Plenoptic cameras have been used to computationally generate viewpoint images from the captured light field. This paper aims to provide a prediction of corresponding virtual camera positions based on the parameters of a standard plenoptic camera setup. Furthermore, by tracing light rays from the sensor to the object space, a solution is proposed to estimate the baseline of viewpoints. By considering geometrical optics, the suggested approach has been implemented in Matlab and assessed using Zemax, a real ray tracing simulation tool. Thereby, the impact of different main lens locations is investigated. Results of the baseline approximation indicate that estimates obtained by the proposed model deviate by less than 0.2% compared to the complex real ray tracing method.
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