Dynamic range compression method
US7336309B2 · kind B2 · utility
12Cited by
89References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 3, 2001 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Jan 15, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/571
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for compressing the dynamic range of an image sensor (202) including a multiplicity of pixels. The method includes the steps of exposing each of the pixels to light and producing an associated photocurrent per pixel, representative of the light exposure. Then, on a per-pixel basis, controlling exposure time of each of the pixels on the basis of a monotonically rising convex function of the associated photocurrent of each of the pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.