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Automatic calibration of stereoscopic cameras in an electronic travel aid for the blind

Pełczyński P., Ostrowski B.

Metrology and Measurement Systems

2013

Vol. 20, nr 2

229--238

The article describes a technique developed for identification of extrinsic parameters of a stereovision camera system for the purpose of image rectification without the use of reference calibration objects. The goal of the presented algorithm is the determination of the mutual position of cameras, under the assumption that they can be modeled by pinhole cameras, are separated by a fixed distance and are moving through a stationary scene. The developed method was verified experimentally on image sequences of a scene with a known structure.