| 摘要 |
This airspace information processing device comprises a transfer unit (2), a line segment generation unit (3), and an airspace recognition unit (4). The transfer unit (2) transfers all or part of a target closed curve (AZ1) to be examined, which comprises one or a plurality of line segments in a spherical plane (CB) and which represents the outline of an airspace, to a different location in the same spherical plane (CB) in such a manner that the resulting transferred image (AZ2) does not intersect the target closed curve (AZ1). The line segment generation unit (3) generates a determination line segment (Ld) which extends from one of the line segments constituting the target closed curve (AZ1) and which intersects the transferred image (AZ2) without intersecting the other line segments of the target closed curve (AZ1). The spherical plane (CB) is divided by the target closed curve (AZ1) into two regions, and the airspace recognition unit (4) recognizes, as an airspace, the one of these two regions in which the determination line segment (Ld) lies. |
