US 10,706,618 B2 · 3D building modeling systems

Abstract

Described herein is a process and system for constructing three-dimensional (3D) representations of buildings. The 3D representations of buildings are semantic models that include roof nodes, roof edges, as well as roof faces with associated properties (e.g., pitch, azimuth). The system receives a 2D representation such as a roof outline including nodes connected by edges and associated data such as a height value, a pitch value, an independent structure, or a dependent structure. The system determines height values where a building structure changes. The system propagates a wavefront representing a cross-section of the building to the height values to generate 3D model edges. The 3D representation is generated based on the 3D model edges. The system can create 3D representations of buildings including roof structures of arbitrary complexity and can create representations of dependent roof structures such as dormers.

Claims20

Dependent claims

A method comprising:

receiving a roof perimeter, the perimeter including a set of nodes and edges, at least one edge associated with a pitch, the perimeter representing an outline of the roof;
modeling a wavefront from the perimeter, the wavefront at a first height being a first polygon corresponding to a first horizontal cross-section of the roof;
and
propagating the wavefront vertically in a parallel manner, next wavefronts at increasing heights being other polygons corresponding to other horizontal cross-sections of the roof, at least one wavefront edge propagating from the first height to at least one of the increasing heights at a speed corresponding to the pitch.

1 more element

Dependencies are inferred from the claim text.

3D building modeling systems

Life of this patent

3D building modeling systems

Life of this patent

Abstract

Claims20