Description: jpeg2000中的熵解码中MQ解码器，在H.264.MPEG4都有所应用，这是在ADI blackfin535平台下的-JPEG2000 Entropy decoding MQ decoder, both in H.264.MPEG4 applications, this is the ADI blackfin535 platform Platform: |
Size: 69632 |
Author:chenlei |
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Description: 基于EBCOT的图像压缩编解码源码，它是jpeg2000所采用的方法-Based on the EBCOT image compression codec source code, which is the approach adopted by JPEG2000 Platform: |
Size: 273408 |
Author:wind |
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Description: trellis coded quantizaiton 的基本范例，与JPEG2000图像压缩基础那本书提供的例子相符，这里给出仿真了那个例子的代码。-trellis coded quantizaiton the basic paradigm, and JPEG2000 image compression based on the book to provide examples of line, where the simulation examples of that code. Platform: |
Size: 1024 |
Author:林春雨 |
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Description: oJPEG2000中DWT的MATLAB实现n the use of discrete cosine transform DCT jpeg compression Matlab source, simple and practical, the Notes have a good time-DWT of MATLAB in oJPEG2000 realize n the use of discrete cosine transform DCT jpeg compression Matlab source, simple and practical, the Notes have a good time Platform: |
Size: 357376 |
Author:小户 |
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Description: Le Gall 5/3 小波变换及其反变换，可用于JPEG2000无损压缩中-Le Gall 5/3 wavelet transform and its inverse transform，which can be used for lossless compression in JPEG2000 Platform: |
Size: 1024 |
Author:zxb |
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Description: The purpose of this study is to compare between the to methods which is JPEG and JPEG2000 that are using in lossless image compression . Platform: |
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Author:mazen |
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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: |
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Author:压子 |
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Description: my project is "implementation of mini-PACS in health care system".
the image is in std DICOM format & is compressed using wavelet based JPEG2000 & transferred using JPIP to the reciever where the reciever will have an editor(that we are going to develop in visual studio C++) to view the medical image & has many options that can be performed i.e. rotation of the image, zooming , region of interest, skewing & saving in desired form. Platform: |
Size: 1817600 |
Author:nmp |
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Description: This is a first hand knowhow on how to implement JPEG2000 codec in C and Matlab, or for that matter in any other platform. This is a very good guide for beginners and has some nice references as well. Platform: |
Size: 102400 |
Author:Rabi Chowdhury |
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Description: JPEG2000 Image Compression: Efficient Methods for Encoding Regions of Interest in the Upcoming JPEG2000 Still Image Coding Standard Platform: |
Size: 192512 |
Author:hamedvahedian |
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Description: This the basic code implementing jpeg2000 in matlab
-This is the basic code implementing jpeg2000 in matlab
Platform: |
Size: 60416 |
Author:rani |
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Description: 本文所做的主要工作为：研究了JPEG2000标准的原理和基本框架，对JPEG 2000标准的核心—小波变换压缩技术进行了分析研究，概要的介绍了小波理论。对EZW算法进行了详细分析和描述，包括零树的含义、结构及其扫描方法。并应用Matlab图像处理工具箱和小波分析工具箱对图像小波变换处理，并通过接口工具Mex实现在Matlab环境下对C程序EZW编码的调用，实现了应用零树小波编码算法对图像的压缩处理，简单地实现了对JPEG 2000的仿真。-The main work that this text do is:Studied the principle and basic frames of the JPEG2000 standard, to the center of JPEG 2000- Wavelet transform compress which had been analyzed and researched .Carried on the detailed analysis and descriptions to the calculate way of EZW, include zero-tree coding, structures and it’s scans method. In Turbo C environment using C language to simulate wavelet zero-tree coding algorithm, using Matlab image processing toolbox and wavelet analysis toolbox, and using interface tool Mex to implement transferring the C program in Matlab, and implement the image compress by wavelet zero-tree transform coding methodology,and supplely implement JPEG2000. Platform: |
Size: 665600 |
Author:路敬 |
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