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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.
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- 2009-09-17 14:52:16下载
- 积分：1
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torsion
solving torsion proble by FEM
- 2011-01-20 19:01:28下载
- 积分：1
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Pack Kurtogram V4
说明： kurtogram是一种四阶谱分析工具，用于检测和表征信号中的非平稳性。可用于轴承的故障诊断(The kurtogram is a fourth-order spectral analysis tool elaborated for detecting and characterising nonstationarities in a signal. It relies on the assertion that each type of transient is associated with an optimal (frequency/frequency resolution) dyad (f ; Df) which maximises the kurtosis. The Fast Kurtogram computes the kurtogram over a grid that finely samples the (f ; Df) plane. Its complexity is on the order of N log N.
This is the "plain vanilla" code used in paper:
J. Antoni, Fast Computation of the Kurtogram for the Detection of Transient Faults, Mechanical Systems and Signal Processing, Volume 21, Issue 1, January 2007, Pages 108-124.)
- 2020-10-30 22:20:01下载
- 积分：1
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numlabtb
说明： matlab环境下bezier曲线,希望大家都多多共享出来,就好了(Matlab environment bezier curves, I hope you share a lot out!)
- 2006-05-02 13:55:17下载
- 积分：1
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Convolutional--algorithms
卷积码编译码matlab实现，译码采用viterbi译码，并且右边验证误码率的程序，本人毕业论文，高分通过，因为网上不少程序有误，特此上传，供大家参考学习。(Convolutional code encoding and decoding matlab implementation, decoding using viterbi decoding and bit error rate of the right of verification procedures, I thesis, score by as many online programs are wrong, hereby uploaded for your reference study.
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- 2011-11-12 21:53:12下载
- 积分：1
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PSNR
psnr source code matlab
- 2013-05-14 21:01:43下载
- 积分：1
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DSP3
IIR平滑器的作用和特点演示，包括b取何值时，信号部分通过系统后不变？噪声部分是否放大了？计算NRR和系统频响
(IIR smoother presentation of the role and characteristics, including the b take what value, the signal in part through the system after the change? Whether the part of amplified noise? NRR and system frequency response calculation)
- 2010-03-11 21:43:07下载
- 积分：1
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Example_chapt3
说明： 离散信号处理举例，开发环境是MATLAB。(Candle散ulcers信Jie braise shake bird)
- 2008-09-03 21:27:49下载
- 积分：1
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StudentVersionOfMatlab
This is a useful book for beginners in MATLAB
- 2012-09-05 09:01:29下载
- 积分：1
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OFDM
说明： 对OFDM（正交频分复用）的调制和解调过程的仿真(On OFDM (Orthogonal Frequency Division Multiplexing) modulation and demodulation process simulation)
- 2011-02-24 10:13:30下载
- 积分：1
