US 11,854,257 B2
Identifying canopies
Priyank Sameer, Mumbai (IN)
Assigned to HERE GLOBAL B.V., Eindhoven (NL)
Filed by HERE Global B.V., Eindhoven (NL)
Filed on May 18, 2021, as Appl. No. 17/323,698.
Prior Publication US 2022/0374634 A1, Nov. 24, 2022
Int. Cl. G06V 20/10 (2022.01); G06T 7/12 (2017.01); G06F 16/29 (2019.01); G06T 7/13 (2017.01); G06V 10/60 (2022.01)
CPC G06V 20/176 (2022.01) [G06F 16/29 (2019.01); G06T 7/12 (2017.01); G06T 7/13 (2017.01); G06V 10/60 (2022.01); G06T 2207/10032 (2013.01); G06T 2207/30184 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer-implemented method comprising:
receiving a first calculated offset distance corresponding to a measurement between a start point of a shadow cast by a building and a proximate first vertex of a building footprint of the building,
receiving a second calculated offset distance corresponding to a measurement between an end point of the shadow cast by the building and a proximate second vertex of the building footprint, the shadow having been identified from an overhead image of the building, and wherein the building footprint comprises a shadowed side and a non-shadowed side, each running between the start point and the end point of the shadow on a different respective side of the building;
comparing the first and second received offsets to an offset threshold corresponding to distance values; and
in response to both the first and second received offsets exceeding the offset threshold, determining that the building footprint represents a canopy, wherein the canopy comprises at least one of a free-standing roof structure which has at least one open side between the roof and the ground, and a free-standing roof structure which has all sides open.