Method and apparatus for image signal compensation of dark current, focal plane temperature, and electronics temperature
US7235773B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 2005 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Aug 17, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/711
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for calibration and compensation of a visual sensor system. The visual sensor system includes dark pixels adjacent active pixels on a CCD imaging array, which provide dark current data corresponding to image response data. Concurrently, the temperature of the focal plane of the CCD is measured by one or more temperature sensors disposed on the array. Concurrently, the temperature of a circuit board including a processor is measured by one or more temperature sensors arranged on the circuit board. The image response data, dark current data, and circuit board and focal plane temperatures are used to compensate the image response data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.