Ontology-based Multimedia Contents Retrieval
Framework in Smart TV Environment
Moohun Lee*, Joonmyun Cho*, Jeongju Yoo*, Jinwoo Hong**Next Generation SmartTV Research Department,
ETRI(Electronics and Telecommunications Research Institute), Korea
leemh@etri.re.kr, jmcho@etri.re.kr, jjyoo@etri.re.kr, jwhong@etri.re.kr

Abstract—Semantic search promises to provide more accurate result than present-day keyword matching-based search by using theknowledge represented logically (i.e., knowledge base). But, the ordinary users don’t know well the complex formal query language andschema of the knowledge base. So, the system should interpret the meaning of user’s keywords. Such requirements are conspicuous
especially in smart media such as smart phone, IPTV and smart TV. In this paper, we describe a framework for the semantic retrieval ofmultimedia contents. Our framework is ontological knowledge base-driven in the sense that the interpretation process is integrated into a
unified structure around a knowledge base, which is built on domain ontologies. Our framework also integrates such components as forknowledge base augmentation by user preference and context. We also present our prototype system we have been developing to test ourframework ideas.
Keyword—Knowledge Base, Ontology, Semantic Search, Smart TV
Moohun Lee received his BS and MS degree in computer engineering from Hannam University, Daejeon, Korea, in 2002 and 2004,respectively. He joined ETRI, Daejeon, Rep. of Korea in 2008 and was involved with the OPRoS (Open Platform for Robot Service) project
until 2010. He is currently working as a senior researcher in smart search and recommendation system development for smart TV project. Hisresearch interests include ontology-based knowledge base system, semantic search, and information retrieval.

Joonmyun Cho received his BS, MS and PhD in mechanical Engineering from Korea Advanced Institute of Science and Technology(KAIST) in 1993, 1995 and 2006, respectively. He joined ETRI, Daejeon, Rep. of Korea in 2007 and was involved with the URC (UbiquitousRobotic Companion) project until 2011. He is currently working as a project leader in smart search and recommendation systemdevelopment for smart TV project. His research interests include ontology-based knowledge base system and intelligent agent system.

Jeongju Yoo received the BS and MS degree in Telecommunications in 1982 and 1984, respectively, from Kwangwoon University, Seoul,Korea. He received the Ph.D degree in Computing Science from Lancaster University, United Kingdom in 2001. Since 1984, he has been aPrincipal Member of Technical Staff in the Next Generation Smart TV Research Department of Electronics and Telecommunications
Research Institute (ETRI), Korea. He was a Head of MPEG Korea delgates from 2007 to 2009 and he is a Director of Smart TV Media
Research Team at ETRI. His research interests are in the area of QoS, video coding, media streaming, and multiscreen service technology ofSmart TV.

Jinwoo Hong received the BS and MS degrees in electronic engineering from Kwangwoon University, Seoul, Korea, in 1982 and 1984,respectively. He also received the PhD in computer engineering from the same university in 1993. Since 1984, he has been with ETRI,Daejeon, Korea, as a principal member of engineering staff, where he is currently a director of the Next Generation SmartTV Research
Department. From 1998 to 1999, he conducted research at Fraunhofer Institute in Erlangen, Germany, as a visiting researcher. His researchinterests include multimedia framework technology, broadcasting media and service, personal broadcasting, and realistic media.