Description: 本人自己编写的一个图像预测编码（DPCM）的简单程序。-I own an image prepared by the Predictive Coding (DPCM) the simple procedure. Platform: |
Size: 1024 |
Author:slyang |
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Description: 本文是用线形预测编码对图像进行压缩，这种方法是中无损压缩-This article is a linear prediction coding of image compression, this method is in the lossless compression Platform: |
Size: 1024 |
Author:fayegyf |
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Description: 差分脉冲编码：通信工程中经常用到的一个实用算法。这里是matlab的实现。-Differential pulse code: Communications Engineering frequently used for a practical algorithm. Here is the realization of matlab. Platform: |
Size: 1024 |
Author:tao lan |
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Description: 摘 要
文章以空间监控系统为背景,深入研究了JPEG图像压缩标准的实现方法,并基于FPGA对其进行了实现和优化。文中给出了详细的实现方法和优化过程,测试表明达到了很好的效果。
简单介绍了有损静态图像压缩当前有两种比较流行的标准JPEG和JPEG2000。说明了用JPEG方法压缩的原因。
介绍JPEG基本原理：JPEG对灰度图像的压缩处理过程主要包括:图像分割,离散余弦变换(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脉冲编码调制(Differential Pulse Code Modulation,DPCM)对直流系数(DC),行程长度编码(Run-Length Encoding,RLE)对交流系数(AC),霍夫曼(Huffman)编码等。
JPEG标准的特点是离散余弦变换。
比较详细介绍压缩系统的构成和实现。实现提及步骤， JPEG压缩模块设计和编码模块实现细节。
-Abstract
Article in the space monitoring system for the background, in-depth study of the JPEG image compression standard implementation methods and carried out based on FPGA implementation and optimization. In this paper, a detailed method of implementation and optimization of the process, testing showed that to achieve good results.
Easy introduction of harmful static image compression has two kinds of comparisons that the current popular standard JPEG and JPEG2000. Illustrated by the reasons for JPEG compression method.
JPEG introduce the basic principles: JPEG compression of gray-scale image processing include: image segmentation, discrete cosine transform (DCT), quantization (Quantization), "Z"-shaped sort (Zigzag Scan), differential pulse code modulation (Differential Pulse Code Modulation, DPCM) on the DC coefficient (DC), Run Length Encoding (Run-Length Encoding, RLE) of the exchange coefficient (AC), Hoffman (Huffman) coding.
JPEG standard is characterized by discrete Platform: |
Size: 523264 |
Author:压子 |
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Description: DPCM 图像的线性预测编码 有完整的运行界面使用简单-DPCM image of linear predictive coding to run a complete easy to use interface Platform: |
Size: 3072 |
Author:顾艳华 |
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Description: DPCM编码是预测编码的一种,这是一个用MATLAB实现DPCM编码的方法.-the development of dpcm with matlab,DPCM is a method of cmprises of the image.This is a program of dpcm with the matlab Platform: |
Size: 3072 |
Author:张小玲 |
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Description: 用matlab语言实现的将图像的进行dpcm编码算法，之后进行图像重构，进行前后图像的对比。-With matlab language will be dpcm image coding algorithm, after the image reconstruction, the images before and after contrast.
Platform: |
Size: 392192 |
Author:周周 |
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Description: 用matlab语言实现的将图像的进行dpcm编码算法，之后进行图像重构，进行前后图像的对比。-With matlab language will be dpcm image coding algorithm, after the image reconstruction, the images before and after contrast.
Platform: |
Size: 392192 |
Author:周周 |
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Description: 本代码由matlab语言编写，实现了jpeg算法，主要为了说明基本的JPEG功能。经过DCT变化，量化，进行DPCM编码，然后之字形扫描AC系数，进行行程（LZW）编码。 显示原始图象和经编码解码后的图象，显示压缩比，并计算均方根误差。-The code consists of matlab language, to achieve a jpeg algorithm, mainly to illustrate the basic functionality of JPEG. After changing DCT, quantization, for DPCM coding, then the AC coefficients of the zigzag scanning, for stroke (LZW) coded. Shows the original image and the encoded decoded image showing the compression ratio, and calculate the mean square error. Platform: |
Size: 5120 |
Author:wyd |
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Search - DPCM image matlab