Image scaler with controllable sharpness

Details Image scaler with controllable sharpness Image scaler with controllable sharpness

2011-06-07

2011-06-07

Le, Brian Q (Department: 2624)

Image analysis

Image transformation or preprocessing

Changing the image coordinates

C382S254000, C382S263000, C382S264000, C382S293000, C345S660000, C345S665000, C348S441000

Reexamination Certificate

active

07957611

ABSTRACT:
A method and system for scaling an original image into a scaled image is disclosed. Rather than using the corresponding position in the original image to generate the pixels values of a current pixel in the scaled image, image scalers in accordance with the present invention, calculate a high frequency adjusted position based on the high frequency components of pixels near the corresponding position. Pixel values based on the high frequency adjusted position provide better picture quality for the scaled image than pixel values based on the corresponding position. Furthermore, some embodiments of the present invention also use sharpness compensation to further improve the picture quality of the scaled image.

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patent: 7046862 (2006-05-01), Ishizaka et al.
patent: 7391933 (2008-06-01), Wang et al.
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patent: 2005/0025388 (2005-02-01), Damera-Venkata et al.
patent: 2005/0078884 (2005-04-01), Yi
patent: 1308887 (2003-05-01), None

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