Continuous Visible Query for Three-Dimensional Objects in Spatial Databases

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/mpe/volume-2016/6340856/figures/6340856.fig.002a.svgz" name="6340856.fig.002a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>MinDist for query point</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/mpe/volume-2016/6340856/figures/6340856.fig.002b.svgz" name="6340856.fig.002b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>MinDist for query interval</td></tr></table>

<div>MinDist between a 3D object and query point or query interval.</div>

Mathematical Problems in Engineering

fig2

Figure 2

Figure 2: Continuous Visible Query for Three-Dimensional Objects in Spatial Databases 