METHOD AND SYSTEM FOR ALIGNING A LINE SCAN CAMERA WITH A LIDAR SCANNER FOR REAL TIME DATA FUSION IN THREE DIMENSIONS
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United States of America Patent
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Issued Date -
Jun 24, 2010
app pub date -
Dec 18, 2009
filing date -
Dec 19, 2008
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Abandoned
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Abstract
An apparatus and method for aligning a line scan camera with a Light Detection and Ranging (LiDAR) scanner for real-time data fusion in three dimensions is provided. Imaging data is captured at a computer processor simultaneously from the line scan camera and the laser scanner from target object providing scanning targets defined in an imaging plane perpendicular to focal axes of the line scan camera and the LiDAR scanner. X-axis and Y-axis pixel locations of a centroid of each of the targets from captured imaging data is extracted. LiDAR return intensity versus scan angle is determined and scan angle locations of intensity peaks which correspond to individual targets is determined. Two axis parallax correction parameters are determined by applying a least squares. The correction parameters are provided to post processing software to correct for alignment differences between the imaging camera and LiDAR scanner for real-time colorization for acquired LiDAR data.
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