GEOGRAPHIC INFORMATION SYSTEM (GIS) FOR DISPLAYING 3D GEOSPATIAL IMAGES WITH REFERENCE MARKERS AND RELATED METHODS

摘要

A geographic information system (GIS) (20) may include a display (21), a GIS database (22), and a processor (23). The processor (23) may cooperate with the display (21) and the GIS database (22) to display a three-dimensional (3D) geospatial image including a plurality of spaced-apart reference markers (30a-301) therein. The reference markers (30a-301) may have different visual characteristics indicative of different relative positions within the 3D geospatial image. The processor (23) may also associate with each reference marker (30a-301) selectively displayable position data. The reference markers (30a-301) may have different sizes and/or colors, for example.