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This handbook presents a thorough overview in 45 chapters from more than 100 renowned experts in the field. It provides the tools to help overcome the problems of video storage, cataloging, and retrieval, by exploring content standardization and other content classification and analysis methods. The challenge of these complex problems make this book a must-have for video database practitioners in the fields of image and video processing, computer vision, multimedia systems, data mining, and many other diverse disciplines. Topics include video segmentation and summarization, archiving and retrieval, and modeling and representation.
標(biāo)簽：
handbook
chapters
presents
overview
上傳時(shí)間：
2013-12-15
上傳用戶：yuzsu
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MPEG-2壓縮編碼技術(shù)原理應(yīng)用
MPEG是運(yùn)動(dòng)圖像專家組(Moving Picture experts Group)的簡(jiǎn)稱，其實(shí)質(zhì)上的名稱為國際標(biāo)準(zhǔn)化組織（ISO）和國際電工委員會(huì)（IEC）聯(lián)合技術(shù)委員會(huì)（JTC）1的第29 分委員會(huì)的第11工作組，即ISO/IEC JTC1/SC29/WG11，成立于1988年。其任務(wù)是制定世界通用的視音頻編碼標(biāo)準(zhǔn)。因?yàn)椋瑥V播電視數(shù)字化所產(chǎn)生的海量數(shù)據(jù)對(duì)存儲(chǔ)容量、傳輸帶寬、處理能力及頻譜資源利用率提出了不切合實(shí)際的要求，使數(shù)字化難以實(shí)現(xiàn)。為此，該專家組基于幀內(nèi)圖像相鄰像素間及相鄰行間的空間相關(guān)性和相鄰幀間運(yùn)動(dòng)圖像的時(shí)間相關(guān)性，采用壓縮編碼技術(shù)，將那些對(duì)人眼視覺圖像和人耳聽覺聲音不太重要的東西及冗余成分拋棄，從而縮減了存儲(chǔ)、傳輸和處理的數(shù)據(jù)量，提高了頻譜資源利用率，制定了如表1所示的一系列MPEG標(biāo)準(zhǔn),使數(shù)字化正在變?yōu)楝F(xiàn)實(shí)。其中，MPEG-2是一組用于視音頻壓縮編碼及其數(shù)據(jù)流格式的國際標(biāo)準(zhǔn)。它定義了編解碼技術(shù)及數(shù)據(jù)流的傳輸協(xié)議；制定了MPEG-2解碼器之間的共同標(biāo)準(zhǔn)（MPEG-2編碼器之間尚無共同標(biāo)準(zhǔn)）。本文以MPEG-2的系統(tǒng)、MPEG-2的編碼、及MPEG-2的應(yīng)用為題，討論MPEG-2壓縮編碼技術(shù)。
標(biāo)簽：
MPEG
experts
Picture
Moving
上傳時(shí)間：
2015-12-12
上傳用戶：ruan2570406
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H.264/AVC, the result of the collaboration between the ISO/IEC
Moving Picture experts Group and the ITU-T Video Coding
experts Group, is the latest standard for video coding. The goals
of this standardization effort were enhanced compression efficiency,
network friendly video representation for interactive
(video telephony) and non-interactive applications (broadcast,
streaming, storage, video on demand). H.264/AVC provides
gains in compression efficiency of up to 50％ over a wide range
of bit rates and video resolutions compared to previous standards.
Compared to previous standards, the decoder complexity
is about four times that of MPEG-2 and two times that of
MPEG-4 Visual Simple Profile. This paper provides an overview
of the new tools, features and complexity of H.264/AVC.
標(biāo)簽：
the
collaboration
between
experts
上傳時(shí)間：
2013-12-30
上傳用戶：dongbaobao
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H.264/AVC is the current video standardization project of the ITU-T Video Coding
experts Group (VCEG) and the ISO/IEC Moving Picture experts Group (MPEG). The
main goals of this standardization effort are to develop a simple and straightforward
video coding design, with enhanced compression performance, and to provide a
鈥渘etwork-friendly鈥?video representation which addresses 鈥渃onversational鈥?(video
telephony) and 鈥渘on-conversational鈥?(storage, broadcast or streaming) applications.
標(biāo)簽：
standardization
the
current
experts
上傳時(shí)間：
2014-01-02
上傳用戶：SimonQQ
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C language book, a very nice book in c language for beginners and experts
標(biāo)簽：
language
book
beginners
experts
上傳時(shí)間：
2013-12-13
上傳用戶：zhangjinzj
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ddk examples by experts
標(biāo)簽：
examples
experts
ddk
by
上傳時(shí)間：
2014-12-07
上傳用戶：familiarsmile
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An ebook describing how to solve every possible sudoku puzzle set with tricks and tips from experts.
標(biāo)簽：
describing
possible
experts
puzzle
上傳時(shí)間：
2013-12-17
上傳用戶：ynzfm
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JPEG2000是由ISO/ITU-T組織下的IEC JTC1/SC29/WG1小組制定的下一代靜止圖像壓縮標(biāo)準(zhǔn).與JPEG(Joint Photographic experts Group)相比,JPEG2000能夠提供更好的數(shù)據(jù)壓縮比,并且提供了一些JPEG所不具有的功能[1].JPEG2000具有的多種特性使得它具有廣泛的應(yīng)用前景.但是,JPEG2000是一個(gè)復(fù)雜編碼系統(tǒng),目前為止的軟件實(shí)現(xiàn)方案的執(zhí)行時(shí)間和所需的存儲(chǔ)量較大,若想將JPEG2000應(yīng)用于實(shí)際中,有著較大的困難,而用硬件電路實(shí)現(xiàn)JPEG2000或者其中的某些模塊,必然能夠減少JPEG200的執(zhí)行時(shí)間,因而具有重要的意義.本文首先簡(jiǎn)單介紹了JPEG2000這一新的靜止圖像壓縮標(biāo)準(zhǔn),然后對(duì)算術(shù)編碼的原理及實(shí)現(xiàn)算法進(jìn)行了深入的研究,并重點(diǎn)探討了JPEG2000中算術(shù)編碼的硬件實(shí)現(xiàn)問題,給出了一種硬件最優(yōu)化的算術(shù)編碼實(shí)現(xiàn)方案.最后使用硬件描述語言(Very High Speed Integrated Circuit Hardware Description Language,VHDL)在寄存器傳輸級(jí)(Register Transfer Level,RTL描述了該硬件最優(yōu)化的算術(shù)編碼實(shí)現(xiàn)方案,并以Altera 20K200E FPGA為基礎(chǔ),在Active-HDL環(huán)境中進(jìn)行了功能仿真,在Quartus Ⅱ集成開發(fā)環(huán)境下完成了綜合以及后仿真,綜合得到的最高工作時(shí)鐘頻率達(dá)45.81MHz.在相同的輸入條件下,輸出結(jié)果表明,本文設(shè)計(jì)的硬件算術(shù)編碼器與實(shí)現(xiàn)JPEG2000的軟件:Jasper[2]中的算術(shù)編碼模塊相比,處理時(shí)間縮短了30﹪左右.因而本文的研究對(duì)于JPEG2000應(yīng)用于數(shù)字監(jiān)控系統(tǒng)等實(shí)際應(yīng)用有著重要的意義.
標(biāo)簽：
JPEG
2000
FPGA
算術(shù)編碼
上傳時(shí)間：
2013-05-16
上傳用戶：671145514
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MPEG（Moving Picture experts Group）和VCEG（Video Coding experts Group）已經(jīng)聯(lián)合開發(fā)了一個(gè)比早期研發(fā)的MPEG 和H.263 性能更好的視頻壓縮編碼標(biāo)準(zhǔn)，這就是被命名為AVC（Advanced Video Coding），也被稱為ITU-T H.264 建議和MPEG-4 的第10 部分的標(biāo)準(zhǔn)，簡(jiǎn)稱為H.264/AVC 或H.264。這個(gè)國際標(biāo)準(zhǔn)已經(jīng)與2003 年3 月正式被ITU-T 所通過并在國際上正式頒布。為適應(yīng)高清視頻壓縮的需求，2004 年又增加了FRExt 部分；為適應(yīng)不同碼率及質(zhì)量的需求，2006 年又增加了可伸縮編碼 SVC。
標(biāo)簽：
264
碼流
上傳時(shí)間：
2013-11-19
上傳用戶：dancnc
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The #1 Step-by-Step Guide to labviewNow Completely Updated for labview 8!
Master labview 8 with the industry's friendliest, most intuitive tutorial: labview for Everyone, Third Edition. Top labview experts Jeffrey Travis and Jim Kring teach labview the easy way: through carefully explained, step-by-step examples that give you reusable code for your own projects!
This brand-new Third Edition has been fully revamped and expanded to reflect new features and techniques introduced in labview 8. You'll find two new chapters, plus dozens of new topics, including Project Explorer, AutoTool, XML, event-driven programming, error handling, regular expressions, polymorphic VIs, timed structures, advanced reporting, and much more. Certified labview Developer (CLD) candidates will find callouts linking to key objectives on NI's newest exam, making this book a more valuable study tool than ever.
Not just what to d why to do it!
Use labview to build your own virtual workbench
Master labview's foundations: wiring, creating, editing, and debugging VIs; using controls and indicators; working with data structures; and much more
Learn the "art" and best practices of effective labview development
NEW: Streamline development with labview Express VIs
NEW: Acquire data with NI-DAQmx and the labview DAQmx VIs
NEW: Discover design patterns for error handling, control structures, state machines, queued messaging, and more
NEW: Create sophisticated user interfaces with tree and tab controls, drag and drop, subpanels, and more
Whatever your application, whatever your role, whether you've used labview or not, labview for Everyone, Third Edition is the fastest, easiest way to get the results you're after!
標(biāo)簽：
Everyone
LabVIEW
for
英文
上傳時(shí)間：
2013-10-14
上傳用戶：shawvi
