Patent Number: 7,821,579

Title: Image enhancing system

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.

Inventors: Lin; Ping-Heng (Taipei, TW), Chung; Hao-Chun (Taipei, TW), Chi; Fu-Chung (Taipei, TW)

Assignee: Alcor Micro, Corp.

International Classification: H04N 5/21 (20060101); H04N 5/57 (20060101)

Expiration Date: 2018-10-26 0:00:00