Contrast adjustment in a laser imager
US6272234A · kind A · utility
2Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1998 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Dec 21, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/407
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of processing a digital image comprising the steps of: providing a digital medical image; and processing the digital medical image for contrast as follows: for contrast <0 use a linear function to calculate the entire contrast look-up-table; for contrast 0, the contrast look-up-table is an identity table, and for contrast greater than 0, a linear function is used to calculate the linear region and for regions near D.sub.min and D.sub.max, the nonlinear function y=x.sup.n is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.