Apparatus and methods for two point tone reproduction curve calibration
US8009332B2 · kind B2 · utility
2Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2007 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Jun 28, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/0009
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods provide increased accuracy in recalibrating the tone reproduction curve (TRC) for a photoelectric image sensor that senses density values. The sensor outputs sensed density values for tone patches. A recalibrated TRC is calculated from the original TRC, the known densities of the tone patches, and the sensed density values of the tone patches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.