Monitoring Moving Queries inside a Safe Region

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="630396.fig.007a" src="https://static.hindawi.com/articles/tswj/volume-2014/630396/figures/630396.fig.007a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Safe region has only convex edges</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="630396.fig.007b" src="https://static.hindawi.com/articles/tswj/volume-2014/630396/figures/630396.fig.007b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Safe region has convex and concave edges</td></tr></table></td></tr></table>

<table>Safe regions with different edges.</table>

The Scientific World Journal

fig7

Figure 7

Figure 7: Monitoring Moving Queries inside a Safe Region 