Image enhancing system

Details Image enhancing system Image enhancing system

2006-07-03

2010-10-26

Hsia, Sherrie (Department: 2622)

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

C348S625000, C348S687000

Reexamination Certificate

active

07821579

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.

REFERENCES:
patent: 2004/0131117 (2004-07-01), Sheraizin et al.

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