• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2011.11a
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• pp.36-37
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• 2011

깊이 영상은 가상 시점 영상을 합성할 때 사용되는 3차원 거리 정보로 깊이 영상 기반 렌더링에서 가상 시점을 합성할 때 사용한다. 따라서, 깊이 영상 부호화에서는 부호화 효율 못지않게 합성 영상의 화질이 중요하다. 깊이 영상의 화질은 합성된 가상 시점 영상의 화질에 큰 영향을 미친다. 따라서 고화질 깊이 영상이 필요한 경우, 부호화 손실이 적은 무손실 부호화를 사용한다. 하지만, 이와 같은 무손실 부호화 방법은 복호를 통해 원래의 깊이 영상을 그대로 복원할 수 있지만, 압축률이 낮다는 단점이 있다. 본 논문에서는 복호된 영상의 화질과 부호화 비트의 균형을 모두 고려하기 위해 근접 무손실 HEVC(high efficiency video coding)와 향상된 CABAC(context-based adaptive bnary arithmetic coding)을 이용한 새로운 깊이 영상 부호화 방법을 제안한다. 실험을 통해 제안한 방법이 합성된 가상 시점 영상의 화질 손실 없이, 기존의 무손실 및 근접 무손실 방법보다 더 나은 부호화 성능을 제공함을 알 수 있었다.

• Proceedings of the Korea Database Society Conference
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• 2008.05a
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• pp.211-224
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• 2008

As a lot of information and media are given to users in Internet space nowadays, users feel disoriented or "lost in space" intensively. So it is suggested that we have the system to reduce information overload and to propose effective and efficient information. In this study we present a visualizing technique which uses fisheye views on data adjacency to combine global context and local details for presentation of many results in limited space. Data Adjacency on graph theory is applied to set up degree of interest which is main focus in fisheye views. Graph theory is useful to solve the problem resulted from various combinational optimization, especially it has advantages to analyze issues in information space like Internet. To test the usability of the proposed visualization technique, we compared the effectiveness of different visualization techniques. Results show that our method is evaluated with respect to less time and high satisfaction for a task accomplishment.

• Journal of the Korean Society for information Management
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• v.1 no.1
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• pp.9-24
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• 1984

This paper reviews the applicabilities and the problems of copyright law and patent law to the computer-related intellectual properties such as data bases and computer softwares, with special reference to the practices in the advanced countries like U.S., U.K., and Japan. It also discusses Japanese proposals of-the new computer program right law which has been based on entirely different concepts of new media. The author concludes that the legal protection devices of any individual countries should be considered in the context of the eventual international agreements.

• International Journal of Advanced Culture Technology
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• v.3 no.2
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• pp.50-57
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• 2015

An online survey was conducted to assess motivations for using, reliance on, and perceived credibility of political blogs and microblogs during both the Taiwanese general election of 2009 (the blog epoch) and the presidential elections of 2012 (the microblog epoch). Results indicated higher reliance on and motivation for using political blogs than microblogs. Blogs were also perceived to be more credible than microblogs. Respondents who primarily engaged in blogging for information purposes were more likely to judge candidate blogs as highly credible, whereas interest in entertainment emerged as the strongest predictor of the perceived credibility of microblogs. This research also provided quantitative evidence showing how users viewed blogs and microblogs differently in the context of political campaigns. The aim is to explore the pros and cons of blogging and microblogging as a tool for political communication.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2004.11a
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• pp.189-192
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• 2004

The present much information of internet has to exist for innumerable user so that couldn't satisfy there's a variety of demand. so they have a demerit that search unnecessary information. However Web service is different with other mass media because It is possible that enable Mass Customization for Personalization strategy. In The paper suggest reasoning system that detect user connection location by using indirect abstraction techniques a kind of Case-based reasoning techniques.

• International Commerce and Information Review
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• v.8 no.1
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• pp.143-163
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• 2006

The terms electronic trade, electronic trading and electronic commerce are often used interchangeably, and refer to trading transactions conducted using electronic media. Electronic trade is business-to-business transactions in an industrial context, while electronic commerce refers to retailing and the consumer sector as well as mass marketing. The Electronic trade process is defined as a flow of information (documents) exchanged between enterprises and trade-related firms (shipping companies, foreign exchange banks, forwarders, etc.) in the course of implementing a series of export and import procedures. Electronic trading systems exploit information technology to improve the efficiency of communications and/or to alter the nature of inter-organizational transactions. Many studies exist about the adoption of inter-organizational systems (IOS) and electronic data interchange (EDI), but few focus on electronic trade. The literature on exporting companies's electronic trade adoption and implementation, although extensive, consists mainly of exploratory studies focusing on technological characteristics such as barriers, benefits and usage. The purpose of this study is to broaden this perspective by investigating the environmental, organizational and technological drivers of business-to-business e-commerce adoption.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2014.11a
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• pp.167-170
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• 2014

이동 방송 환경에서 사용자가 특정 프로그램 또는 특정 서비스를 편리하게 수신할 수 있도록 하기 위해서는 고정 환경과 달리 적합한 사용자 상호작용이 고려되어야 한다. 본 논문에서는 디지털 라디오 환경에서 청취자에게 서비스를 편리하고 효과적으로 접근하고 수신할 수 있도록 하는 멀티모달 기반의 사용자 상호작용 기술에 대해서 소개하고자 한다. 이를 위해 디지털 라디오 환경 및 서비스 구조를 분석하고 이를 기반으로 사용자 상호작용이 필요한 사항을 도출하였다. 사용자 상호작용 엔진은 XML 마크업 언어를 기반으로 서비스, 프로그램 및 콘텐츠 수준의 상호작용이 가능하도록 구성하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.10a
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• pp.1016-1017
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• 2018

사물인터넷 환경에서 획득되는 상황 인지 데이터들 중에 특히 이동 객체에 대한 정보를 담은 데이터는 상황 인지의 여러 응용 분야에 매우 유용하다. 하지만, 실시간으로 보행자를 검출하게 되면 인원이 중첩되거나 보행자가 아닌 사물이 검출 되는 현상이 발생한다. 정확한 보행자 검출을 위해 사물인터넷 환경에서 얻을 수 있는 영상에서 다양한 크기와 위치의 수많은 블록들로부터 HOG를 계산하고 유의미한 블록들을 선별해서 보행자 수를 검출한다. 검출된 보행자 수는 서버에 저장되어 특정 공간의 이용자 수를 알아내는데 사용된다.

• Journal of Information Processing Systems
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• v.15 no.5
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• pp.1119-1130
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• 2019

With the wide spread of Social Network Services (SNS), fake news-which is a way of disguising false information as legitimate media-has become a big social issue. This paper proposes a deep learning architecture for detecting fake news that is written in Korean. Previous works proposed appropriate fake news detection models for English, but Korean has two issues that cannot apply existing models: Korean can be expressed in shorter sentences than English even with the same meaning; therefore, it is difficult to operate a deep neural network because of the feature scarcity for deep learning. Difficulty in semantic analysis due to morpheme ambiguity. We worked to resolve these issues by implementing a system using various convolutional neural network-based deep learning architectures and "Fasttext" which is a word-embedding model learned by syllable unit. After training and testing its implementation, we could achieve meaningful accuracy for classification of the body and context discrepancies, but the accuracy was low for classification of the headline and body discrepancies.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2018.06a
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• pp.175-177
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• 2018

This paper proposes an algorithm to speed up block structure partition of quad tree plus binary tree (QTBT) in Joint Exploration Test Model (JEM) encoder. The proposed fast encoding of QTBT block partition employs three spatially neighbor coded blocks, such as left, top-left, and top of current block, to early terminate QTBT block structure pruning. The propose algorithm is organized based on statistical similarity of those spatially neighboring blocks, such as block depths and coded block types, which are coded with overlapped block motion compensation (OBMC) and adaptive multi transform (AMT). The experimental results demonstrate about 30% encoding time reduction with 1.3% BD-rate loss on average compared to the anchor JEM-7.1 software under random access configuration.