Classification method based on skeleton lines for map building shapes
US12118767B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2024 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Jun 5, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/422
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed in the present disclosure is a classification method based on skeleton lines for building shapes. The method includes: (1) expanding a template library of buildings by combining building shape classification in architecture and building shape features in real life on the basis of inheriting advantages of a traditional template matching method; (2) avoiding influence of small depressions and protrusions of the buildings on overall shapes by constructing a least-squares template; (3) extracting the skeleton lines of the buildings and calculating feature vectors of the buildings; and (4) calculating similarity between feature vectors of skeleton lines of the buildings and skeleton lines of templates by using cosine similarity, and selecting the template with the highest similarity as a classification result of the building shapes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.