A Novel Approach for Determining Intrinsic Parameters of Camera Using Two Parallelograms

Abstract

Abstract:

Abstract： According to the relationship between crossratio and angle, a novel linear approach was proposed to determine the intrinsic parameters of the camera. The image coordinates of the two circular points were derived from two different methods concerning the images of two parallelograms using the Laguerre theorem and the invariance of crossratio. Then the intrinsic parameters of the camera are linearly calibrated from three images of parallelograms according to the circular points which are in the absolute conic(AC). Compared with the calibration method based on rectangles, this approach further weakens the required conditions. Therefore, it has a wide applicability. Extensive simulations and experimental results with real images show that the proposed approach is practicable.

Key words: , computer vision； camera intrinsic parameter； parallelogram； calibration； cross-ratio invariance

CLC Number:

TP 391

WANG Xiuping1,2,BAI Ruilin1,LIU Ziteng1. A Novel Approach for Determining Intrinsic Parameters of Camera Using Two Parallelograms[J]. Journal of Shanghai Jiaotong University, 2015, 49(03): 366-370.

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A Novel Approach for Determining Intrinsic Parameters of Camera Using Two Parallelograms

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