Multiple exposure high dynamic range image capture
US8525900B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2011 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | May 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/63
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Techniques for creating a High Dynamic Range (HDR) image within a consumer grade digital camera from a series of images of a scene captured at different exposure levels, and displaying the HDR image on the camera's built-in display are provided. The approach employs mixing images of the series to incorporate both scene shadow and highlight details, and the removing of “ghost” image artifacts appearing in the mixed HDR image resulting from movement in the scene over the time the series images are captured. The low computational resource utilization of the image mixing and ghost removal processing operations, along with the ability to commence image mixing and ghost removal prior to the acquisition of all series images, can significantly reduce the time required to generate and display a tone mapped HDR image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.