A two-tier strategy for priority based critical event surveillance with wireless multimedia sensors

Abstract

Surveillance plays a vital role in protecting infrastructure facilities of a country and improving detection of cross-border activities. Compared to traditional surveillance systems, wireless multimedia sensor networks (WMSN) provide distinct advantages. In this paper we consider the problem of critical event surveillance in a region of interest with the help of WMSN. The challenge here is deployment cost, energyefficient routing and preservation of coverage and connectivity of the network. To keep the deployment cost minimum, we propose a two-tier strategy consisting of (a) densely deployed low cost audio tier nodes and (b) sparsely placed high cost video tier nodes to monitor critical events occurring in a given area. The audio nodes perform the preliminary event detection task, whereas, the base station activates the rotatable-video nodes on a demand basis. Depending upon the cost of potential damage, an event is assigned a priority, and based upon that priority an event is assigned either energy efficient or a delay tolerant path along the audio and video tiers. We also propose two integer linear programming formulations MEAT and MEVT for minimization of energy consumption in audio and video tiers separately. We then present two approaches, namely Greedy and DCSEG, and compare them with a popular existing approach under various scenarios. Simulation results show considerable reduction in the number of active audio and video sensor nodes per event which leads to low deployment cost and reduction of average energy consumption in the network.

Energy Efficient Event Driven Video Streaming Surveillance Using SleepyCAM

“…Our goal is to achieve a low-power operation mode during the waiting time, which constitutes more than 99 percent of a surveillance application lifetime. Previous studies have proposed different techniques to achieve low-power operation of portable devices during idle time by introducing sleep modes and waking-up techniques, such as using wake-onwireless [15] and multi-tier network architecture [18], [7], [19]. However, such approaches are difficult to implement if the hardware sensor platform used as camera node does not support sleep modes.…”

Fractional Frequency Reuse Scheme for Device to Device Communication Underlaying Cellular on Wireless Multimedia Sensor Networks

“…Many problems are considered that can occur in WMSN such as deployment costs, energy-efficient routing, network coverage, and connectivity [ 15 , 16 , 17 ]. One of the fundamental deficiencies that cause these problems is a centralized structure.…”

Precision Security: Integrating Video Surveillance with Surrounding Environment Changes

“…Surveillance plays a vital role in maintaining social security and protecting infrastructure facilities of a country [1,2]. But until now, there are still considerable uncertainties associated with danger understanding and recognition, especially for engineering-critical applications [3][4][5], which can be partly attributed to implications of environment conditions to video recognition efficiency of the surveillance system.…”

“…Objectives in this study are (1) to present a brain-inspired computing of warning level of the implications of surrounding environment changes to video recognition efficiency, (2) to model brain cognition processes and establish theoretical models for precision computation of attention value of EC, and (3) to highlight necessity of introducing proposed models in critical applications.…”