Method for determining and loading an image-dependent look-up table for generating an enhanced image representation
US5802214A · kind A · utility
31Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1995 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Dec 8, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scanner generates a first set of M-bit signals representing an image in a document. A default table translates the M-bit signals into linearized N-bit signals where M>N. A color image processing module processes the N-bit signals to generate an image-dependent look-up table which, thereafter, is loaded into the scanner. The scanner then generates a second set of M-bit signals using a high resolution re-scan of the same image. The second set of M-bit signals are translated into N-bit signals using the image-dependent look-up table to generate an electronic representation with enhancement characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.