Image processing method for performing pattern matching for detecting a position of a detection target
US10572762B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2016 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Sep 26, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V2201/06
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
To each of points at a position corresponding to each of candidate points extracted from a target object image in a layer upper than a target object image, an area including the point at the position corresponding to the candidate point and an area threshold are set. As a result of predicting a degree of similarity, in a case where the degree of similarity has a value smaller than the area threshold, calculation of the degree of similarity is terminated in the middle. In a case where the degree of similarity has a value equal to or greater than the area threshold, calculation of the degree of similarity is continued, and in a case where the degree of similarity has a value greater than the area threshold when calculation of the degree of similarity is completed, a next area threshold is updated with a value greater than the area threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.