Concave omnidirectional imaging device for cylindrical object based on catadioptric panoramic imaging

Xiaojun Wu; Yumei Wu; Peizhi Wen

doi:10.1117/1.OE.57.3.033109

28 March 2018 Concave omnidirectional imaging device for cylindrical object based on catadioptric panoramic imaging

Xiaojun Wu, Yumei Wu, Peizhi Wen

Author Affiliations +

Optical Engineering, Vol. 57, Issue 3, 033109 (March 2018). https://doi.org/10.1117/1.OE.57.3.033109

Abstract

To obtain information on the outer surface of a cylinder object, we propose a catadioptric panoramic imaging system based on the principle of uniform spatial resolution for vertical scenes. First, the influence of the projection-equation coefficients on the spatial resolution and astigmatism of the panoramic system are discussed, respectively. Through parameter optimization, we obtain the appropriate coefficients for the projection equation, and so the imaging quality of the entire imaging system can reach an optimum value. Finally, the system projection equation is calibrated, and an undistorted rectangular panoramic image is obtained using the cylindrical-surface projection expansion method. The proposed 360-deg panoramic-imaging device overcomes the shortcomings of existing surface panoramic-imaging methods, and it has the advantages of low cost, simple structure, high imaging quality, and small distortion, etc. The experimental results show the effectiveness of the proposed method.

Citation Download Citation

Xiaojun Wu, Yumei Wu, and Peizhi Wen "Concave omnidirectional imaging device for cylindrical object based on catadioptric panoramic imaging," Optical Engineering 57(3), 033109 (28 March 2018). https://doi.org/10.1117/1.OE.57.3.033109

Received: 12 December 2017; Accepted: 2 March 2018; Published: 28 March 2018

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