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Description: DIGITAL IMAGERY is pervasive in our world today. Consequently,
standards for the efficient representation and
interchange of digital images are essential. To date, some of
the most successful still image compression standards have resulted
from the ongoing work of the Joint Photographic Experts
Group (JPEG). This group operates under the auspices of Joint
Technical Committee 1, Subcommittee 29, Working Group 1
(JTC 1/SC 29/WG 1), a collaborative effort between the International
Organization for Standardization (ISO) and International
Telecommunication Union Standardization Sector (ITUT).
Both the JPEG [1–3] and JPEG-LS [4–6] standards were
born from the work of the JPEG committee. For the last few
years, the JPEG committee has been working towards the establishment
of a new standard known as JPEG 2000 (i.e., ISO/IEC
15444). The fruits of these labors are now coming to bear, as
JPEG-2000 Part 1 (i.e., ISO/IEC 15444-1 [7]) has recently been
approved as a new international standard.-DIGITAL IMAGERY is pervasive in our world t oday. Consequently, standards for the efficient representation an d interchange of digital images are essential. To date, some of the most successful still image compres sion standards have resulted from the ongoing w contex of the Joint Photographic Experts Group (JP EG). This group operates under the auspices of J oint Technical Committee 1 Subcommittee 29. Working Group 1 (JTC 1/SC 29/WG 1) a collaborative effort between the Internatio 44 Organization for Standardization (ISO) an d Stan International Telecommunication Union dardization Sector (ITUT). Both the JPEG [1-3] and JPEG-LS [4-6] standards were born from the w contex of the JPEG committee. For the last few years , the JPEG committee has been working towards th e establishment of a new
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Author: slam |
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Description: The JasPer Project is an open-source initiative to provide a free software-based reference implementation of the codec specified in the JPEG-2000 Part-1 standard (i.e., ISO/IEC 15444-1).
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Author: pierre |
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Description: JPEG 2000正式名称为ISO 15444，是一种基于离散小波变换的新型图像压缩方法，与基于离散余弦变换的JPEG压缩方法相比较，具有多分辨率表达、更好的去相关能力、高压缩比、按视觉模型量化等优点，并同时提供无损和有损压缩算法
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Size: 762896 |
Author: zhenzhen |
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Description: 当今影像数字化产生的位图影像，往往是以每像素三字节的格式表示的，这导致了大而难处理的位图。为减少这些存储开发了很多压缩系统。由Compu Serve开发的GIF（Graphic Interchange Format）系统通过把可能分配给一个像素的颜色数目减少到仅为256个的方法来研究问题，这意味着每个像素的值可以用一个字节而不是用三个字节表示。256个可能的像素值中的每一个都可借助于一个叫调色板的表与一个红、绿、蓝的组合联系起来。通过改变一个影像所对应的调色板，就可以改变影像中的颜色。
GIF影像调色板中的某一个颜色常被指定“透明”值，这意味着允许通过任何被指定了这个“颜色”的区域显示背景。
另一种彩色影像的压缩技术是JPEG，它是由JOINT Photographic Experts Group(ISO中的一个组织)开发的。JPEG已经成为一个表示彩色图像的有效标准。
JPEG标准实际上包括了若干影像表示方法，每一个都有自己的目标。
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Size: 98053 |
Author: 李明 |
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Description: It s a JPEG decoder and need a lot of promotion and correction,This distribution contains the sixth public release of the Independent JPEG
Group s free JPEG software. You are welcome to redistribute this software and
to use it for any purpose, subject to the conditions under LEGAL ISSUES, below.
Serious users of this software (particularly those incorporating it into
larger programs) should contact IJG at jpeg-info@uunet.uu.net to be added to
our electronic mailing list. Mailing list members are notified of updates
and have a chance to participate in technical discussions, etc.
This software is the work of Tom Lane, Philip Gladstone, Jim Boucher,
Lee Crocker, Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi,
Guido Vollbeding, Ge Weijers, and other members of the Independent JPEG
Group.
IJG is not affiliated with the official ISO JPEG standards committee.
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Size: 647354 |
Author: Ken |
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Description: 新一代静止图像压缩编码标准JPEG2000概述* 丁贵广 郭宝龙 西安电子科技大学 机电工程学院 西安 710071 guiguangd@263.net 摘要随着多媒体技术应用的不断增加图像压缩技术不仅要求具有较高的压缩性能而且还要求有新的特征来满足一些特殊的要求为此国际标准化组织ISO指定了新一代静止图像压缩标准JPEG2000本文通过对JPEG2000中核心算法EBCOT的详细分析阐述了JPEG2000压缩标准新的特征以及与现有压缩标准相比显示出来的优越性能 关键词JPEG2000小波变换EBCOT彩色图像编码-new generation of static image compression coding standard JPEG2000 outlined* Ding Guang Guo Baolong Xi'an University of Electronic Science and Electrical and Mechanical Engineering College, Xi'an 710071 guiguangd@263.net Abstract multimedia technology with the increasing use of image compression technology not only requires a high compression performance, but also requires new features to meet the special requirements for this ISO designation of a new generation of still image compression standard JPEG2000 Based on the core JPEG2000 algorithm EBCOT the detailed analysis described JPEG2000 compression standard and the new features with the existing compression standard compared to demonstrate the superiority can Keywords JPEG2000 wavelet transform EBCOT Color Image Coding
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Author: 景仁 |
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Description: DIGITAL IMAGERY is pervasive in our world today. Consequently,
standards for the efficient representation and
interchange of digital images are essential. To date, some of
the most successful still image compression standards have resulted
from the ongoing work of the Joint Photographic Experts
Group (JPEG). This group operates under the auspices of Joint
Technical Committee 1, Subcommittee 29, Working Group 1
(JTC 1/SC 29/WG 1), a collaborative effort between the International
Organization for Standardization (ISO) and International
Telecommunication Union Standardization Sector (ITUT).
Both the JPEG [1–3] and JPEG-LS [4–6] standards were
born from the work of the JPEG committee. For the last few
years, the JPEG committee has been working towards the establishment
of a new standard known as JPEG 2000 (i.e., ISO/IEC
15444). The fruits of these labors are now coming to bear, as
JPEG-2000 Part 1 (i.e., ISO/IEC 15444-1 [7]) has recently been
approved as a new international standard.-DIGITAL IMAGERY is pervasive in our world t oday. Consequently, standards for the efficient representation an d interchange of digital images are essential. To date, some of the most successful still image compres sion standards have resulted from the ongoing w contex of the Joint Photographic Experts Group (JP EG). This group operates under the auspices of J oint Technical Committee 1 Subcommittee 29. Working Group 1 (JTC 1/SC 29/WG 1) a collaborative effort between the Internatio 44 Organization for Standardization (ISO) an d Stan International Telecommunication Union dardization Sector (ITUT). Both the JPEG [1-3] and JPEG-LS [4-6] standards were born from the w contex of the JPEG committee. For the last few years , the JPEG committee has been working towards th e establishment of a new
Platform: |
Size: 1074176 |
Author: slam |
Hits:
Description: The JasPer Project is an open-source initiative to provide a free software-based reference implementation of the codec specified in the JPEG-2000 Part-1 standard (i.e., ISO/IEC 15444-1).-The JasPer Project is an open-source initiative to provide a free software-based reference implementation of the codec specified in the JPEG-2000 Part-1 standard (ie, ISO/IEC 15444-1).
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Size: 6731776 |
Author: pierre |
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Description: 基于J PEG2000的数字水印蒋勇(西南科技大学计算机科学与技术学院四川绵阳621010)【摘 要】：网络技术的发展为数字作品的传播提供了方便，同时也引发了对数字作品的盗版现象，如何保护数字作品的版权日益受到关注：JPEG2000作为ISO推荐的新一代静止图像压缩标准，由于其感兴趣区域编码，渐进传输等优越性能，有着广阔的应用前景。本文旨在研究保护JPEG2000图像作品版权的数字水印方案。-based digital watermarking Jiang Yong (Southwest University of Science and Technology Computer Science and Technology Institute in Sichuan Mianyang 621010) Abstract : the development of network technology for the transmission of digital works to provide a convenient, also triggered the right of pirated digital works, how to protect the copyright of digital works have been a growing concern : ISO JPEG2000 as recommended by the new generation of still image compression standard, because of its interest in regional coding, progressive transmission, and other advantages can be as broad application prospects. This paper is to study the protection of JPEG2000 images copyright of digital watermarking programs.
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Author: ghostsx |
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Description: JPEG 2000正式名称为ISO 15444，是一种基于离散小波变换的新型图像压缩方法，与基于离散余弦变换的JPEG压缩方法相比较，具有多分辨率表达、更好的去相关能力、高压缩比、按视觉模型量化等优点，并同时提供无损和有损压缩算法-JPEG 2000 is formally known as ISO 15444, is a discrete wavelet transform based on a new type of image compression methods, and based on the discrete cosine transform JPEG compression method, compared with the expression of multi-resolution, better related to ability, high compression ratio, by the visual model to quantify the advantages, as well as providing lossless and lossy compression algorithms
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Size: 762880 |
Author: zhenzhen |
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Description: 当今影像数字化产生的位图影像，往往是以每像素三字节的格式表示的，这导致了大而难处理的位图。为减少这些存储开发了很多压缩系统。由Compu Serve开发的GIF（Graphic Interchange Format）系统通过把可能分配给一个像素的颜色数目减少到仅为256个的方法来研究问题，这意味着每个像素的值可以用一个字节而不是用三个字节表示。256个可能的像素值中的每一个都可借助于一个叫调色板的表与一个红、绿、蓝的组合联系起来。通过改变一个影像所对应的调色板，就可以改变影像中的颜色。
GIF影像调色板中的某一个颜色常被指定“透明”值，这意味着允许通过任何被指定了这个“颜色”的区域显示背景。
另一种彩色影像的压缩技术是JPEG，它是由JOINT Photographic Experts Group(ISO中的一个组织)开发的。JPEG已经成为一个表示彩色图像的有效标准。
JPEG标准实际上包括了若干影像表示方法，每一个都有自己的目标。
Platform: |
Size: 97280 |
Author: 李明 |
Hits:
Description: It s a JPEG decoder and need a lot of promotion and correction,This distribution contains the sixth public release of the Independent JPEG
Group s free JPEG software. You are welcome to redistribute this software and
to use it for any purpose, subject to the conditions under LEGAL ISSUES, below.
Serious users of this software (particularly those incorporating it into
larger programs) should contact IJG at jpeg-info@uunet.uu.net to be added to
our electronic mailing list. Mailing list members are notified of updates
and have a chance to participate in technical discussions, etc.
This software is the work of Tom Lane, Philip Gladstone, Jim Boucher,
Lee Crocker, Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi,
Guido Vollbeding, Ge Weijers, and other members of the Independent JPEG
Group.
IJG is not affiliated with the official ISO JPEG standards committee.
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Size: 678912 |
Author: Ken |
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Description: JPEG 2000 国际标准系列 ISO/IEC FCD15444-1~6-JPEG 2000 international standard series ISO/IEC FCD15444-1 ~ 6
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Size: 3887104 |
Author: 李才伟 |
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Description: JPEG国际标准，ISO/IEC 10918，CCITT T.81，用于灰度图与真彩图的静态图像压缩的国际标准-JPEG international standard, ISO/IEC 10918, CCITT T.81, grayscale and true color for static image compression international standards
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Size: 1090560 |
Author: 李才伟 |
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Description: JPEG 2000 FINAL COMMITTEE DRAFT VERSION 1.0, 16 MARCH 2000
THE ISO AND ITU WILL PROVIDE COVER PAGES.-JPEG 2000 FINAL COMMITTEE DRAFT VERSION 1.0, 16 MARCH 2000THE ISO AND ITU WILL PROVIDE COVER PAGES.
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Size: 1112064 |
Author: xhusan |
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Description: 新一代高速气象卫星数据通讯协议，支持高速云图发送以及JPEG压缩编码。和最新的风云系列格式基本一致。-Global Specification for Low Rate and High Rate Information Transmission
(LRIT/HRIT) [AD.1] has been agreed by the Co-ordination Group for Meteorological
A Satellites (CGMS). The global specification is based on the ISO standard 7498 (OSI
Reference Model) [RD.1] and the CCSDS recommendations of Advanced Orbiting Systems
(AOS) [RD.2]. It defines the structure and the formatting of the LRIT/HRIT files and the
processing and transport protocols of all OSI layers applicable to all geostationary
meteorological spacecraft.
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Author: zhfjyq |
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Description: JPEG 2000 IMAGE CODING SYSTEM:
COMFORMANCE TESTING-JPEG 2000 IMAGE CODING SYSTEM:
COMFORMANCE TESTINGSTUDY DOCUMENT JPEG 2000 PART IV CD, JULY 2001
THE ISO AND ITU WILL PROVIDE COVER PAGES
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Size: 234496 |
Author: xu |
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Description: 显示JPEG内容 包括照片创建时间、相机类型、曝光、ISO、光圈、快门-Read JPEG Info
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Author: DynamicRen |
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Description: 由HP公司开发的无损和近无损图像方法，满足ITU-T Rec. T.87|ISO/IEC 14495-1压缩标准-JPEG-LS
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Author: zhangbulian |
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Description: ISO/IEC image compression standard JPEG-XR document .
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Author: ajitd |
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