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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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madtable
什么数据库源码太复杂 搞不懂了码重复或已经存在(What database do not understand source code is too complex to repeat the code or already exists)
- 2007-10-04 17:10:41下载
- 积分：1
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MATLAB
matlab常见的算法，很有用的，里面有很多的算法，工程人员很有用。(matlab common algorithm, very useful, there are many algorithms, engineers useful.)
- 2010-06-18 17:30:46下载
- 积分：1
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363305686contourlet_toolbox
该程序是方向滤波器工具包，其中有很多现成的滤波器，及上下采样程序。可直接调用。(The program is the direction filter kit, there are many ready-made filter, and down sampling procedure. Can be called directly.)
- 2010-12-21 17:10:06下载
- 积分：1
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sys4project
this is some codes in systems
- 2010-01-18 09:54:26下载
- 积分：1
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gaussjordan
code for gauss jordan
- 2011-05-24 01:47:47下载
- 积分：1
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kalman_filter_1
北航研究生课程，卡尔曼滤波与组合导航课程作业第一题(Buaa graduate kalman filter 1 course)
- 2021-04-05 11:59:03下载
- 积分：1
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a
说明： 跳频参数估计论文，主要是通过各种时频分析方法进行处理(The hopping parameter estimates thesis, mainly handled by a variety of time-frequency analysis methods)
- 2012-09-17 12:58:44下载
- 积分：1
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shuzi
基带信号周期采样的分析与仿真设计低通信号，对该信号进行周期采样，最后从采样数据中恢复原始信号；改变采样频率，给出相应的仿真结果；考察前端抗混叠滤波器的作用和必要性；分析后端理想恢复滤波器是否唯一。(
Periodic sampling of the baseband signal analysis and simulation to design low pass signal, the signal is periodic sampling, finally recover the original signal from the sampled data changing the sampling frequency, gives the corresponding simulation results examine the front of the role of anti-aliasing filter and necessity analysis backend ideal restoration filter is unique.)
- 2013-11-23 15:46:45下载
- 积分：1
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Radar-detection
radar detector to calculate the probability of detection
- 2016-02-25 06:58:20下载
- 积分：1
