Conceptual illustrations of matching based on distance and overlap ratio.

Red denotes input 2D building polygons, green denotes building DB polygons, and yellow represents intersections. [a1] An example of matching where the intersection exceeds 40% of the input 2D building polygon. [a2] An example where the intersection exceeds 40% of the building DB polygons and matches. [b1] Not matched because neither polygon intersects, and the center of gravity is extremely far. [b2] Not matched because the intersection area was less than 40% of the polygons in both polygons.</p

Results of the matching and suggestion process for 2D footprints.

Results of the matching and suggestion process for 2D footprints.</p

Result of the cover ratio calculation for the MMS point cloud.

Green: Buildings with a cover ratio of 40% or more. Yellow: Buildings with a cover ratio between 20% and 40%. Red: Buildings with a cover ratio of less than 20%.</p