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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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hanzaozhengxianboyusanjiaoboquzao
含噪的三角波和正弦三角波去噪问题，简便的程序，直接在matlab中打开即可(meaningful)
- 2009-09-12 07:19:35下载
- 积分：1
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lpc_basedon_matlab
lpc线性预测编码的matlab实现。其中包含原始数据文件和合成语音文件。程序合理易懂。(linear predictive coding of lpc matlab implementation. Which contains the original data file and the synthesized voice files. Procedures reasonably easy to understand.)
- 2020-12-15 22:49:13下载
- 积分：1
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TPDSPlab2
signal specter
- 2011-02-04 03:05:26下载
- 积分：1
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cuzaojidaima
粗糙集属性约简的matlab小程序以及一些可读文献~~~~(Rough set attribute reduction procedures as well as some small matlab readable literature ~ ~ ~ ~)
- 2011-08-31 16:23:59下载
- 积分：1
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Untitled
svm 分类小例子，准确率较高。有可能是样本较少或者是样本数据取得太好的缘故。(svm classification)
- 2014-12-09 20:43:50下载
- 积分：1
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RBF-network-sliding
基于RBF网络补偿的控制输入受限滑模控制(Compensation control based on RBF network sliding mode control input constraints)
- 2013-11-11 13:42:58下载
- 积分：1
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Pattern_Recognition_Fourth_Edition
MATLAB 模式识别的外文书籍,特别经典的研究生用书(Books in foreign languages MATLAB pattern recognition, especially the classic book Graduate)
- 2010-11-10 12:57:51下载
- 积分：1
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damping
用matlab编了一个damping程序，希望大家有帮助(Matlab made with a damping process, I hope everyone has to help)
- 2008-06-01 11:35:19下载
- 积分：1
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ofdm_256_awgn
Program for ofdm modulation using awgn channel
- 2010-05-12 16:54:22下载
- 积分：1
