Highlight recovery techniques for shallow depth of field rendering
US10992845B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2019 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Sep 10, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30201
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This disclosure relates to techniques for synthesizing out of focus blurring effects in digital images. Cameras having wide aperture lenses typically capture images with a shallow depth of field (SDOF). SDOF cameras are often used in portrait photography, since they emphasize subjects, while deemphasizing the background via blurring. Simulating this kind of blurring using a large depth of field (LDOF) camera may require a large amount of computational resources, i.e., to simulate the physical effects of using a wide aperture lens, while constructing a synthetic SDOF image. Moreover, cameras having smaller lens apertures, such as those in mobile phones, may not have the ability to accurately estimate or recreate the true color of clipped background light sources. Described herein are techniques to synthesize out of focus background blurring effects that attempt to reproduce accurate light intensity and color values for clipped background light sources in images captured by LDOF cameras.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.