Image enhancing system
US7821579B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2006 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Aug 25, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/94
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image enhancing system uses a perfect reconstructing filter to process image signals within a specified resolution and enhance the image signals. The image enhancing system includes an image-signal-obtaining unit, a first-signal-group processing unit, a high-pass/low-pass-image obtaining unit, a brightness-adjusting unit, a threshold unit, an amplifying unit, an adder and a normalizing unit. The image-signal-obtaining unit obtains nine image signals from three lines of image signals. The first-signal-group processing unit processes the nine image signals. The high-pass/low-pass-image obtaining unit obtains a high-frequency image signal and a low-frequency image signal. The brightness-adjusting unit adjusts the brightness of the low-frequency image signal. The threshold unit processes the noise of the high-frequency image signal. The amplifying unit amplifies the high-frequency image signal. The adder adds the high-frequency image signal and the low-frequency image signal. The normalizing unit normalizes the result of the adder to obtain an enhanced image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.