Ophthalmologic apparatus and method of controlling the same
US10842375B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 2018 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Jan 31, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30041
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ophthalmologic apparatus includes an image sensor that acquires first and second images of an anterior segment of a subject's eye at different timings, and processing circuitry that calculates a rotational movement amount between a partial image in the second image and a corresponding partial image in the first image. The processing circuitry performs registration between the partial images in a rotation direction based on the rotational movement amount and performs a phase only correlation processing to calculate a parallel movement amount. The processing circuitry controls an actuator that moves the subject's eye and the optical system relative to each other based on at least one of the rotational movement amount and the parallel movement amount, specifies the partial image in the second image based on the first image and the second image, and calculates the rotational movement amount between the corresponding partial image and the specified partial image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.