Aligning two images by matching their feature points
US10841558B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2017 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Feb 3, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2013/0081
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multiple camera imaging system comprises a first camera image sensor to obtain a first image of a scene and a second camera image sensor to obtain a second image. The system further comprises an image signal processor (ISP) to produce a first roughly-aligned image from the first image and a second roughly-aligned image from the second image. A feature point in the first roughly-aligned image is identified. A center of a search zone is created, which is a combination of the position of the feature point and an associated disparity value from the first and second roughly-aligned images. The search zone is created within the second roughly-aligned image. Candidate feature points are identified within the search zone, which is much smaller than the entire image. A best-matched feature point pair in the first roughly-aligned image and the second roughly-aligned image is then identified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.