• Science of Emotion and Sensibility
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• v.19 no.4
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• pp.13-20
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• 2016

Recently, life-logging service which has expanded to measure and record the daily life of the users and to share with others are increasing. In particular, as life-logging services based on the application has become popular with the development of wearable-devices and smart-phones, the contents of this service are produced by user behavior and are provided in infographic menu form. The purpose of this paper is to extract user behavior and classify for making contents items of life-logging service. For this paper, the first of all, we discuss the definition and characteristics of life-logging and research the contents based on user behavior related to life-logging by the publications including thesis, articles, and books. Secondly, we extract and classify the user behavior to build the contents for life-logging service. We gather users' action words from publication materials, researches, and contents of existing life-logging service. And then collected words are analyzed by FGI (Focus Group Interview) and survey. As the result, 39 words which suit for contents of life-logging service are extracted by verify suitability. Finally, the extracted 39 words are classified for 19 categories -'Eat', 'Keep house', 'Diet', 'Travel', 'Work out', 'Transit', 'Shoot', 'Meet', 'Feel', 'Talk', 'Care for', 'Drive', 'Listen', 'Go online', 'Sleep', 'Go', 'Work', 'Learn', 'Watch' - which are suggested by the surveys, statistical analysis, and FGI. We will discuss the role and limitations of this results to build contents configuration based on life-logging application in this study.

• The Journal of the Korea Contents Association
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• v.16 no.12
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• pp.43-49
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• 2016

As user-centered design and content development emerge, the research and the establishment of items on usability evaluation are becoming more important. However, research on usability evaluation for digital systems in specific areas of mobile applications is still incomplete. Due to the recent development of wearable devices and smartphones, development and usage of quantified-self and life-logging applications has been rapidly increasing. This study aims to establish evaluation items and the main factors for the usability assessment of the applications that support life-logging services. In order to establish evaluation factors for life-logging application usability, we first gathered existing usability assessment items and selected the initial items through the Focus Group Interview(FGI). Second, we conducted user assessment surveys on the selected initial questionnaires and performed reliability and exploratory factor analyses based on the survey results. Third, through the statistical analyses results, we established 28 usability assessment items and four factors: recognition; functionality; aesthetics; and satisfaction. Finally, we discussed the expectations and limitations of the established usability assessment. The results from this paper could be used as a guideline for the usability assessment of life-logging applications and thus will contribute to effective content development.

• Journal of the HCI Society of Korea
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• v.12 no.2
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• pp.13-19
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• 2017

Various life-logging based on cloud service have developed social network according to the advanced technology of smartphone and wearable device. Daily digital life on social networks has been shared information and emotion and developed new social relationships. Recent life-logging has required social relationships beyond extension of personal memory and anonymity for privacy protection. This study is to determine social network group by using life-logging data obtained in daily lives and to categorize emotion behavior with anonymity guarantee. Social network group was defined by grouping similar representative emotional behavior. The public's patterns and trends was able to be inferred by analyzing representative emotion and behavior of the social groups network.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2019.06a
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• pp.25-28
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• 2019

본 논문은 시니어 라이프 로깅을 위한 데이터베이스를 효과적으로 구축하기 위해 영상의 심미적 특징을 통한 행동 별 영상 요약을 소개한다. 실내의 TV 앞에서 오랜 시간을 보내는 시니어의 상태를 체크하기 위해 일반 카메라 또는 360 카메라를 통해 HD 급 화질 이상의 영상을 주기적으로 수집하고, 이를 머신러닝 또는 딥러닝 기반의 행동인식 시스템에 이용하기 위한 전처리 단계에 응용할 수 있는 방법을 서술한다. 이 연구에서는 영상 데이터에서 얻을 수 있는 색상을 이용한 HSV 히스토그램, 영상신호의 Jitter 를 줄이는 고정도, 움직임 에너지 등을 이용하여 짧은 시간 내에 행동별로 구분된 영상(샷, shot)을 자르고 요약하는 방법을 서술한다.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.600-607
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• 2008

메타버스 개발을 위한 세계 각국의 행보가 빨라지고 있다. 미국의 <세컨드라이프>를 시작으로 MS와 구글이 차세대 메타버스 개발을 서두르고 있고, 일본에서도 , , 등이 이미 출시되었거나 출시를 앞두고 있다. 이에 발맞춰 메타버스에 관한 연구도 한창인데, 2006년 5월 미국 캘리포니아에서 열린 제1회 메타버스 로드맵 서alt(Metaverse Roadmap Summit)이 대표적이다. 미국미래학협회(ASF)주최로 열린 이 행사에는 미국의 저명한 IT전문가, 게임제작자들이 대거 참가했고, 조직위측은 이날 햇사에서 진행된 수십 시간 분량의 토론을 인터넷에 고시해서 1년동안 각계각층의 의견을 수렴했다. 그리고 1년 후인 2007년 6월 <메타버스 로드맵 3D웹으로 가는길>을 발표됐다. 뿐만 아니라 비슷한 시기에 일본의 <노무라연구소>에서도 IT로드맵을 발표하고 메타버스의 발전전망을 제시했다. 이에 반해 세계최고의 IT기술력을 자랑하는 국내에서는 메타버스에 관한 개발과 연구가 매우 미흡한 실정이다. 이에 본 고에서는 미국의 <메타버스 로드맵>과 일본의 을 중심으로 메타버스의 개념과 발전전망을 살펴보고, 현존하는 가상세계 중 메타버스 개념에 가장 근접했다고 평가받는 린든랩의 <세컨드라이프>의 의의와 한계를 짚어보았다. 또한 제2, 제3의 <세컨드라이프>를 노리고 있는 세계 각 국의 메타버스 개발동향을 분석하고 이를 통해서 차세대 메타버스 개발의 성공조건으로서 풍부한 콘텐츠 제공과 SNS기능의 강화, 미러월드의 발전가능성등에 주목해야 함을 알 수 있었다. 이러한 연구결과는 90년대 온라인게임의 성공 이후 장기간 침체 현상을 보이고 있는 우리의 가상세계 개발연구에 유의미한 시사점을 지닌다고 하겠다.

• Journal of Digital Convergence
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• v.18 no.11
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• pp.233-239
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• 2020

Due to the development of digital technology, users can record their daily lives without being restricted by time and space. The trend is growing rapidly, but lifelogging cases are still insufficient. Google's Timeline and domestic application 'Daily' were analyzed through in-depth interviews. Based on the Creating Pleasurable Interface Model, the factors influencing user satisfaction were identified by the Reckard 7-point scale based on the Honeycomb model. The results of the in-depth interviews and the 7-point scale were similar, and we could see what and why users preferred the recording application. This study is meaningful to evaluate the user experience for recording application and analyzing the needs of users obtained through in-depth interviews to assess the usability that provide a service record and recall.

• Knowledge Management Research
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• v.23 no.2
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• pp.61-82
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• 2022

Metaverse is a combination of Meta and Universe, which refers to a world in which users or avatars engage in social, economic, and cultural activities. This study attempted to compare the four worldviews proposed by the Acceleration Studies Foundation (ASF) based on the five evaluation factors of SPICE, which are factors for promoting customer experience. 227 samples were used in the analysis, and as a result, seamlessness was the highest in augmented reality, interoperability in lifelogging, presence in the mirror world, and concurrence in virtual reality. This study is meaningful in that it presents a model design plan according to the classification of the metaverse platform and the worldview, and presents detailed strategic directions to existing metaverse platform operators or new entrants.

• Proceedings of the Korea Contents Association Conference
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• 2016.05a
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• pp.161-162
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• 2016

최근 가상현실을 활용한 문화유산 콘텐츠들이 활성화되고 있다. 그러나 그 대부분은 증강현실이나 가상현실을 통해 단순 복원정보나 고증정보를 제공하는 데 그치고 있다. 이글에서는 메타버스의 4가지 유형을 통해 역사교육콘텐츠 개발방안을 살펴보았다. 첫째, 가상세계의 구현을 통해 학생들이 과거 신분별 아바타를 운영해 봄으로써 당시 생활을 체험해 볼 수 있다. 둘째, 증강현실을 통해 현재 체험해 볼 수 없는 사건이나 문화유산의 현장을 경험할 수 있다. 셋째, 시간의 흐름에 따른 사회의 변화를 거울세계를 통해 확인할 수 있다. 넷째, 라이프로깅을 통해 사물의 용도와 주사용자 등 다양한 삶의 방식들을 이해할 수 있다. 이러한 4가지 유형은 사례에 따라서 상호 결합해서 적용할 수 있다. 디지털 시대 역사교육은 단순 정보 전달에 그쳐서는 안된다. 다양한 경험의 확장을 통해 역사상을 제대로 이해할 수 있도록 해야 한다.

• KIISE Transactions on Computing Practices
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• v.21 no.2
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• pp.154-159
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• 2015

Over the past few years, user needs in the smartphone application market have been shifted from diversity toward intelligence. Here, we propose a novel cognitive agent that plans the daily routines of users using the lifelog data collected by the smart phones of individuals. The proposed method first employs DPGMM (Dirichlet Process Gaussian Mixture Model) to automatically extract the users' POI (Point of Interest) from the lifelog data. After extraction, the POI and other meaningful features such as GPS, the user's activity label extracted from the log data is then used to learn the patterns of the user's daily routine by POMDP (Partially Observable Markov Decision Process). To determine the significant patterns within the user's time dependent patterns, collaboration was made with the SNS application Foursquare to record the locations visited by the user and the activities that the user had performed. The method was evaluated by predicting the daily routine of seven users with 3300 feedback data. Experimental results showed that daily routine scheduling can be established after seven days of lifelogged data and feedback data have been collected, demonstrating the potential of the new method of place-time-activity coupled daily routine planning systems in the intelligence application market.

• Smart Media Journal
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• v.10 no.4
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• pp.111-120
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• 2021

This study looked at how the digital cultural heritage, which is being actively built by the government and public institutions, can be utilized in the metaverse service. Through an expert interview, we investigated how the digital cultural heritage of Bulguksa can be serviced with the four elements of the metaverse: augmented reality, mirror world, lifelogging, and virtual world. As a result of the study, it was confirmed that when digital cultural heritage is used in a virtual space called metaverse, interactive and realistic services can be provided to users. In addition, it was found that users can exhibit, experience, and educate online parts that are not available in real life in the same situation as if they were in the field. Through this, it was confirmed that if digital cultural heritage is designed as a metaverse service, it can provide functions and services of a different level than before. In particular, the result was obtained that it is possible to provide services considering the characteristics of each of the four elements of the metaverse. First, it is possible to obtain the convenience of augmenting the senses by using augmented reality, and secondly, it is possible to obtain the scalability and efficiency of reproducing the real space by using it as a mirror world element. Third, by using the lifelogging element, communication can be strengthened through the user's record and connection, and fourthly, through the virtual world element, roles and activities in the virtual world can be given to the user. Therefore, if digital cultural heritage is developed as a metaverse service in consideration of these factors, a more active and open experience environment can be provided to users.