Image processing device and image processing method for camera calibration
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United States of America Patent
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Aug 9, 2016
Grant Date -
Apr 5, 2012
app pub date -
Dec 14, 2011
filing date -
Jun 18, 2009
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Abstract
In a calibration device, an image-integration averaging processing unit integrates/averages an image so as to generate an integrated and averaged image, and an edge extracting unit extracts the edges from the integrated and averaged image. A vanishing-point extracting unit calculates vanishing lines by using the edges and identifies the coordinates of the intersection point of the vanishing lines as the coordinates of the vanishing point. An error determining unit compares the coordinates of the current vanishing point with the coordinates of the previous vanishing point so as to determine whether a parameter of the camera needs correcting. In accordance with the result of the determination, a correction processing unit corrects a parameter of the camera.
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