Method for merging digital images to obtain a high dynamic range digital image
US7106913B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2002 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Nov 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of processing digital source images, each represented by pixel matrices, to obtain from two or more source images, representing one and the same real scene and acquired by utilizing different exposure levels, a final digital image capable of reproducing the real scene with an exposure latitude greater than that of each of the source images. The method, which can be advantageously used in digital still cameras, produces the final image by combining the source images with the help of a weighted average constructed pixel by pixel. Thanks to a special filtering to which the weighting coefficients are subjected before the weighted mean operation, the method obtains a final image in which the source images are harmoniously combined with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.