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jpeg压缩matlab源代码。由均匀量化和huffman编码组成,简洁易懂,jpeg compression matlab source code. By the uniform quantization and huffman coding components, concise and understandable
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1.首先通过DCT变换去除数据冗余;
2.使用量化表对DCT系数进行量化;
3.对量化后的系数进行Huffman编码。
具体源程序由主程序及两个子程序(DCT量化、Huffman编码)组成:
,1. First of all, through the DCT transform to remove data redundancy 2. The use of quantization table of quantization DCT coefficients 3. Of quanti
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图像JPEG压缩算法,由8*8DCT变换,调用量化表进行量化,最后由Huffman编码完成算法,JPEG image compression algorithm, the 8* 8DCT transform, quantization table calls to quantify, and finally completed by the Huffman coding algorithm
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基于MATLAB实现图像线性量化的源码,通过输入量化参数实现不同等级量化-Based on MATLAB to achieve linear quantitative image source, by entering the quantization parameters to achieve different levels of quantization
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产生长度为1000的标准正太分布的随机信号,画出时域波形及频谱;
采用u=255的非均匀PCM编码,每符号为8bit,画输入-输出关系图;
计算信号量化噪声比(SQNR);
信道误码率为10-3;
解码,并画出u律反变换后的信号时域波形及频谱。
扩展要求:
采用均匀PCM、量化级数可变、信道误码率可变。
- have a standard len
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利用Matlab仿真脉冲编码调制(PCM)及A律、μ律PCM对声音进行压缩编解码过程。
脉冲编码调制(PCM,Pulse Code Modulation)是一种将模拟语音信号转换成数字信号的编码方式。波形编码器的作用是对采样后的信号样本进行量化和编码。从数学上来看,量化过程就是把一个连续幅度值的无限数集合映射成一个离散幅度值的有限数集合,编码就是用一组二进制数来表示这些映射后的有限数。国际标准化的PCM采用折叠二进制码,符合长途电话质量。根据量化方法的不同,PCM可分为均匀量化PCM和对数
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有关标量量化的lloyd-max方法及信噪比,信息熵,最小平方距离的度量方法-The scalar quantization of the lloyd-max method and signal to noise ratio, information entropy, least squares method of distance measurement
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使用matlab实现的矢量量化的LBG算法,内有文档说明-Matlab achieved using the LBG vector quantization algorithm, there are documented
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毕业设计做的...用LBG算法实现矢量量化的算法..matlab-Designed to do graduate ... the LBG algorithm using vector quantization algorithm .. matlab
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L3_1.m: 純量量化器的設計(程式)
L3_2.m: 量化造成的假輪廓(程式)
L3_3.m: 向量量化器之碼簿的產生(程式)
L3_4.m: 利用LBG訓練三個不同大小與維度的碼簿並分別進行VQ(程式)
gau.m: ML量化器設計中分母的計算式(函式)
gau1.m: ML量化器設計中分子的計算式(函式)
LBG.m: LBG訓練法(函式)
quantize.m:高斯機率密度函數的非均勻量化(函式)
VQ.m: 向量量化(函式)
L3
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The QccPackSPECK module is a optional addon to the QccPack library for
the quantization, compression and coding of data. -The QccPackSPECK module is a optional addon to the QccPack library for
the quantization, compression and coding of data.
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This matlab code read bmp file and seperate it to R,G,B components. And also quantize the image.
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45666031LBG-Vector-Quantization in speaker recognition
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They are the programs of uniform quantization and non-uniform quantization.
In digital signal processing, quantization is the process of approximating ("mapping") a continuous range of values (or a very large set of possible discrete values) by
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用LBG算法对图像进行矢量量化,并实现了图像解码,图像解码视觉效果良好。-realized image vector quantization employed the LGB algorithm, and achieved the image decoding, image decoding visual effect is good.
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QUANTIZATION MATLAB CODE
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信号去噪的基本步骤:
(1)信号的小波分解;
(2)小波分解高频系数的阈值量化;
(3)信号的小波重构。使用分解的低频系数以及阈值量化后的高频系数进行小波重构。
-The basic steps of signal denoising:( 1) of the wavelet decomposition of signals ( 2) the high frequency coefficients of wavelet decomposition threshold quan
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spatio-temporal Volume Local Phase Quantization (vLPQ)
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Wind量化平台-用户手册 matlab版本(Wind quantization platform - User Manual)
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Color Reduction and Quantization using k-Means, Fuzzy Clustering (FCM), and SOM Neuarl Network in MATLAB
In this post, we are going to share with you, the MATLAB implementation of Color Quantization and Color Reduction of images, using intelligent c
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