Image match for featureless objects
US9390315B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2015 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Jun 25, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10004
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Object identification through image matching can utilize ratio and other data to accurately identify objects having relatively few feature points otherwise useful for identifying objects. An initial image analysis attempts to locate a “scalar” in the image, such as may include a label, text, icon, or other identifier that can help to narrow a classification of the search, as well as to provide a frame of reference for relative measurements obtained from the image. By comparing the ratios of dimensions of the scalar with other dimensions of the object, it is possible to discriminate between objects containing that scalar in a way that is relatively robust to changes in viewpoint. A ratio signature can be generated for an object for use in matching, while in other embodiments a classification can identify priority ratios that can be used to more accurately identify objects in that classification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.