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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.
)
- 2009-09-17 14:52:16下载
- 积分：1
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wf
说明： MATLAB求解偏微分方程 很详细 算例很多(MATLAB Solution partial differential equations in great detail)
- 2009-06-10 23:31:38下载
- 积分：1
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新建文件夹 (5)
基于MATLAB的狄克逊和拉伊达准则，可用于判断和剔除粗大误差和野值(The Dixon criterion based on MATLAB can be used to judge gross errors and outliers.)
- 2020-09-18 09:57:53下载
- 积分：1
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calculation_method_Algorithm_Design_and_Implementa
说明： 本电子书包涵了各种算法的MATLAB实现，具体包括插值方法、数值分析、常微分方程的差分法、方程求根、线性方程组的迭代法、线性方程组的直接法等等，还包括习题参考答案和MATLAB文件汇集~~(The e-book encompasses the MATLAB implementation of various algorithms, specifically including interpolation methods, numerical analysis, ordinary differential equations using finite difference method, equation Root, linear equations iterative method, the direct method of linear equations, etc. The answer also includes exercises and MATLAB files reference collection ~ ~)
- 2010-04-15 12:27:35下载
- 积分：1
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Offline
汽车发动机电子节气门离线仿真程序，采用matlab、simulink进行编写(Offline engine electronic throttle simulation program, using matlab, simulink to write)
- 2011-06-10 08:14:09下载
- 积分：1
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BS_MRVFilter_Code
MRV（磁共振静脉血管）滤波器程序源代码(MRV (magnetic resonance vein imaging) filter)
- 2013-03-22 12:18:51下载
- 积分：1
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radar-sisterm
程序是关于雷达系统设计及分析的MATLAB源程序的集大成者，具有非常重要的参考价值，涵盖面非常广，几乎涉及了所有的雷达仿真问题(Program is for the design and analysis of radar systems MATLAB source of the synthesizer, has a very important reference value, covers a very broad, involving almost all of the radar simulation problem)
- 2015-11-07 22:22:54下载
- 积分：1
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课程作业时的阴影去除算法程序
有CDF三角函数曲线/三维曲线图，均值便宜跟踪的示例，鲁棒性好，性能优越，毕业设计有用，真的是一个好程序，数值分析的EULER法。
- 2022-03-17 22:02:26下载
- 积分：1
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lda_test
Function to implement Linear Discriminant Analysis
Usage:-
[Xnew,V,mX,D] = lda(X,index,mX)
[V,D] = lda(X,index)
where:-
X = concatenated grand profile vectors (GPV)
i = class index of each vector
Xnew = new feature vectors
P = eigen vectors
mX = mean of GPV (optional in input)
D = eigen values
- 2013-07-09 15:03:43下载
- 积分：1
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string-data-encryption
Data Encryption by Matrix Multiplication
We will only use numbers 0 to 26 for the encryptive mathematics operation. Numbers from 1 to 26 are for letters from A to Z and 0 is for all non-letter characters. To minimize usage of numbers, all letters are converted to upper case. The original message is converted to number array according to the ASCII table and minus 64. We partition whole array into blocks of 8 numbers. The last block may be added several zeros. Then multiply each block by the an 8x8 matrix A which is invertible in Z27 to get cipher data. The decryption is the same process except to use its inverse matrix B. For good visual reading, we convert all non-letter characters to under score for the decryption.
- 2012-06-24 02:58:53下载
- 积分：1
