Invention Grant
- Patent Title: Image rotation with substantially no aliasing error
- Patent Title (中): 图像旋转基本上没有混叠误差
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Application No.: US12062160Application Date: 2008-04-03
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Publication No.: US07956873B2Publication Date: 2011-06-07
- Inventor: Ravi Prakash , Clair Frederick Rohe , Robert E. Shirley
- Applicant: Ravi Prakash , Clair Frederick Rohe , Robert E. Shirley
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Hoffman Warnick LLC
- Agent Douglas Lashmit
- Main IPC: G09G5/36
- IPC: G09G5/36

Abstract:
A system, method and program product for rotating a first image in an image buffer such that the resulting, rotated image is substantially free of an aliasing error, i.e., broken lines, stair stepped edges, etc., is disclosed. An algorithm is applied to the first image that uses weighted sums of data points of the first image to create the rotated image. The weighting is based on the skew angle and data point location of the first image. The resulting rotated image also has a reduced data storage space requirement compared to rotated images created by prior art techniques.
Public/Granted literature
- US20080186333A1 IMAGE ROTATION WITH SUBSTANTIALLY NO ALIASING ERROR Public/Granted day:2008-08-07
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