On computer vision in wireless sensor networks.

Berry, Nina M. ; Ko, Teresa H.

Sandia National Laboratories

关键词: Cameras;    Data Transmission Sensors.;    Computer Vision.;    Sensors.;    Sensors;   

DOI  :  10.2172/919195
RP-ID  :  SAND2004-4346
RP-ID  :  AC04-94AL85000
RP-ID  :  919195

美国|英语

来源: UNT Digital Library

【 摘 要 】

Wireless sensor networks allow detailed sensing of otherwise unknown and inaccessible environments. While it would be beneficial to include cameras in a wireless sensor network because images are so rich in information, the power cost of transmitting an image across the wireless network can dramatically shorten the lifespan of the sensor nodes. This paper describe a new paradigm for the incorporation of imaging into wireless networks. Rather than focusing on transmitting images across the network, we show how an image can be processed locally for key features using simple detectors. Contrasted with traditional event detection systems that trigger an image capture, this enables a new class of sensors which uses a low power imaging sensor to detect a variety of visual cues. Sharing these features among relevant nodes cues specific actions to better provide information about the environment. We report on various existing techniques developed for traditional computer vision research which can aid in this work.