Title :
Accumulative visual information in wireless video sensor network: definition and analysis
Author :
He, Zhihai ; Wu, Dapeng
Author_Institution :
Dept. of Electr. & Comput. Eng., Missouri Univ., Columbia, MO, USA
Abstract :
A wireless video sensor network (WVSN) is a system of spatially distributed video sensors which gather and transmit video information over a wireless ad hoc network. To measure, control and optimize the system performance, the following key research problems need to be addressed: 1) how to measure the amount of visual information collected by the video sensor within its operational lifetime; 2) how to quantitatively compare the information sensing efficiency between two video sensors; 3) how to measure the information sensing efficiency of the whole video sensor network; 4) how to control and optimize the information sensing efficiency of the video sensor network. In this work, we introduce the concept of accumulative visual information (AVT), and use it as a measure for the amount of visual information collected the WVSN. Based on the AVI measure and the power-rate-distortion analysis model developed in our previous work, we optimize the efficiency of the WVSN system.
Keywords :
image sensors; visual communication; wireless sensor networks; accumulative visual information; distributed video sensor; power-rate-distortion analysis model; wireless ad hoc network; wireless video sensor network; Control systems; Information analysis; Intelligent networks; Intelligent sensors; Mobile ad hoc networks; Mobile communication; Sensor phenomena and characterization; Sensor systems; System performance; Wireless sensor networks;
Conference_Titel :
Communications, 2005. ICC 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8938-7
DOI :
10.1109/ICC.2005.1494538
