Image capturing device and method for shading compensation thereof
US9219869B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2014 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Aug 5, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/0278
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A shading compensation method of an image capturing device, adapted to an image capturing device having a primary lens, a secondary lens, and a diffuser as well as pre-storing a primary-secondary lenses table and a secondary lens-diffuser table, includes the following steps. First, the secondary lens is covered by the diffuser. A scene is simultaneously captured by the primary lens and the secondary lens covered by the diffuser so as to generate a primary image and a diffused image. Next, according to the primary image and the diffused image, a shading compensation table corresponding to the scene is constructed by using the primary-secondary lenses table and the secondary lens-diffuser table. A shading compensation process is then performed on the primary image according to the shading compensation table so as to generate a compensated image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.