柱面透视投影模型下的全景环形透镜畸变校正

doi:10.3969/j.issn.1001-2400.2013.01.016

Abstract

Abstract:

The cylinder perspective projection model is proposed to correct the image distortion according to the imaging feature of the PAL. In the cylinder projection, model a line in the space is not projected to a line but an ellipse whose short axis is constant. Firstly, the PAL correction model which includes the distortion parameters is constructed. The points on the space line are projected to the points on the cylinder under this model. All spherical points are fitted to the best great circle under the condition that the sum of projection lengths of all points. The distortion parameters are obtained during this procedure. Then the panoramic image is corrected. Simulation and real image experiments demonstrate that the correction results of tangential and radial distortions appear satisfactory. The error is controlled at the sub-pixel level.

Key words: panoramic annular lens, spherical perspective projection, tangential distortion, radial distortion

CLC Number:

TP391

XIAO Xiao;WANG Wei;BI Kai. Panoramic annular lens distortion correction using the cylinder perspective projection model[J].J4, 2013, 40(1): 87-92.

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Panoramic annular lens distortion correction using the cylinder perspective projection model

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