，供大家学习参考(A wavelet neural network procedures, from the analog circuit fault diagnosis reached for the reference U.S. study)
- 2009-03-21 19:58:50下载
- 积分：1
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shapecontext
运用matlab，LBP局部二值模式程序的完整阐释，对学习LBP帮助效果佳(Use matlab, full interpretation of LBP Local Binary Pattern program to help good effect on learning LBP)
- 2013-12-09 16:05:29下载
- 积分：1
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Laplacian_Smoothing_Transform
基于拉普拉斯光滑算子的变换，常用于人脸识别(Smooth operator based on Laplace transform, using face recognition program)
- 2013-12-29 16:29:47下载
- 积分：1
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rddata
本程序用于Matlab对DAT格式的心电信号进行读出的功能(This procedure for Matlab on ECG DAT format to read out the functions of)
- 2009-04-02 16:14:32下载
- 积分：1
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OFMDMatlab
正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)技术以其频谱利用率高和抗频率选择性衰落强等优点，成为下一代移动通信中最具竞争力的关键技术之一(OFDM (Orthogonal Frequency Division Multiplexing, OFDM) technology for its high spectrum efficiency and strong anti-frequency selective fading, etc., to become the next generation of mobile communications in the most competitive one of the key technologies)
- 2009-06-12 14:00:59下载
- 积分：1
