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DCT-and-Image-Compression
DCT and Image Compression
In the JPEG image compression algorithm, the input image is divided into
8-by-8 or 16-by-16 blocks, and the two-dimensional DCT is computed for each
block. The DCT coefficients are then quantized, coded, and transmitted. The
JPEG receiver (or JPEG file reader) decodes the quantized DCT coefficients,
computes the inverse two-dimensional DCT of each block, and then puts the
blocks back together into a single image. For typical images, many of the
DCT coefficients have values close to zero these coefficients can be discarded
without seriously affecting the quality of the reconstructed image.
The example code below computes the two-dimensional DCT of 8-by-8 blocks
in the input image, discards (sets to zero) all but 10 of the 64 DCT coefficients
in each block, and then reconstructs the image using the two-dimensional
inverse DCT of each block. The transform matrix computation method is used.
- 2014-01-28 16:55:07下载
- 积分：1
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bintprog
0-1规划的matlab算法，功能很全，可以自动设置很对变量。不过是英文的，入口函数bintprog（）( BINTPROG solves the binary integer programming problem
min f *X subject to: A*X <= b,
Aeq*X = beq,
where the elements of X are binary
integers, i.e., 0 s or 1 s. )
- 2013-03-31 16:23:04下载
- 积分：1
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filter
这是我自己搭建的射频中经常用到的T型滤波器，希望对大家有所帮助！(This is my own radio frequency often used to build a T-type filter, we want to help!)
- 2013-05-24 21:32:34下载
- 积分：1
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PSO-image-segment
混沌粒子群算法用于图像分割，程序已调试好，并用多种图像提供使用。分割效果显著。(Chaotic particle swarm optimization algorithm for image segmentation, the program has been debugged, and use a variety of images available. Segmentation effect is remarkable.)
- 2020-08-08 18:18:31下载
- 积分：1
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RadarwithMatlab
radar信号处理（MATLAB版第二版），书中介绍中带有详细代码，希望对初学者有用~(radar signal processing (MATLAB version of the second edition), the book describes in detail with the code, I hope useful for beginners ~)
- 2014-05-16 13:59:03下载
- 积分：1
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MATLAB_S-Function
S-function的编写指导,非常不错，内容很详尽(guides for using S-function)
- 2010-11-12 14:09:03下载
- 积分：1
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apsk-ruanpanjue-
apsk软判决算法的仿真，根据星座特点进行算法的简化，减低复杂度(Simulation apsk soft decision algorithm based on the characteristics of the constellation simplified algorithm to reduce the complexity of)
- 2013-12-05 18:02:41下载
- 积分：1
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ACO-for-TSP
a ant colony optimization(aco) for traveling salesman problem(TSP).implementation in matlab.type of file:m file
- 2013-08-04 11:04:24下载
- 积分：1
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LDPC-code-construction
LDPC code construction
- 2014-01-14 04:14:36下载
- 积分：1
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rddata
Matlab function to read ECG signals.
- 2011-01-17 22:16:53下载
- 积分：1
