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Optical Engineering

Generalized camera calibration model for trapezoidal patterns on the road
Author(s): Clement Chun Cheong Pang; Seakay Siqi Xie; Sze Chun Wong; Keechoo Choi
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Paper Abstract

We introduce a generalized camera calibration model that is able to determine the camera parameters without requiring perfect rectangular road-lane markings, thus overcoming the limitations of state-of-the-art calibration models. The advantage of the new model is that it can cope in situations where road-lane markings do not form a perfect rectangle, making calibration by trapezoidal patterns or parallelograms possible. The model requires only four reference points—the lane width and the length of the left and right lane markings—to determine the camera parameters. Through real-world surveying experiments, the new model is shown to be effective in defining the 2D/3D transformation (or vice versa) when there is no rectangular pattern on the road, and can also cope with trapezoidal patterns, near-parallelograms, and imperfect rectangles. This development greatly increases the flexibility and generality of traditional camera calibration models.

Paper Details

Date Published: 30 January 2013
PDF: 20 pages
Opt. Eng. 52(1) 017006 doi: 10.1117/1.OE.52.1.017006
Published in: Optical Engineering Volume 52, Issue 1
Show Author Affiliations
Clement Chun Cheong Pang, The Univ. of Hong Kong (Hong Kong, China)
Seakay Siqi Xie, The Univ. of Hong Kong (Hong Kong, China)
Sze Chun Wong, The Univ. of Hong Kong (Hong Kong, China)
Keechoo Choi, Ajou Univ. (Korea, Republic of)

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