• Journal of KIISE:Software and Applications
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• v.27 no.1
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• pp.74-83
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• 2000

There is a rapid increase in the use of digital video information in recent years. Especially, user requires the environment which retrieves video from passive access to active access, to be more efficiently. we need to implement video retrieval system including video parsing, clustering, and browsing to satisfy user's requirement. In this paper, we first divide video sequence to shots which are primary unit for automatic indexing, using a hybrid method with mixing histogram method and pixel-based method. After the shot boundaries are detected, corresponding key frames can be extracted. Key frames are very important portion because they help to understand overall contents of video. In this paper, we first analyze camera operation in video and then select different number of key frames depend on shot complexity. At last, we compose panorama images from shots which are containing panning or tilting in order to provide more useful and understandable browsing environment to users.

• KIPS Transactions on Software and Data Engineering
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• v.5 no.6
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• pp.289-294
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• 2016

In recent times, as most people develop keen interest in health management, the importance of cultivating dietary habits to prevent various chronic diseases is emphasized. Subsequently, dietary management systems using a variety of mobile and web application interfaces have emerged. However, these systems are difficult to apply in real world and also do not provide personalized information reflective of the user's situation. Hence it is necessary to develop a personalized dietary management and recommendation method that considers user's body state information, food analysis and other essential statistics. In this paper, we analyze nutrition using self-organizing map (SOM) and prepare data about nutrition using clustering. We provide a substitute food recommendation method and also give feedback about the food that user wants to eat based on personalized criteria. The experiment results show that the distance between input food and recommended food of the proposed method is short compared to the recommended food results using general methods and proved that nutritional similar food is recommended.

• The KIPS Transactions:PartD
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• v.16D no.5
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• pp.817-824
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• 2009

In recent years, Weblog has become the most typical social media for citizens to share their opinions. And, many Weblogs reflect several social issues. There are many internet users who actively express their opinions for internet news or Weblog articles through the replying comments on online community. Hence, we can easily find internet blogs including more than 10 thousand replying comments. It is hard to search and explore useful messages on weblogs since most of weblog systems show articles and their comments to the form of sequential list. In this paper, we propose a visualizing and clustering system called TRIB (Telescope for Responding comments for Internet Blog) for a large set of responding comments for a Weblog article. TRIB clusters and visualizes the replying comments considering their contents using pre-defined user dictionary. Also, TRIB provides various personalized views considering the interests of users. To show the usefulness of TRIB, we conducted some experiments, concerning the clustering and visualizing capabilities of TRIB, with articles that have more than 1,000 comments.

• KIPS Transactions on Computer and Communication Systems
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• v.3 no.2
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• pp.57-62
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• 2014

In order to provide real-time multimedia streaming service, a lot of system resources and network bandwidth required. Thus each computer is any computer other equivalent has the ability to act as a client and a server Peer-to-Peer(P2P) architecture with much interest. In this paper, techniques of P2P content that requires a user to efficiently retrieve the desired time in the streaming service have placed the focus of the research techniques. In a number present in the P2P contents, the user requests to find out the desired amount of time the content streaming services in order to provide seamless lookup latency contents search algorithm to minimize the study. P2P based smart network system and the structure of the super-node and the peer node is composed of super-gateway. Smart network system architecture proposed by performing a content search algorithm. The user requests a desired content, the service can be retrieved within the provided the flexibility.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.23 no.6
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• pp.697-703
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• 2019

This study looked at what the perceived recognition and user characteristics of 3D printers have to do with perceived value and intention of continuing use. The data collection was conducted by 300 people, including employees who lived in Korea and used 3D printers. Research has shown that firstly, perceptual perception affects perceived values and intended use. Second, user characteristics have been shown to affect perceived value and intended use. Third, it appears to have a positive effect on perceived values and the intention of continuous use. Therefore, by fully recognizing the usefulness and ease of 3D printers to consumers, and by making them aware of the convenience and reliability of consumers, it will be effective if a strategy is established that has put a lot of interest and effort into making 3D printers more popular and active by enhancing consumers' intention to continuously use 3D printers.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.05a
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• pp.413-416
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• 2014

Recently, demand for various leisure sports gradually increases, as people's sense of values changes into leisure-centered one according to the change of given social circumstance and the change of customer needs all over the world. The actual condition is that an interest and participation rate especially in water leports during the summer increases. And needs for various hull design of standardized boat for water leisure increase. Therefore, this paper is intended to develop a recommendation system to design a boat for water leisure by using the collaborative filtering technique in order to make it possible to actively cope with the change of various customer needs for hull design. To this end, emotion relating to kayak design was selected through consumer survey, and emotion was derived by factor analysis and assessment, and then a kayak design layout in the aspect of customer's emotional preference was presented. Besides, an analysis was made according to the elements such as hull, body, and propulsion system of kayak in order to select emotional words according to the kayak design reflecting user's preference, and then a boat model for water leisure in conformance with user's preference was presented.

• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.631-631
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• 2015

최근 데이터가 전략적 의사결정의 핵심요소로 대두됨에 따라 데이터 통합 및 데이터 품질에 대한 관심이 증대되고 있다. 특히, 데이터 품질을 확보하기 위해 데이터 표준화가 필수적으로 수반되어야 한다. 그러나 데이터 활용에 있어 (1)데이터의 중복 및 불일치 발생, (2)데이터에 대한 의미 파악 지연으로 정보 제공의 적시성 결여, (3)데이터 통합의 어려움, (4)정보시스템 변경 및 유지 보수 곤란 등과 같은 현실적인 문제점들이 정확한 정보를 적시에 사용자에게 전달하는데 장애 요인으로 발생하고 있는 실정이다. 따라서 본 연구에서는 '국토관측센서 기반 수문 및 수재해 정보포털시스템 개발'에 앞서 보다 정확한 데이터 통합관리 및 제공서비스가 가능하도록 국내외 사례연구를 통한 기반을 마련하고자 한다. 데이터 표준화는 시스템별로 산재해 있는 데이터 정보요소에 대한 명칭, 정의, 형식, 규칙에 대한 원칙을 수립하여 이를 전사적으로 적용하는 것을 의미하며, 이러한 데이터 표준화 작업은 데이터의 정확한 의미 파악뿐만 아니라 데이터에 대한 상반된 시각을 조정하는 역할을 수행한다. 기본적으로 데이터 모델 및 데이터베이스에서 정의할 수 있는 모든 오브젝트를 대상으로 하는 것이 이상적이나, 주로 관리해야 될 필요성이 있는 오브젝트만을 대상으로 데이터 표준화를 하는 것이 더욱 효율적으로 작용한다. 본 연구는 국내외 데이터 통합관리 표준화 동향을 제시하였으며, 현업 사용자로부터 데이터 표준과 관련된 요구사항을 수요조사를 통하여 조사함으로써 데이터 표준 대상 후보를 식별하고 개선점을 도출하는데 사용할 기반을 마련하였다. 데이터 표준화가 수행되면 현업 사용자는 정확한 데이터를 사용할 수 있고, 올바른 의사결정을 내릴 수 있을 것으로 판단된다. 앞으로 데이터 표준, 데이터 표준 준수 체크, 데이터 표준 조회 및 활용 등 데이터 표준 관리에서 수작업으로 인해 발생하는 애로사항을 배제하기 위해 자동화에 관한 연구가 지속적으로 추진되어야 할 것으로 사료된다.

• Journal of Korea Society of Industrial Information Systems
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• v.26 no.3
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• pp.59-69
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• 2021

t Global logistics companies are developing and introducing logistics systems to provide competitive logistics services. Especially as IT develops and mobile functions become more convenient, the Mobile TMS(Transportation Management System) is being introduced as a more convenient system for delivery workers and office managers. However, the success of such a system depends on the system developer who understand the site accurately and office managers and couriers who are using it in the field. The purpose of this paper is to understand which characteristics influence in exploiting new systems focusing on the attitudes of users who use the system daily, and we analyze it through the TAM(Technology Acceptance Model). According to the analysis result, when smart phone has become popular, users have concluded that usefulness is more significant than ease in acceptance of the systems. As a result, we draw suggestions that the focus should be on usefulness rather than ease of system at the stage of system developed.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.9
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• pp.1224-1230
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• 2020

Since the spread of smart phones, interest in wearable devices has increased and diversified, and is closely related to the lives of users, and has been used as a method for providing personalized services. In this paper, we propose a method to detect the user's behavior by applying information from a 3-axis acceleration sensor and a 3-axis gyro sensor embedded in a smartphone to a convolutional neural network. Human behavior differs according to the size and range of motion, starting and ending time, including the duration of the signal data constituting the motion. Therefore, there is a performance problem for accuracy when applied to a convolutional neural network as it is. Therefore, we proposed a Time-Division Feature Fusion Convolutional Neural Network (TDFFCNN) that learns the characteristics of the sensor data segmented over time. The proposed method outperformed other classifiers such as SVM, IBk, convolutional neural network, and long-term memory circulatory neural network.

• The Journal of the Korea Contents Association
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• v.21 no.2
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• pp.100-112
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• 2021

With the recent growth of the big data technology market, interest in visualization technology has steadily increased over the past few years. Data visualization is currently used in a wide range of disciplines such as information science, computer science, human-computer interaction, statistics, data mining, cartography, and journalism, each with a slightly different meaning. Big data visualization in smart cities that require multidisciplinary research enables an objective and scientific approach to developing user-centered smart city services and related policies. In particular, spatial-based data visualization enables efficient collaboration of various stakeholders through visualization data in the process of establishing city policy. In this paper, a user-centered spatial big data visualization expression request method was derived by examining the spatial-based big data visualization expression process and principle from the viewpoint of effective information delivery, not just a visualization tool.