Systems and methods for generating three dimensional geometry

Patent metadata

Field	Value
Publication number	US-11574439-B2
Application number	US-202217826092-A
Country	US
Kind code	B2
Filing date	May 26, 2022
Priority date	Jul 23, 2013
Publication date	Feb 7, 2023
Grant date	Feb 7, 2023

Abstract

Systems and methods are described for creating three dimensional models of building objects by creating a point cloud from a plurality of input images, defining edges of the building object's surfaces represented by the point cloud, creating simplified geometries of the building object's surfaces and constructing a building model based on the simplified geometries. Input images may include ground, orthographic, or oblique images. The resultant model may be scaled according to correlation with select image types and textured.

First claim

What is claimed:

1. One or more non-transitory computer readable medium storing instructions that, when executed, cause a processor to execute operations comprising:
receiving a three dimensional (3D) point cloud of data points associated with a building object;
identifying a plurality of vertices defining edges of at least one single planar surface of the building object within the 3D point cloud;
outlining the at least one single planar surface based on the identified plurality of vertices;
creating a simplified façade geometry for the at least one single planar surface based on the outlined single planar surface;
correlating data points within the 3D point cloud to the outlined single planar surface;
averaging a planar fit for the outlined single planar surface based on the correlated data points; and
adjusting a position of the simplified façade geometry based on the average planar fit.

2. The one or more non-transitory computer readable medium of claim 1 further storing instructions that, when executed, cause the processor to execute operations comprising receiving an orthogonal image for the building object.

3. The one or more non-transitory computer readable medium of claim 2 further storing instructions that, when executed, cause the processor to execute operations comprising:
identifying a plurality of orthogonal vertices of the orthogonal image;
correlating at least two of the plurality of orthogonal vertices with the adjusted simplified façade geometry; and
constructing a building model representing all surfaces of the building object using at least the correlated plurality of orthogonal vertices.

4. The one or more non-transitory computer readable medium of claim 1 further storing instructions that, when executed, cause the processor to execute operations comprising applying a texture to the at least one planar surface.

5. The one or more non-transitory computer readable medium of claim 4 , wherein the applying a texture comprises mapping at least one ground-level image to the at least one planar surface.

6. The one or more non-transitory computer readable medium of claim 1 further storing instructions that, when executed, cause the processor to execute operations comprising applying a proximity buffer to identify data points proximate one another for correlation to determine an average planar fit.

7. The one or more non-transitory computer readable medium of claim 1 , wherein identifying the plurality of vertices defining edges comprises matching boundaries of the building object from at least one ground-level image.

Assignees

• Hover Inc

Inventors

• Sun Shaohui
• Pavlidis Ioannis
• Altman Adam J

Classifications

• G06F30/13

  Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads · CPC title

• G06F3/14

  Digital output to display device {; Cooperation and interconnection of the display device with other functional units} · CPC title

• G06T2219/004

  Annotating, labelling · CPC title

• G06T2210/04

  Architectural design, interior design · CPC title

• G06T7/62

  of area, perimeter, diameter or volume · CPC title