7 March 2013 Determination of sensor oversize for stereo-pair mismatch compensation and image stabilization
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Abstract
Stereoscopic cameras consist of two camera modules that in theory are mounted parallel to each other at a fixed distance along a single plane. Practical tolerances in the manufacturing and assembly process can, however, cause mismatches in the relative orientation of the modules. One solution to this problem is to design sensors that image a larger field-of-view than is necessary to meet system specifications. This requires the computation of the sensor oversize needed to compensate for the various types of mismatch. This work presents a mathematical framework to determine these oversize values for mismatch along each of the six degrees of freedom. One module is considered as the reference and the extreme rays of the field-of-view of the second sensor are traced in order to derive equations for the required horizontal and vertical oversize. As a further application, by modeling user hand-shake as the displacement of the sensor from its intended position, these deterministic equations could be used to estimate the sensor oversize required to stabilize images that are captured using cell phones.
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Prajit Kulkarni, "Determination of sensor oversize for stereo-pair mismatch compensation and image stabilization", Proc. SPIE 8667, Multimedia Content and Mobile Devices, 86671B (7 March 2013); doi: 10.1117/12.2008598; https://doi.org/10.1117/12.2008598
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