Invention Grant
- Patent Title: Imaging system and method with intelligent digital zooming
- Patent Title (中): 具有智能数码变焦的成像系统和方法
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Application No.: US11454690Application Date: 2006-06-16
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Publication No.: US08054344B2Publication Date: 2011-11-08
- Inventor: Frank N. G. Cheung , Richard Chin , Hector Q. Gonzalez
- Applicant: Frank N. G. Cheung , Richard Chin , Hector Q. Gonzalez
- Applicant Address: US PA Waltham
- Assignee: Raytheon Company
- Current Assignee: Raytheon Company
- Current Assignee Address: US PA Waltham
- Agency: Pillsbury Winthrop Shaw Pittman LLP
- Main IPC: H04N5/262
- IPC: H04N5/262 ; H04N5/225 ; H04N7/18

Abstract:
A system and method for zooming an image. In the illustrative embodiment, the system includes a memory for receiving first and second frames of image data; a motion detector for detecting motion in said first or said second frame of image data; and an intelligent zoom system for zooming said first or said second image using a first or a second zoom method based on a detection of motion by said motion detector on a pixel by pixel basis. In the illustrative embodiment, the invention is scene-based, it works on a pixel by pixel basis to determine if a pixel is in motion. It performs motion related zoom for pixels that are affected by motion and conducts cross-field zoom for steady pixels to reduce motion artifacts in zoom mode. Motion may be determined by comparing frame-to-frame pixel value variations to fixed motion threshold(s) or by other algorithms. Independent-field zoom refers to using information from one input field to form a zoomed picture in one associated output field. Cross-field zoom refers to using information from both input fields to form a picture in an output field. The invention may be used with or without zoom interpolation schemes.
Public/Granted literature
- US20070291138A1 Imaging system and method with intelligent digital zooming Public/Granted day:2007-12-20
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