• Title/Summary/Keyword: Mobile Video Data

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Video Based Location Service for Mobile Environment (모바일 환경을 위한 비디오 기반의 위치 서비스)

  • 최지훈;김성백;이승용;장병태;이종훈
    • Proceedings of the IEEK Conference
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    • 2003.11a
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    • pp.287-290
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    • 2003
  • In recent years, one of the main trends of GIS is to construct and provide realistic and human-perceptible information of spatial object using video data. The rapid progress of wireless mobile technology makes the multimedia source using video data possible on mobile environment. Instead of traditional map-based service, video-based location services, that provide video data as location context, would be of interest in connection with various mobile applications requiring location service, such as telematics, LBS, etc. In this paper, we present the location service system using geo-referenced video on wireless mobile environment.

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Cost-Efficient Framework for Mobile Video Streaming using Multi-Path TCP

  • Lim, Yeon-sup
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.16 no.4
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    • pp.1249-1265
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    • 2022
  • Video streaming has become one of the most popular applications for mobile devices. The network bandwidth required for video streaming continues to exponentially increase as video quality increases and the user base grows. Multi-Path TCP (MPTCP), which allows devices to communicate simultaneously through multiple network interfaces, is one of the solutions for providing robust and reliable streaming of such high-definition video. However, mobile video streaming over MPTCP raises new concerns, e.g., power consumption and cellular data usage, since mobile device resources are constrained, and users prefer to minimize such costs. In this work, we propose a mobile video streaming framework over MPTCP (mDASH) to reduce the costs of energy and cellular data usage while preserving feasible streaming quality. Our evaluation results show that by utilizing knowledge about video behavior, mDASH can reduce energy consumption by up to around 20%, and cellular usage by 15% points, with minimal quality degradation.

Video Chatting using MPEG-4 in Mobile IPv6 Networks (Mobile IPv6환경에서 MPEG-4를 이용한 화상채팅시스템)

  • Choe, Yun-Ju;Yun, Won-Dong;Kim, Pyung-Soo;Kim, Young-Keun
    • Proceedings of the KIEE Conference
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    • 2004.11c
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    • pp.203-205
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    • 2004
  • We propose a video chatting algorithm using MPEG-4 over Mobile IPv6. This real-time system transmits video and character data based on UDP. To send data efficiently within limited bandwidth, we use a standard multimedia compression algorithm, MPEG-4, that encodes video data and mobile IPv6 guarantees effective mobility. This system presents the example of the mobile multimedia applications that will be the solution for the next internet services.

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A Video Retrieval System for Electric Safety Education based on Mobile Agent (전기 안전 교육을 위한 모바일 에이전트 기반 비디오 검색 시스템)

  • Cho, Hyun-Seob;Lee, Keun-Wang;Kim, Hee-Sook
    • Proceedings of the KIEE Conference
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    • 2005.07d
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    • pp.2830-2832
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    • 2005
  • Recently, retrieval or various video data has become an important issue as more and more multimedia content services are being provided. To effectively deal with video data, a semantic-based retrieval scheme that allows for processing diverse user queries and saving them on the database is required. In this regard, this paper proposes a semantic-based video retrieval system that allows the user to search diverse meanings of video data for electrical safetyrelated educational purposes by means of automatic annotation processing. If the user inputs a keyword to search video data for electrical safety-related educational purposes, the mobile agent of the proposed system extracts the features of the video data that are afterwards learned in a continuous manner, and detailed information on electrical safety education is saved on the database. The proposed system is designed to enhance video data retrieval efficiency for electrical safety-related educational purposes.

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A Video Retrieval System for Animation Using Electric Safety Education Based on Mobile Agent (애니메이션을 이용한 전기 안전 교육용 모바일 에이전트 기반 비디오 검색 시스템)

  • Cho, Hyeon-Seob;Min, Jin-Kyoung;Ryu, In-Ho
    • Proceedings of the KAIS Fall Conference
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    • 2006.05a
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    • pp.320-323
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    • 2006
  • Recently, retrieval of various video data has become an important issue as more and more multimedia content services are being provided. To effectively deal with video data, a semantic-based retrieval scheme that allows for processing diverse user queries and saving them on the database is required. In this regard, this paper proposes a semantic-based video retrieval system that allows the user to search diverse meanings of video data for electrical safetyrelated educational purposes by means of automatic annotation processing. If the user inputs a keyword to search video data for electrical safety-related educational purposes, the mobile agent of the proposed system extracts the features of the video data that are afterwards learned in a continuous manner, and detailed information on electrical safety education is saved on the database. The proposed system is designed to enhance video data retrieval efficiency for electrical safety-related educational purposes.

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The Design Interface for Retrieval Meaning Base of User Mobile Unit (모바일 단말기에서 사용자의 의미기반 검색을 위한 인터페이스 설계)

  • Cho, Hyun-Seob;Oh, Hun
    • Proceedings of the KIEE Conference
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    • 2007.07a
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    • pp.1665-1667
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    • 2007
  • Recently, retrieval of various video data has become an important issue as more and more multimedia content services are being provided. To effectively deal with video data, a semantic-based retrieval scheme that allows for processing diverse user queries and saving them on the database is required. In this regard, this paper proposes a semantic-based video retrieval system that allows the user to search diverse meanings of video data for electrical safetyrelated educational purposes by means of automatic annotation processing. If the user inputs a keyword to search video data for electrical safety-related educational purposes, the mobile agent of the proposed system extracts the features of the video data that are afterwards learned in a continuous manner, and detailed information on electrical safety education is saved on the database. The proposed system is designed to enhance video data retrieval efficiency for electrical safety-related educational purposes.

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A Study on the Displacement of Mobile OTT Video Services on Home TV (모바일 OTT 동영상 서비스 이용이 홈 TV 시청에 미치는 영향에 관한 연구)

  • Kim, Joohyeon
    • The Journal of the Korea Contents Association
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    • v.18 no.8
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    • pp.434-445
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    • 2018
  • This study examined whether mobile OTT video service substitutes home TV by using 3 screen data of Nielson-KoreanClick. According to the 2SLS estimation results, when the time spent on mobile OTT video service increased by 1% p, the time spent watching home TV decreased by 12.4%. The results also showed that 1%p increase in the time spent using YouTube app and the mobile OTT video services provided by telecommunication company(Oksusu, Alleh TV, VideoPortal) reduced the time spent on watching terrestrial channels on TV by 16.2% and 23.9%, respectively. The displacement of mobile OTT video service on home TV will be accelerated in the near future. In order to resolve the issue of regulatory unfairness with pay TV services and to safeguard viewer's interests, discussions to establish regulation for OTT video services should be taken place more quickly.

The Design Interface and Mobile Internet Contents Type Analysis (모바일 인터넷 컨텐츠 유형 분석 및 인터페이스 설계)

  • Cho, Hyun-Seob;Ryu, In-Ho
    • Proceedings of the KAIS Fall Conference
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    • 2011.05a
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    • pp.371-374
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    • 2011
  • Recently, retrieval of various video data has become an important issue as more and more multimedia content services are being provided. To effectively deal with video data, a semantic-based retrieval scheme that allows for processing diverse user queries and saving them on the database is required. In this regard, this paper proposes a semantic-based video retrieval system that allows the user to search diverse meanings of video data for electrical safety-related educational purposes by means of automatic annotation processing. If the user inputs a keyword to search video data for electrical safety-related educational purposes, the mobile agent of the proposed system extracts the features of the video data that are afterwards learned in a continuous manner, and detailed information on electrical safety education is saved on the database. The proposed system is designed to enhance video data retrieval efficiency for electrical safety-related educational purposes.

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Analysis of Factors Affecting on Mobile Video Services' Satisfaction (모바일 동영상 서비스 만족도 결정요인 분석)

  • Kim, Min-Jeong
    • The Journal of the Korea Contents Association
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    • v.16 no.5
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    • pp.35-45
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    • 2016
  • The purpose of this study is to examine factors that influence mobile video services' satisfaction. 362 users who use both DMB and mobile video services complete the questionnaires measuring 6 attribute level satisfactions and total satisfaction of mobile video services, TV contents broadcasting status in mobile video services. The data are analyzed by using frequency analysis, Chi-square test, t-test/F-test, multiple regression and moderated multiple regression. The results of the study are as follows: First, diverse contents, image quality, video streaming quality, user convenience, and data consumption volume affect total satisfaction of mobile video services. Second, TV contents broadcasting status in mobile video services doesn't show positive moderation effect on the relationship between attribute level satisfaction and total satisfaction. Based on the results, the implications and limitations of this study are discussed.

Utility-based Rate Allocation Scheme for Mobile Video Streaming over Femtocell Networks

  • Quan, Shan Guo;Xu, Jian;Kim, Young-Yong
    • Journal of Information Processing Systems
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    • v.5 no.3
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    • pp.151-158
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    • 2009
  • This paper proposes a utility-based data rate allocation algorithm to provide high-quality mobile video streaming over femtocell networks. We first derive a utility function to calculate the optimal data rates for maximizing the aggregate utilities of all mobile users in the femtocell. The total sum of optimal data rates is limited by the link capacity of the backhaul connections. Furthermore, electromagnetic cross-talk poses a serious problem for the backhaul connections, and its influence passes on to mobile users, as well as causing data rate degradation in the femtocell networks. We also have studied a fixed margin iterative water-filling algorithm to achieve the target data rate of each backhaul connection as a counter-measure to the cross-talk problem. The results of our simulation show that the algorithm is capable of minimizing the transmission power of backhaul connections while guaranteeing a high overall quality of service for all users of the same binder. In particular, it can provide the target data rate required to maximize user satisfaction with the mobile video streaming service over the femtocell networks.