Invention Grant
- Patent Title: Image scaler with controllable sharpness
- Patent Title (中): 具有可控清晰度的图像缩放器
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Application No.: US11372395Application Date: 2006-03-09
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Publication No.: US07957611B2Publication Date: 2011-06-07
- Inventor: Ge Zhu , Qi Zhang , Chieh-Te Chang
- Applicant: Ge Zhu , Qi Zhang , Chieh-Te Chang
- Applicant Address: US CA San Jose
- Assignee: Huaya, Microelectronics, Ltd.
- Current Assignee: Huaya, Microelectronics, Ltd.
- Current Assignee Address: US CA San Jose
- Agency: Silicon Valley Patent Group, LLP
- Agent Edward S. Mao
- Priority: CN2005100243324 20050311
- Main IPC: G06K9/32
- IPC: G06K9/32 ; G06K9/40 ; G09G5/00 ; H04N7/01 ; H04N11/20

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.
Public/Granted literature
- US20060274089A1 Image scaler with controllable sharpness Public/Granted day:2006-12-07
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