Patent · US Active

Image scaler with controllable sharpness

US7957611B2 · kind B2 · utility

5Cited by

5References

64Claims

0Family size

Assignee

Huaya Microelectronics · KY

Inventors

Ge Zhu · Shanghai, CN
Qi Zhang · Hangzhou City, CN
Chieh-Te Chang · Shanghai, CN

Key dates

Filing date	Mar 9, 2006
Grant date	Jun 7, 2011
Priority date	—
Expiry date	Nov 17, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG09G2360/02
WIPO fieldComputer technology
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.