Image processing apparatus having unevenly gamut dividing color-converting function
US5610732A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1994 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | Oct 31, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6019
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An uneven dividing unit unevenly divides an input gamut into divisions which have figures similar to one another. An output-value determining unit determines predetermined lattice-point output values relevant to the divisions. A division selecting unit selects a division among the divisions obtained through the uneven dividing unit, the selected division corresponding to given input color-image data. An interpolating unit interpolates final output values for the given input color-image data using the lattice-point output values relevant to the division selected through the division selecting unit. The uneven dividing performed by the uneven dividing unit is that eliminating lattice points, the lattice-point output values of which are not used in the interpolating performed by the interpolating unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.