System and method for loading and rendering curved features in a map
US9224218B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2012 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Sep 26, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3867
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Embodiments of a system and method for loading and rendering curved features in a map are described. Embodiments may include a map tool of a mapping or navigation application configured to generate a display for a map that includes one or more curved features (e.g., curved roads or curved polygons). The map tool may be executed in a client/server environment in which a server portion receives digitized map data in the form of polylines, detects a curved feature in the map data by fitting it to a parametric curve, and transmits data representing the parametric curve to a client device for subsequent rendering. The client device may render the curved feature using the received parametric curve data or, dependent on characteristics of the client device, extract data corresponding to points on the parametric curve to generate a triangle mesh for rendering the curved feature at a suitable resolution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.