DC 欄位 | 值 | 語言 |
dc.contributor | 國立臺灣大學電機工程學系暨研究所 | zh_TW |
dc.contributor.author | 貝蘇章 | zh_TW |
dc.creator | 貝蘇章 | - |
dc.date | 2001-07-31 | - |
dc.date.accessioned | 2006-07-25T09:01:05Z | - |
dc.date.accessioned | 2018-07-06T13:28:49Z | - |
dc.date.available | 2006-07-25T09:01:05Z | - |
dc.date.available | 2018-07-06T13:28:49Z | - |
dc.date.issued | 2001-07-31 | - |
dc.identifier | 892213E002159 | zh_TW |
dc.identifier.uri | http://ntur.lib.ntu.edu.tw//handle/246246/7770 | - |
dc.description.abstract | 隨著影像資料的漸趨龐大,一個有效的影像分析方法
變得日益重要。而現階段,由於大部分的影像資料都
以MPEG 的方式壓縮儲存,所以一個直接在壓縮資料
做的影像分析也引起廣泛的研究興趣。本文提供一個
新的快速影像分析方法,以直接萃取影像資料中的
Macroblock 資料加以簡單分析,可以快速找到換景、
閃光燈及標題等較關鍵的影像片段,以便利將來使用
者的瀏覽與搜尋。 | zh_TW |
dc.description.abstract | Efficient indexing methods are required to handle the
rapidly increasing amount of visual information within
video databases. Video analysis that partitions the video
into clips or extracts interesting frames is an important
preprocessing step for video indexing. In this paper, we
develop a novel method for video analysis using the
macroblock (MB) type information of MPEG compressed
video bitstreams. This method exploits the comparison
operations performed in the motion estimation procedure,
which results in specific characteristics of the MB type
information when scene changes occur or some special
effects are applied. Only a simple analysis on MB types of
frames is needed to achieve very fast scene change,
gradual transition, flashlight, and caption detection. The
advantages of this novel approach are its direct extraction
from the MPEG bitstreams after VLC decoding, very low
complexity analysis, frame-based detection accuracy and
high sensitivity. | en |
dc.format | application/pdf | zh_TW |
dc.format.extent | 165134 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language | zh-TW | zh_TW |
dc.language.iso | zh_TW | - |
dc.publisher | 臺北市:國立臺灣大學電機工程學系暨研究所 | zh_TW |
dc.rights | 國立臺灣大學電機工程學系暨研究所 | zh_TW |
dc.subject | MPEG | zh_TW |
dc.subject | 影像分析 | zh_TW |
dc.subject | 換景 | zh_TW |
dc.subject | Compressed Domain Video Analysis | en |
dc.subject | Video
Indexing | en |
dc.subject | Scene Change | en |
dc.subject | Flashlight and Caption Detection | en |
dc.title | 多媒體訊號處理(II) – 總計畫 | zh_TW |
dc.title | Multimedia Signal Processing (II) | en |
dc.type | report | en |
dc.identifier.uri.fulltext | http://ntur.lib.ntu.edu.tw/bitstream/246246/7770/1/892213E002159.pdf | - |
dc.coverage | 計畫年度:89
第二期;起迄日期:2000-08-01/2001-07-31 | zh_TW |
item.fulltext | with fulltext | - |
item.languageiso639-1 | zh_TW | - |
item.openairecristype | http://purl.org/coar/resource_type/c_93fc | - |
item.cerifentitytype | Publications | - |
item.openairetype | report | - |
item.grantfulltext | open | - |
crisitem.author.dept | Photonics and Optoelectronics | - |
crisitem.author.dept | Networking and Multimedia | - |
crisitem.author.parentorg | College of Electrical Engineering and Computer Science | - |
crisitem.author.parentorg | College of Electrical Engineering and Computer Science | - |
顯示於: | 電機工程學系
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