Invention Grant
- Patent Title: Optical distortion correction in digital video processing applications
- Patent Title (中): 数字视频处理应用中的光学畸变校正
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Application No.: US12137000Application Date: 2008-06-11
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Publication No.: US08396322B1Publication Date: 2013-03-12
- Inventor: Neil D. Woodall , Carl Alelyunas , Minghui Yang
- Applicant: Neil D. Woodall , Carl Alelyunas , Minghui Yang
- Applicant Address: US OR Tualatin
- Assignee: Pixelworks, Inc.
- Current Assignee: Pixelworks, Inc.
- Current Assignee Address: US OR Tualatin
- Agency: Marger, Johnson & McCollom PC
- Main IPC: G06K9/40
- IPC: G06K9/40 ; G06K9/36 ; H04N3/22 ; H04N3/26
Abstract:
Methods for reducing optical distortion such as keystone distortion can include receiving an input image and modifying the input image by applying two separate 1D operations to the input image and applying a polyphase filter to the input image, where the first 1D operation is performed after application of the second 1D operation has begun. The modified image can then be projected.
Information query
