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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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rayleighnew
这是一个瑞丽衰落信道的模型，适用于无线水声，很实用。(This is a Ruili fading channel model for wireless underwater acoustic, very practical.)
- 2020-07-04 06:40:01下载
- 积分：1
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DSP
digital signal prosecing code
- 2011-06-25 17:25:02下载
- 积分：1
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MATLAB
滤波器，关于均值和几何滤波器，以及去椒盐噪声的代码(Filter mean and geometry filter, as well as salt and pepper noise code.)
- 2012-11-11 18:46:16下载
- 积分：1
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matlabbox
说明： matlab的时频工具箱，里面有很多的例子。很有参考价值的(matlab time frequency toolbox, there are many examples. Worthy)
- 2010-05-04 19:47:06下载
- 积分：1
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jun2
this is good codes from a typical book
- 2007-04-20 18:02:47下载
- 积分：1
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generating-BPSK-signal
By using these matlab codes a simple BPSK modulation can be implemented. The format used is Polar NRZ
- 2014-02-20 19:29:04下载
- 积分：1
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fanglan_v60
是学习PCA特征提取的很好的学习资料，本程序的性能已经超过其他算法，线性调频脉冲压缩的Matlab程序。( Is a good learning materials to learn PCA feature extraction, This program has exceeded the performance of other algorithms, LFM pulse compression of the Matlab program.)
- 2016-06-20 14:51:22下载
- 积分：1
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trace
这是模拟飞机飞行的不同阶段的轨迹程序，比较全面，可用于捷联和组合导航的数据来源(This is a simulated flight trajectory of the different stages of process, more comprehensive, can be used in strapdown and navigation data sources)
- 2021-03-24 17:19:14下载
- 积分：1
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BPSK_soft
BPSK调制，1/2码率卷积码实现软解调(BPSK modulation, 1/2 rate Convolutional Codes soft demodulation)
- 2020-11-10 21:19:46下载
- 积分：1
