The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2016
Filed:
May. 30, 2013
Google Inc., Mountain View, CA (US);
Olaf Sinram, Dublin, CA (US);
Jamie Adams, San Ramon, CA (US);
Google Inc., Mountain View, CA (US);
Abstract
Aspects of the disclosure relate to generating a digital terrain model ('DTM') from a digital surface model ('DSM'). For example, the DSM may include a plurality pixels associated with coordinate information and elevation information, including the elevation of features such as buildings and large vegetation. Initially, a set of vertices defining a polygon may be identified. A set of seed pixels, corresponding to points of the DSM of “bare” earth (without buildings or large vegetation) may also be identified. These may be the same or different from the set of vertices. An adaptive flood filler algorithm is used to evaluate the pixels of the polygon starting with the seed pixels. This process validates or invalidates the state of the pixels. The result is an approximation of a DTM for the polygon.