Systems and methods for stitching metallographic and stereoscopic images
US9721371B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2015 |
| Grant date | Aug 1, 2017 |
| Priority date | — |
| Expiry date | Jan 28, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/757
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method includes receiving a first image and a plurality of other images of a planar surface of a specimen. The method also includes identifying first scale-invariant features in the first image. The first scale-invariant features are based on a scale-invariant feature transform of the first image. The method includes storing the first scale-invariant features in a grouping. The method includes, for each respective image of the plurality of other images, identifying scale-invariant features based on a scale-invariant feature transform of the respective image; matching the scale-invariant features to the grouping; based on the matching, determining a planar homography of the respective image with respect to the grouping; and adding the scale-invariant features of the respective image to the grouping. The method also includes stitching the first image and the plurality of other images into a composite image based on the planar homographies. A field of view of the specimen in the composite image is greater than a field of view of at least one of the first image or the plurality of other images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.