Our approach can be further extended to detect other airport
signs and markings of operation safety interest. We believe
this a promising way to promote pilots’ situational awareness
when operating at complex major airports and enhance runway
incursion avoidance. Future directions include: (1) Set up a
database for airport signs and markings and combine featurebased methods to existing methods to enhance the robustness
against perspective distortion, image blur, night operation and
false positives caused by similar objects in the vicinity. (2) Expand the system’s capability to detect airport location/direction
signs, ILS hold-short lines, movement-nonmovement hold