Title :
Content-based data prioritization for fast disaster images collection in delay tolerant network
Author :
Fajardo, Jovilyn Therese B. ; Yasumoto, Kiyotoshi ; Ito, Minora
Author_Institution :
Grad. Sch. of Inf. Sci., Nara Inst. of Sci. & Technol., Nara, Japan
Abstract :
When a large-scale disaster strikes, situational awareness over the disaster area is important because first responders need timely and accurate information for disaster relief. However, the communications infrastructure is usually unavailable thus a mobile ad-hoc network is utilized to gather critical information by using the mobile phones of people in the disaster zone as sensing nodes. In this paper, a content-based image prioritization technique in delay tolerant network is proposed to achieve fast collection of images with high priorities. Geotagged disaster images are collected by the users and are assigned priorities based on their content through image processing using OpenCV. A preinstalled mobile application on the users´ phones detects critical content (e.g., fires, road blocks) in the images. The detected images with critical content are sent over the network faster than images with noncritical content in order to address the critical events immediately. Through testing and computer simulation, we confirmed that the proposed method with image prioritization achieved a higher percentage of received images with critical content corresponding to a smaller delivery latency than without image prioritization.
Keywords :
delay tolerant networks; emergency services; mobile ad hoc networks; mobile handsets; object detection; OpenCV; content-based data prioritization; content-based image prioritization technique; delay tolerant network; disaster zone; fast disaster image collection; geotagged disaster images; image processing; mobile ad-hoc network; mobile phones; preinstalled mobile application; sensing nodes; situational awareness; Delays; Detection algorithms; Image processing; Mobile computing; Mobile handsets; Roads; Sensors;
Conference_Titel :
Mobile Computing and Ubiquitous Networking (ICMU), 2014 Seventh International Conference on
Conference_Location :
Singapore
DOI :
10.1109/ICMU.2014.6799086