Method for obtaining a refocused image from a 4D raw light field data using a shift correction parameter
US10334229B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2016 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | May 11, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2013/0074
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for obtaining a refocused image from a 4D raw light field data for a given focus (zfocus) is described. The method is remarkable in that it comprises applying a shift correction parameter on shifted and summed images from said 4D raw light field data, the shifted and summed images being defined as a function of the given focus (zfocus), and the shift correction parameter (Δ) including, for at least a part of pixels of at least two sub-aperture images derived from at least one 4D light field data of a test-chart image, determined shifts for pixels belonging to the part of pixels between the at least two sub-aperture images, the test-chart image comprising patterns adequate to compute disparities between the sub-apertures images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.