Invention Grant
- Patent Title: Global motion vector calculation using phase plane correlation
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Application No.: US13168744Application Date: 2011-06-24
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Publication No.: US08600178B1Publication Date: 2013-12-03
- Inventor: Neil D. Woodall , Guodong Liu , Minghui Yang
- Applicant: Neil D. Woodall , Guodong Liu , Minghui Yang
- Applicant Address: US OR Portland
- Assignee: Pixelworks, Inc.
- Current Assignee: Pixelworks, Inc.
- Current Assignee Address: US OR Portland
- Agency: Marger Johnson & McCollom PC
- Main IPC: G06K9/36
- IPC: G06K9/36

Abstract:
A method of performing motion compensation includes dividing at least one frame of image data into blocks, performing phase plane correlation to determine a correlation surface for each block between a first frame and a second frame, using the correlation surfaces for each block in the first frame to produce a global correlation surface for a first frame, using the global correlation surface to produce a refined correlation surface, selecting peaks in the refined correlation surface, and perform sub-pixel motion vector calculations to produce global motion vectors using the peaks.
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