About region-ping intersections

A region-ping intersection (RP) is the part of a 3D region (R) that intersects a ping (P) in both space and time. The diagrams below show a 3D region and a multibeam ping in a scene, followed by the original ping and intersecting region in a multibeam echogram. On a multibeam echogram, the region-ping intersection is displayed with a black border enclosing an area crosshatched in the color of the analysis region. The crosshatching is twice as dense when the region is selected.

Figure 1. Ping (P) and region (R) in a scene

Figure 2. Region-ping intersection (RP) in a multibeam echogram

See also

About intersections
About region-cell intersections
About surface-ping intersections
School detection on a looped cruisetrack