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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.
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- 2009-09-17 13:07:04下载
- 积分：1
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ASCAT365
ASCAT条带式卫星遥感反演的资料读取MATLAB程序(Banding type satellite remote sensing inversion data read)
- 2015-03-10 20:08:38下载
- 积分：1
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LSSVMLab-1.6
lssvm工具箱，用途广泛，可用于分类，回归，贝叶斯等(lssvm nbc)
- 2014-11-19 09:58:45下载
- 积分：1
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将地震采集的数据提取子波和计算反射系数
主要用于石油地质行业，将地震采集的数据提取子波和计算反射系数(Mainly used in petroleum geology, the seismic acquisition of the data extracted the wavelet and calculation of reflection coefficient)
- 2016-11-04 15:49:00下载
- 积分：1
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changweifenfangchengdechuzhiwenti
常微分方程的处置问题的源代码，matlab编写的，值得收藏，欢迎大家踊跃下载，为中国的科研事业做贡献(The disposition of ordinary differential equations of the source code, matlab prepared and worthy of collection, enthusiastically welcomed the U.S. download, in order to make China' s contribution to the cause of scientific research)
- 2009-04-02 17:09:28下载
- 积分：1
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danchunxingfa
单纯形法，求解线性规划问题的通用方法。单纯形是美国数学家G.B.丹齐克于1947年首先提出来的。它的理论根据是：线性规划问题的可行域是 n维向量空间Rn中的多面凸集，其最优值如果存在必在该凸集的某顶点处达到。顶点所对应的可行解称为基本可行解。单纯形法的基本思想是：先找出一个基本可行解，对它进行鉴别，看是否是最优解；若不是，则按照一定法则转换到另一改进的基本可行解,再鉴别；若仍不是，则再转换,按此重复进行。因基本可行解的个数有限，故经有限次转换必能得出问题的最优解。如果问题无最优解也可用此法判别。
(Simplex method, for solving linear programming problems common method. Simplex is the American mathematician GB Danzig in 1947 first put forward. Its theory is based on: linear programming problem feasible region is n-dimensional vector space Rn convex set in the multi-faceted, and its optimal value must be if the vertices of a convex set to achieve. Feasible solution corresponding to the vertex is called a basic feasible solution. The basic idea of the simplex method is: first find a basic feasible solution, to identify it and see whether it is the optimal solution If not, switch to another according to certain rules to improve the basic feasible solution, and then identify if still No, the re-conversion, click here to repeat. Due to the limited number of basic feasible solution, it will be converted by the finite optimal solution can be reached. If the problem can also be the optimal solution method has been applied without discrimination.
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- 2011-01-17 21:01:44下载
- 积分：1
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DTMF
利用MATLAB 仿真DTMF音频的产生及其解码的程序代码。很好！
(Simulation using MATLAB DTMF generation and decoding the audio code. Very good!)
- 2010-05-24 13:42:03下载
- 积分：1
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piddesign1
It s a set of examples in matlab to learn PID how to set it and how to tune it
- 2010-10-20 13:43:07下载
- 积分：1
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mmatlabtoolofa
matlab的模式识别工具箱箱，非常有助于开发可直接使用。
(Matlab pattern recognition toolbox box, very helpful in the development can be used directly.)
- 2012-07-16 18:00:48下载
- 积分：1
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Neural-network
Very good paper on Neural network algorithm
- 2011-09-22 09:37:28下载
- 积分：1
