Image processing system
US6816610B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1998 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Jul 23, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/57
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing system is arranged to convert data representing a picture element with an original color defined in terms of original brightness and hue values into data representing the picture element with a new color, different than the original color. In the system a new hue value is calculated from the original hue value by way of a transforming circuit 5. The original and new hue values are both processed in look up tables 4, 6 to determine respective inherent brightness values associated therewith. The original brightness value is processed with the inherent brightness values by way of a subtracter 7 and an adder 8 to produce a new brightness value that together with the new hue value defines the new color of the pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.