Image blur correction device, optical apparatus, and control method
US10748255B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2018 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Sep 12, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image blur correction device acquires a blur detection signal, and separates it into a high frequency band signal component and a low frequency band signal component using an HPF and an LPF. A high frequency side prediction processing unit acquires an output of the HPF, and a low frequency side prediction processing unit acquires an output of the LPF via a down-sampler. A prediction processing unit updates a filter coefficient of a prediction filter using an adaptive algorithm, and performs linear prediction on the blur detection signal. An adder adds an output of the high frequency side prediction processing unit to an output of the low frequency side prediction processing unit via an up-sampler, and outputs a superimposed output signal. Image blur correction control is performed on the basis of a superimposed output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.