Image pickup apparatus with flash band compensation technique, control method therefor, and storage medium
US9967483B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 2017 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Jun 6, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T1/0007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image pickup apparatus which is capable of, even when a flash band appears during a zooming operation, properly compensating for the flash band to generate a post-compensation image having no different levels of luminance. A lens unit has a zoom function. Image information generated based on image signals output from an image pickup device, which sequentially starts exposure and sequentially reads out signals for each row of pixels, is held in a memory unit. Based on the image information, the flash band caused by an external flash and extending across a plurality of frames is detected, and frames in which the flash band was detected are corrected to obtain an image having no different levels of luminance. The frames are corrected according to a calculated zoom change ratio of the lens unit when the zoom change ratio does not fall inside a first range determined in advance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.