상세정보
학술지
Power Efficient Clustering for Wireless Multimedia Sensor Network
- 발행일
- 201404
- 출처
- International Journal of Distributed Sensor Networks, v.2014, pp.1-9
- ISSN
- 1550-1329
- 출판사
- Hindawi Publishing
- 협약과제
- 14MR1900, 몰입형 스크린 미디어 서비스산업 촉진을 위한 스마트스페이스 기술개발, 류원
- 초록
- The availability of inexpensive hardware such as CMOS cameras and microphones has fostered the development of wireless multimedia sensor networks (WMSNs). In WMSNs, wirelessly interconnected devices enable ubiquitously retrieving multimedia contents such as video and audio streams, and still images along with scalar data from surroundings for wide range of applications are constrained by processing, memory, and power resources. Image compression via low-complexity and resource efficient transforms has been addressed by several researchers to prolong network lifetime where energy conservation is achieved through sharing computational load among sensor nodes and by adjusting the transmission ranges of camera nodes. However, those schemes are not adaptive to the presence and changes of energy level of computational sensor nodes and to the amount of computational load. We propose a resource and energy efficient distributed image compression algorithm that dynamically configures according to the energy levels and the forwarding strategy that is based on the entropy of the image. The simulation results show that our adaptive distributed image compression scheme significantly prolongs the network lifetime and improves the network utilization efficiency, while maintaining adequate image quality. © 2014 Seng-Kyoun Jo et al.
- KSP 제안 키워드
- Compression Algorithm, Energy conservation, Forwarding strategy, Image Compression, Image quality, Multimedia contents, Network LifeTime, Network utilization, Power-efficient, Resource-efficient, Sensor node