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Determination of geometric parameters for steroscopic pamorama cameras

Wei S. K., Huang F., Klette R.

Machine Graphics and Vision

2001

Vol. 10, No. 3

399-427

This paper proposes as approach to solving the parameter determination problem for a stereoscopic pamorama camera. The image acquisition parameters have to be calculated under given constraints defined by application requirements, the image acquisition model, and specifications of the targeted 3D scenes. Previous studies on stereoscopic panorama imaging, such as [3,6,24,28,33,39,43,45], have paid great attention on how a proposed imaging approach supports a chosen area of application. The image acquisition parameter determination problem has not yet been dealt with in these studies. The lack of guigance in selecting the image acquisition parameters affects the validity of results obtained for subsequent procesess, [36]. Our approach towards parameter determination allows satisfying the common requirements of 3D scene visualization or reconstruction applications: a proper scene composition in the resultant images; an adequate sampling at a particular scene distance; and the desired stereo quality (i.e. depth levels) over diverse of scenes of interest. The paper details the models, constraints and criteria used for solving the parameter determination problem. Some practical examples are given in order to demonstrate the use of the formulas derived. The error analysis of our determonation approach is also carried out and elaborated in this paper. The study contributes to the design of stereoscopic panorama cameras as well as to manuals for on--sie image acquistion. The results of our studies are also useful for camera calibration, or pose estimation in stereoscopic panoramic imaging.