Depth from defocus calibration
US8542313B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2010 |
| Grant date | Sep 24, 2013 |
| Priority date | — |
| Expiry date | Oct 16, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/743
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device and methods are provided for calculating depth estimation for a digital imaging device are disclosed and claimed. In one embodiment, a method includes detecting a first image associated with a first focus parameter, detecting a second image associated with a second focus parameter, calculating a statistical representation of a region of interest in the first and second images, and determining a ratio for the region of interest based on the statistical representation. The method may further include determining one or more focus characteristics using a memory table based on the determined ratio for the region of interest, and calculating a focus depth for capture of image data based on the determined one or more focus characteristics associated with the memory table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.