Generation of tone reproduction curves using psychophysical data
US6345128B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1997 |
| Grant date | Feb 5, 2002 |
| Priority date | — |
| Expiry date | Oct 22, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/407
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to producing and reproducing an image using a tone reproduction curve which has been selected based on statistical evaluation of psychophysical data, such as psychophysically quantified subjective judgements. By providing a controlled acquisition and evaluation of psychophysical data to select a tone reproduction curve, visually improved imagery can be assured. Further, once a procedure for controlled acquisition and statistical evaluation of psychophysical data has been established for a given environment, lesser skilled technicians can be used to carry out selection of a tone reproduction curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.