• Journal of Korea Multimedia Society
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• v.7 no.10
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• pp.1452-1463
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• 2004

The requirement of automatic video summary is increasing as bi-directional broadcasting contents and various user requests and preferences for the bi -directional broadcast environment are increasing. Automatic video summary is needed for an efficient management and usage of many contents in service provider as well. In this paper, we propose a method to generate a content-based summary of linguistic educational videos automatically. First, shot-boundaries and keyframes are generated from linguistic educational video and then multiple(low-level) visual features are extracted. Next, the semantic parts (Explanation part, Dialog part, Text-based part) of the linguistic educational video are generated using extracted visual features. Lastly the XMI- document describing summary information is made based on HieraTchical Summary architecture oi MPEG-7 MDS (Multimedia I)escription Scheme). Experimental results show that our proposed algorithm provides reasonable performance for automatic summary of linguistic educational videos. We verified that the proposed method is useful ior video summary system to provide various services as well as management of educational contents.

• Journal of KIISE
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• v.42 no.3
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• pp.413-418
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• 2015

In this paper, we design new video metadata schema for searching video segments to create UEC (User Edited Contents). The proposed video metadata schema employs hierarchically structured units of 'Title-Event-Place(Scene)-Shot', and defines the fields of the semantic information as structured form in each segment unit. Since this video metadata schema is defined by analyzing the structure of existing UECs and by experimenting the tagging and searching the video segment units for creating the UECs, it helps the users to search useful video segments for UEC easily than MPEG-7 MDS (Multimedia Description Scheme) which is a general purpose international standard for video metadata schema.

• Journal of Broadcast Engineering
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• v.8 no.1
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• pp.80-90
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• 2003

Today, thanks to the spread of Internet and the development of various multimedia technologies, broadcasting environment is changing in a way to merging broadcasting and communication environment. In such a new environment, transparent delivery and interoperability between different technologies become an important issue. In ISO/IEC MPEG meeting, MPEG-21 has been established. In MPEG-21, it is discussed actively about big picture to build an infrastructure for the delivery and consumption of multimedia contents. In this paper, we have applied Digital Item in MPEG-21 to broadcasting contents. Broadcasting Digital Item is generated using MPEG-7 MDS for the description of resources as well as Digital Item Declaration, and Digital Item Identification. Furthermore, we develop Digital Item generation system and parsing system. In experiment, we verify the usefulness of Broadcasting Digital Item by generating an education video contents and consuming it at different user environments.

• Journal of KIISE:Computer Systems and Theory
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• v.33 no.9
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• pp.574-584
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• 2006

Recently, ISO/IEC 23000 (also known as 'MPEG-A') has proposed a new file format called 'MAF(Multimedia Application File Format)[1]' which provides a capability of integrating/storing the widely-used compression standards for audio and video and the metadata in MPEG-7 form into a single file format. However, it is still very hard to verify the usefulness of MPEG-A in the real applications because there is still no real system that fully implements this standard. In this thesis, a design and implementation of a multimedia retrieval system based on MPEG-A standard on PC and mobile device is presented. Furthermore, an extension of MPEG-A for describing the metadata for video is also proposed. It is selected and defined as a subset of MPEG-7 MDS[4] and TV-anytime[5] for video that is useful and manageable in the mobile environments. In order to design the multimedia retrieval system based on MPEG-A, we define the system requirements in terms of portability, extensibility, compatibility, adaptability, efficiency. Based on these requirements, we design the system which composed of 3 layers: Application Layer, Middleware Layer, Platform Layer. The proposed system consists of two sub-parts, client-part and server-part. The client-part consists of MAF authoring tool, MAP player tool and MAF searching tool which allow users to create, play and search the MAF files, respectively. The server-part is composed of modules to store and manage the MAF files and metadata extracted from MAF files. We show the usefulness of the proposed system by implementing the client system both on MS-Windows platform on desk-top computer and WIPI platform on mobile phone, and validate whether it to satisfy all the system requirements. The proposed system can be used to verify the specification in the MPEG-A, and to proves the usefulness of MPEG-A in the real application.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2002.11a
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• pp.151-156
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• 2002

본 논문에서는 MPEG-21 프레임워크 기반 하에 방송용 멀티미디어 컨텐츠를 디지털아이템 선언에 의해 디지털 아이템을 생성하고 이를 소비하기 위한 시스템에 대해 제안하였다. 제안된 시스템은 디지털 아이템을 XML 문서로 생성하고, 이 생성된 디지털 아이템을 소비하기 위한 관련 Parser 모듈들, 브라우저 및 리소스와 관련 데이터 DB로 구성되어 있다. 제안된 시스템을 방송용 컨텐츠에 대해 적용하였으며, 디지털 아이템의 기술을 위해 국제 표준 규격인 PEG-7 MDS 기술자를 이용 적용하였다. 예상 가능한 사용자의 여러 환경 조건을 가상하여 다양한 미디어 리소스를 적용하였다.

• Journal of Broadcast Engineering
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• v.9 no.4 s.25
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• pp.305-321
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• 2004

With the advent of the digital broadcasting, the audiences can access a large number of TV programs and their information through the multiple channels on various media devices. The access to a large number of TV programs can support a user for many chances with which he/she can sort and select the best one of them. However, the information overload on the user inevitably requires much effort with a lot of patience for finding his/her favorite programs. Therefore, it is useful to provide the persona1ized broadcasting service which assists the user to automatically find his/her favorite programs. As the growing requirements of the TV personalization, we introduce our automatic user preference learning algorithm which 1) analyzes a user's usage history on TV program contents: 2) extracts the user's watching pattern depending on a specific time and day and shows our automatic TV program recommendation system using MPEG-7 MDS (Multimedia Description Scheme: ISO/IEC 15938-5) and 3) automatically calculates the user's preference. For our experimental results, we have used TV audiences' watching history with the ages, genders and viewing times obtained from AC Nielson Korea. From our experimental results, we observed that our proposed algorithm of the automatic user preference learning algorithm based on the Bayesian network can effectively learn the user's preferences accordingly during the course of TV watching periods.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10b
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• pp.175-177
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• 2004

이 논문에서는 상이한 형식의 멀티미디어 메타데이터를 통합하기 위해서 통합 메타데이터를 정의하기 위해서 기존의 표준 멀티미디어 정보에 대한 다루고 있는 MPEG-7 MDS(Multimedia Description Scheme)와 TV-Anytime을 비교 분석하였다. 이렇게 정의한 메타데이터는 분산된 이종의 멀티미디어 자원을 의미적으로 통합하는 데에 사용될 수 있다. 아울러 이 메타데이터를 기반으로 향후 온톨로지를 정의하고 이를 기반으로 한 추론을 가능하게 해 상황인지 기반 멀티미디어 서비스를 지원하는 데에도 활용될 수 있다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2001.11b
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• pp.189-192
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• 2001

In this paper, we propose a method of loaming user preference for set-top box scenario. Our proposed method analyzes user history data to learn user preference and then automatically suggest the list of TV programs to the user under the assumption that the TV programs are regularly repeated on time and daily basis. We used MPEG-7 MDS to describe user history data. The experiment results show the proposed method yielded a good performance.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.490-492
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• 2002

본 논문에서는 효과적인 멀티미디어 데이터 검색을 위하여 기존의 주석과 내용 기반 검색 기법을 보완한 새로운 멀티미디어 데이터 검색 기법과 멀티미디어 데이터 모델을 사용한 통합 멀티미디어 검색 및 주석 시스템을 제안한다. 데이터 모델로는 MPEG-7 표준에 정의 되어있는 멀티미디어 기술 구조(MDS)와 기술 정의 언어인 XML Schema를 사용하였다. 이러한 모델을 기반으로 멀티미디어 데이터를 XML의 계층구조를 이용하여 주석 처리하고 다양한 방법을 통하여 검색을 할 수 있는 멀티미디어 검색 시스템을 구현하여, 실제 실험을 통하여 성능을 평가하였다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.245-248
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• 2013

With the development of multimedia and network technology, the production of multimedia contents is rapidly increasing. Meanwhile, the technology to search and use the contents is still insufficient. There are standards for multimedia contents to address the problem, but they cannot fully support diverse multimedia data types or ensure their interoperability. In this paper, an ontology-based content search system is proposed to ensure the interoperability of multimedia contents. The ontology is configured by presenting the rules for it using the schema structure of the multimedia description scheme (MDS) of MPEG-7. Based on this ontology, the association of the multimedia data is expanded to design an access system that allows semantic search.