United calibration of the digital camera and the slide projector based on the rotating platform

Jun Tao; Jianqing Zhang; Zuxun Zhang

doi:10.1117/12.654992

3 November 2005 United calibration of the digital camera and the slide projector based on the rotating platform

Jun Tao, Jianqing Zhang, Zuxun Zhang

Proceedings Volume 6043, MIPPR 2005: SAR and Multispectral Image Processing; 604329 (2005) https://doi.org/10.1117/12.654992
Event: MIPPR 2005 SAR and Multispectral Image Processing, 2005, Wuhan, China

Abstract

The digital camera and the slide projector are being frequently used in broad range of the photogrammetric measurements with the development of non-contact measurement in the close-range photogrammetry. In order to take full advantages of the slide projector, the slide projector is steered on the basis of the traditional method of the digital camera taking images. A slide projector and a digital camera form the projector-camera system, which is similar with a binocular vision system in the principle of 3D reconstruction. Before using the projector-camera system, the interior parameters of both have to be calibrated in advance. The paper proposes a flexible and effective technique for the united calibration of the digital camera and the slide projector. The technique only requires a planar grid, a rotating platform and a computer. The algorithm with 2D direct linear transformation (2D-DLT) and collinear equations is used to calibrate the digital camera first. By the similar algorithm above, the interior parameters of the slide projector can be determined too. Then the united calibration of the digital camera and the slide projector is achieved finally. The operation method in detail and the algorithm are addressed systematically and entirely. The feasibility and the exactness of the technique for the united calibration of the digital camera and the slide projector put forward in this paper are verified by the results of real data.

Citation Download Citation

Jun Tao, Jianqing Zhang, and Zuxun Zhang "United calibration of the digital camera and the slide projector based on the rotating platform", Proc. SPIE 6043, MIPPR 2005: SAR and Multispectral Image Processing, 604329 (3 November 2005); https://doi.org/10.1117/12.654992

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