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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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MATLAB_huitu[1].doc
说明： matlab绘图与画图仿真方法与学习，一些实例，例子，课空(matlab simulation method of drawing and drawing and learning, a number of examples, examples, class space)
- 2010-04-16 21:22:50下载
- 积分：1
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MATLAB
变结构控制仿真实例源代码，《滑模变结构控制仿真研究》随书光盘(Variable Structure Control simulation source code, " Sliding Mode Variable Structure Control Based on" CD with the book)
- 2013-08-19 20:10:06下载
- 积分：1
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fft
说明： 用于计算任意波形fft结果的Matlab工具(A matlab tool for wave fft calculating)
- 2009-08-27 09:23:24下载
- 积分：1
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kf(matlab)
一个用MATLAB写的卡尔曼滤波器算法。。
供新手学习(Using a Kalman filter algorithm written in MATLAB. . For novices to learn)
- 2011-08-25 16:30:15下载
- 积分：1
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xwy
电力系统课程设计，PQ潮流算法源程序，IEEE节点适用。(Power systems curriculum design, PQ flow algorithm source code.)
- 2014-09-20 15:42:28下载
- 积分：1
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C4_5
matlab实现决策树C4.5算法,首先利用训练数据创建决策树，再用测试数据对决策树进行剪枝。(C4.5 decision tree algorithm matlab realize, first use training data to create decision trees, and then test data for decision tree pruning.)
- 2011-11-02 14:57:31下载
- 积分：1
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ARMA_AR_MA_-kalman
卡尔曼滤波下的的ARMA、MA、AR模型，比较全面，特别适合初学者入门(Kalman filtering under the ARMA, MA, AR model, a more comprehensive, especially for beginners)
- 2013-09-17 14:55:12下载
- 积分：1
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frequencyoffsetestimateofdm
Script for computing the frequency offset from an OFDM short preamble
- 2014-02-16 02:43:39下载
- 积分：1
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Matlab7-Programming
this document analyze programing techniques for matlab 7.x .
- 2009-03-06 05:31:11下载
- 积分：1
