Image signal processing apparatus and image signal processing method
US8836826B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2011 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Nov 5, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/68
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image signal processing apparatus includes an imaging unit having an imaging element to conduct photoelectric conversion on incident light from a subject and output an electric signal, a defective pixel detection unit for detecting a defective pixel in the imaging element, a defective pixel correction unit for correcting the detected defective pixel, an image signal correction unit for conducting image signal correction every arbitrary area on a signal supplied from the defective pixel correction unit, a system control unit for generally controlling those units, and a temperature measurement unit for measuring temperature in the vicinity of the imaging element. The system control unit controls a detection condition to be used when the defective pixel detection unit detects a defective pixel, i.e., one or more of an exposure time, a defective pixel detection threshold, and a gain, by using information of the temperature obtained from the temperature measurement unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.