• Proceedings of the Korea Information Processing Society Conference
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• 2019.10a
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• pp.521-524
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• 2019

온라인상의 사진 저작물들은 쉬운 복제와 수정으로 인하여 지적재산권에 많은 침해를 입히고 있다. 본 논문에서는 사진가들의 저작권을 보호하고 사용자의 편리성을 제공하는 스톡사진 어플리케이션을 설계하고 구현하였다. 본 논문에서 설계하고 개발한 어플리케이션은 사진을 업로드/다운로드 할 수 있으며, 사진의 저작권을 인정할 수 있도록 사진의 정보를 담아 사용자의 거래 간에 사진의 정보도 같이 전송한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.10a
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• pp.509-512
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• 2019

최근 유용한 버스 어플리케이션이 많이 등장하였지만 사용자의 시각으로 보았을 때 버스를 이용하는 탑승객들은 아직까지도 많은 불편을 겪고 있다. 이에 본 논문에서는 버스기사가 승객을 보지 못하고 지나쳐 버리거나 승객들이 불필요한 대기시간을 낭비하지 않고, 탑승 후에도 번거롭게 하차 벨을 누르지 않게 되어 탑승객들로 하여금 보다 편리한 대중교통 이용을 할 수 있기를 기대한다.

• Journal of Advanced Information Technology and Convergence
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• v.10 no.1
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• pp.85-97
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• 2020

As a solution to the rapid urbanization problem, interest in and use of personal mobility devices such as bicycles and electric kickboards are increasing, and accidents are also rising every year. In this study, a smart vest to prevent traffic accidents and promote safe driving of personal mobility users was designed and implemented. Unlike the existing products on the market that indicate directions using buttons, the smart vest designed and implemented in this study indicates the moving direction by shaking a bracelet and displays the direction by LEDs on the vest. Therefore, this product was designed and implemented to be safer and differentiated from other existing products.

• Proceedings of the Korea Multimedia Society Conference
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• 2012.05a
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• pp.452-453
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• 2012

본 논문에서는 차량의 번호판 인식과 차량 수리 영상 키프레임 추출을 기반으로 u-차량 고객 관리 시스템을 제안한다. 또한 스마폰기반의 관리 시스템을 설계함으로써 사용자는 어느 장소에서나 차량의 수리 현장과 비용을 확인할 수 있는 장점을 가진다.

• International Journal of Contents
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• v.11 no.2
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• pp.31-36
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• 2015

Recent years have seen a significant increase in demand for multimedia data over wireless sensor networks for monitoring applications that utilize sensor nodes to collect multimedia data, including sound and video. However, the multimedia streams generate a very large amount of data. When data transmission schemes for traditional wireless sensor networks are applied in wireless multimedia sensor networks, the network lifetime significantly decreases due to the excessive energy consumption of specific nodes. In this paper, we propose a data compression scheme that implements the Chinese remainder theorem to a wireless multimedia sensor network. The proposed scheme uses the Chinese Remainder Theorem (CRT) to compress and split multimedia data, and it then transmits the bit-pattern packets of the remainder to the base station. As a result, the amount of multimedia data that is transmitted is reduced. The superiority of our proposed scheme is demonstrated by comparing its performance to that of an existing scheme. The results of our experiment indicate that our proposed scheme significantly increased the compression ratio and reduced the compression operation in comparison to those of existing compression schemes.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.653-656
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• 2009

Currently with development of development and the hardware of the superhigh speed network about increase is spreading out at the rapid pace the many multimedia contents quite from internet. The production environment is growing about the multimedia contents because of such as circumstance, as well as multimedia contents will increase. However, Numerous voice, the picture, with text etc. the time of the same multimedia contents and problem of spatial synchronization occur, started. W3C(World Wide Web Consortium) solves like this problem point presented the method for. Does so, SMIL(Synchronized Multimedia Integration Language) where puts a base in XML(Extensible Markup Language) will be able to compose the expression of the multimedia contents which is various standard was proposed. SMIL the individual multimedia object of chain with time will be able to integrate with the multimedia presentation which is synchronized spatial in order. In this paper a variety of multimedia content and synchronization of the time and space, to be represented by integrating the design and implementation of SMIL authoring system.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.13 no.10
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• pp.4886-4907
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• 2019

The use of mobile devices is increasing in multimedia applications. The multimedia contents are delivered to mobile users over heterogeneous networks. Due to fluctuation in bandwidth and user mobility, the service providers are facing difficulties in providing Quality of Service (QoS) guaranteed delivery for multimedia applications. Multimedia applications depend on QoS parameters such as delay, bandwidth, and jitter to offer better user experience. The existing schemes use the single source and multisource delivery but are unable to balance between stream quality and network congestion for mobile users. We proposed a Quality Oriented Multimedia Content Delivery Scheme (QOMCDS) for the mobile cloud to deliver better quality multimedia contents for the mobile user. The multimedia contents are delivered to the mobile device based on the device's parameters and network environment. The objective video quality assessment models like Peak Signal-to-Noise Ratio (PSNR), Structural Similarity (SSIM), and Video Quality Measurement (VQM) are used to measure the quality of the video. The client side Quality of Experience metric such as Startup delay, Rebuffering events, and Bitrate switch count was used for evaluation. The proposed scheme is evaluated using dash.js and is compared to existing schemes. The results show significant improvement over existing multimedia content delivery schemes.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.01a
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• pp.129-131
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• 2019

본 논문에서는 다양한 아두이노 무선센서 모듈과 Raspberry Pi, 웹서버를 이용한 IOT 기반 환경정보 수집 시스템을 구현하고, 상품추천시스템을 제안한다. 이 시스템은 사용자가 주변 환경의 데이터를 정확하게 확인하고 활용할 수 있도록 한다. 상품추천 시스템에서는 상점 외부에 부착된 다양한 무선센서 모듈들을 이용해 상점 주변의 환경데이터를 수집하고, 무선통신을 통해 Raspberry Pi로 데이터를 전송한다. 전송된 데이터는 Server로 보내져 Server DB에 저장되고 Server에서 센서값들의 평균값을 계산해 Raspberry Pi로 다시 보내주면 Raspberry Pi에 연결된 모니터를 통해 실시간으로 주변의 데이터와 주변 상황에 맞는 경고 메시지를 보여주고, 이후 필요한 물건을 추천해준다.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.1079-1080
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• 2017

Today multimedia technologies are playing an increasingly important role in games, movies, and live performances. In this paper, we design a flexible interactive system integrated with gesture recognition, skeleton tracking, internet communication, and content edition using multi-sensors to direct and control the performance on stage. In this system, the performer can control the elements showed on stage through corresponding gestures and body movements during the performance. The system provides an easier way for users to change the content of the performance if they intent to do.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.1302-1304
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• 2013

본 논문에서는 로봇이 정해진 폐구간을 이동하기 위해서 위에서 아래로 촬영한 카메라 정보를 활용한다. 로봇을 특정위치로 이동시키기 위해서는 카메라를 제어하는 서버 시스템과 로봇의 위치를 인식하기 위한 마크가 필요하다. 서버는 로봇의 위치를 로봇으로 인식하는 마크의 색 값으로 카메라로부터 인지하고 로봇에 위치 이동 명령을 수행할 서버와 로봇이 네트워크를 통해 Planning을 수행한다. 본 연구에서 휴머노이드 로봇인 나오와 로봇에 위치를 촬영할 카메라 그리고 이미지 처리를 하기 위해 OpenCV와 이동 알고리즘으로 $A^*$를 활용하여 Planning을 구현한다.