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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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Haar-wavelet-image--processing
说明： 用matlab编写的基于Haar小波变换的图像增强处理，同时可实现小波正变换，小波逆变换，实现小波分解与重构源代码。(Written by matlab Haar wavelet-based image enhancement processing, and can achieve positive wavelet transform, inverse wavelet transform, wavelet decomposition and reconstruction to achieve the source code.)
- 2011-04-09 20:39:46下载
- 积分：1
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wavelet_denoise
两种小波一维信号消噪的效果不错的代码，精心实验所得(one code with two effective 1D denoising ways of wavelet, has tried hard to finish it)
- 2012-03-23 19:29:15下载
- 积分：1
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Exercise2
程序的内容包括信号的DFT及IDFT处理以及数字滤波器的设计。相关的参考资料也包含在其中。(Contents of the program including the signal DFT and IDFT processing and digital filter design. Related reference information is also included.)
- 2013-09-06 08:27:18下载
- 积分：1
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mbuilder_w30wcw
分形课程设计编写的MATLAB仿真程序，代码里包含了mandbort和LOGISTIC、CNhMSb等几个集合图的小程序，还包括小波分型的itXfNAV算法，分型布朗模型也调试通过。?
(Fractal course design written in MATLAB simulation program, code contains the mandbort and LOGISTIC,CNhMSb , and several collections chart applets, including typing itXfNAV wavelet algorithm, typing Brown model also through debugging.
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- 2016-01-05 02:14:06下载
- 积分：1
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matlab_dllConversion_CPP
This is consist of converting the matlab code to dll using C++ code
- 2010-09-28 20:59:03下载
- 积分：1
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FINAL_UTKARSH
Image Encryption based on the RGB PIXEL Transposition and Shuffling
Abstract — Privacy is one of the key issues information Security addresses. Through encryption one can prevent a third party from understanding raw data during signal transmission. The encryption methods for enhancing the security of digital contents has gained high significance in the current era of breach of security and misuse of the confidential information intercepted and misused by the unauthorized parties.
This paper sets out to contribute to the general body of knowledge in the area of cryptography application and by developing a cipher algorithm for image encryption of m*n size by shuffling the RGB pixel values. The algorithm ultimately makes it possible for encryption and decryption of the images based on the RGB pixel. The algorithm was implemented using MATLAB.
Index Terms — Cryptography, Encryption, algorithm, cipher image
- 2014-09-03 02:15:29下载
- 积分：1
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fangzhen
基于MATLAB的电机仿真及调节，通过pid控制器达到位置控制精度要求(The motor based on MATLAB simulation and adjustment, the position control accuracy is achieved by pid controller)
- 2015-03-18 18:26:42下载
- 积分：1
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data
matlab计算声子晶体频响函数源代码，附计算数据案例(The matlab calculation of phononic crystal frequency response function source code, with the calculated data case)
- 2014-12-09 10:54:08下载
- 积分：1
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GNAT
matlab程序包。应用于糖基化网络的分析的程序。(matlab package. Applied glycosylation network analysis procedure.)
- 2013-04-22 14:20:32下载
- 积分：1
