Stylized procedural modeling for 3D navigation

• US 10,041,807 B2
• Filed: 07/29/2013
• Issued: 08/07/2018
• Est. Priority Date: 01/05/2010
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Ren, Liu, Yan, Zhicheng
• Primary Examiner(s): Kiswanto, Nicholas
• Application Number:
  US13/953,138
• Publication Number:
  US 20130317738A1
• Time in Patent Office: 1,835 Days
• CPC Class Codes: G01C 21/3638 including 3D objects and buildings three dimensional [3D] modelling, e.g. data description of 3D objects G06T17/00; geographic models G06T17/05
• CPC Class Codes: G01C 21/3667 Display of a road map G01C21/3614 takes precedence; guidance using 3D or perspective road maps G01C21/3635
• CPC Class Codes: G06T 17/05 Geographic models

Abstract

A method of displaying a navigation map includes determining a route of a vehicle. A two-dimensional footprint of a building disposed within a geographic area is received within the vehicle. The geographic area includes the route of the vehicle. Attribute information associated with the building is received. The attribute information is received within the vehicle. A visual representation of the building is rendered based upon the two-dimensional footprint and the attribute information.

Claims

1. A method of displaying a navigation map, comprising the steps of:

determining a route of a vehicle;

receiving within the vehicle a two-dimensional footprint of a building that is disposed within a geographic area, the geographic area including the route of the vehicle;

receiving attribute information including a building type associated with the building, the attribute information being received within the vehicle;

generating a three-dimensional graphical model including a geometric structure extending from the two-dimensional footprint, the geometric structure in the three-dimensional graphical model being generated with reference to the geographic area, the attribute information associated with the building, and a geometric complexity level corresponding to a hardware platform in the vehicle; and

rendering a visual representation of the three-dimensional graphical model of the building, the rendering further comprising;

identifying a color to be applied to a first portion of the three-dimensional graphical model based upon the type of the building and the geographic area in which the building is disposed;

identifying a stylized texture decoration to be applied to a second portion of the three-dimensional graphical model based upon the type of the building and the geographic area in which the building is disposed, the second portion being different than the first portion; and

rendering the visual representation with the color being applied to the first portion of the three-dimensional graphical model and the stylized texture decoration being applied to the second portion of the three-dimensional graphical model.

2. The method of claim 1, the generating of the three-dimensional graphical model further comprising:

generating a three-dimensional roof geometry for the three-dimensional graphical model based on the building type and the geographic area.

3. A method of displaying a navigation map, comprising the steps of:

determining a route of a vehicle;

receiving within the vehicle a two-dimensional footprint of a building that is disposed within a geographic area, the geographic area including the route of the vehicle;

receiving within the vehicle attribute information including a building type associated with the building;

decomposing the two-dimensional footprint into tractable parts;

generating a plurality of geometric structures, each geometric structure extending from one of the tractable parts; and

rendering a three-dimensional model of the building based upon a combination of the plurality of geometric structures corresponding to each of the tractable parts, the rendering further comprising;

identifying a color to be applied to a first geometric structure in the plurality of geometric structures of the three-dimensional graphical model based upon the type of the building and the geographic area in which the building is disposed;

identifying a stylized texture decoration to be applied to a second geometric structure in the plurality of geometric structures of the three-dimensional graphical model based upon the type of the building and the geographic area in which the building is disposed, the second geometric structure being different than the first geometric structure; and

rendering the visual representation with the color being applied to the first geometric structure in the plurality of geometric structures in the three-dimensional graphical model and the stylized texture decoration being applied to the second geometric structure in the plurality of geometric structures in the three-dimensional graphical model.

4. The method of claim 3 comprising the further steps of:

determining a target performance level of a hardware platform within the vehicle; and

controlling the geometric complexity of the plurality of geometric structures that are generated for the three-dimensional model of the building in order to meet the target performance level.

5. The method of claim 4 further comprising:

generating a plurality of three-dimensional models corresponding to a plurality of buildings having the type of the building; and

applying the color and the stylized texture decoration to the plurality of geometric structures in each of the plurality of three-dimensional models for the plurality of buildings.

6. The method of claim 3, the generating of the plurality of geometric structures further comprising:

generating a three-dimensional geometric structure corresponding to a roof geometry for the three-dimensional model based on the building type and the geographic area.

7. The method of claim 3 further comprising:

decomposing the two-dimensional footprint into tractable parts including at least one convex quadrilateral and at least one circle;

generating the plurality of geometric structures including a basic room structure corresponding to the convex quadrilateral and a pillar corresponding to the at least one circle.