Invention Grant
- Patent Title: Correction of image distortion
- Patent Title (中): 图像失真校正
-
Application No.: US12205665Application Date: 2008-09-05
-
Publication No.: US08045822B2Publication Date: 2011-10-25
- Inventor: Alexandre Cellier
- Applicant: Alexandre Cellier
- Applicant Address: FR Montrouge
- Assignee: STMicroelectronics SA
- Current Assignee: STMicroelectronics SA
- Current Assignee Address: FR Montrouge
- Agency: Seed IP Law Group PLLC
- Agent Lisa K. Jorgenson; Hayley J. Stevens
- Priority: FR0706273 20070907
- Main IPC: G06K9/40
- IPC: G06K9/40

Abstract:
An image sensor captures an image of a scene. This captured image has a pincushion distortion relative to an undistorted image of the scene. The distortion is corrected based on an approximation of the distortion D which satisfies the following equation for a given pixel in the captured image: D=(R−R′)/R=Da*(y2−x2+yoffset)+Db*R4, where R is the distance between a pixel, which corresponds in the undistorted image to the given pixel in the captured image, and the center of the undistorted image, R′ is the distance between the given pixel and the center of the captured image, Da and Db are respective distortion parameters of the image sensor, x and y are coordinates of the given pixel in the captured image, R satisfies the following equation: R2=x2+y2 and yoffset corresponds to a constant value.
Public/Granted literature
- US20090067745A1 CORRECTION OF IMAGE DISTORTION Public/Granted day:2009-03-12
Information query