Presentation	1999/11/18 Hierarchical Searching Technique for MPEG Streams based on Motion Information Toshiyuki YOSHIDA,
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Abstract(in English)	In order to develop a video retrieval technique, this paper discusses a searching algorithm based on motion vectors (MV) in MPEG bitstreams. We first give an MV estimation technique for MPEG which estimates precise and coherent MV fields while keeping the coding efficiency as high as possible. We then propose a retrieval algorithm based on motion histgrams. By varying block sizes from which the motion histgrams are extracted, a hierarchical retrieval scheme can be realized. Finally, we show a GUI system which converts users' aiming into retrieval keys, and some simple experimental results using the GUI will be given.
Keyword(in Japanese)	(See Japanese page)
Keyword(in English)	Video retrieval / MPEG / Motion vecotr / Man-machine interface
Paper #	IE99-79
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Conference Information
Committee	IE
Conference Date	1999/11/18(1days)
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Paper Information
Registration To	Image Engineering (IE)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Hierarchical Searching Technique for MPEG Streams based on Motion Information
Sub Title (in English)
Keyword(1)	Video retrieval
Keyword(2)	MPEG
Keyword(3)	Motion vecotr
Keyword(4)	Man-machine interface
1st Author's Name	Toshiyuki YOSHIDA
1st Author's Affiliation	Department of Physical Electronics, Faculty of Engineering, Tokyo Institute of Technology()
Date	1999/11/18
Paper #	IE99-79
Volume (vol)	vol.99
Number (no)	444
Page	pp.pp.-
#Pages	8
Date of Issue