A Human–machine interaction system requires precise information about the user’s body position, in order to allow a natural 3D interaction in stereoscopic augmented reality environments, where real and virtual objects should coherently coexist. The diffusion of RGB-D sensors seems to provide an effective solution to such a problem. Nevertheless, the interaction with stereoscopic 3D environments, in particular in peripersonal space, requires a higher degree of precision. To this end, a reliable calibration of such sensors and an accurate estimation of the relative pose of different RGB-D and visualization devices are crucial. Here, robust and straightforward procedures to calibrate a RGB-D camera, to improve the accuracy of its 3D measurements, and to co-register different calibrated devices are proposed. Quantitative measures validate the proposed approach. Moreover, calibrated devices have been used in an augmented reality system, based on a dynamic stereoscopic rendering technique that needs accurate information about the observer’s eyes position.

Calibrated depth and color cameras for accurate 3D interaction in a stereoscopic augmented reality environment

CANESSA, ANDREA;CHESSA, MANUELA;GIBALDI, AGOSTINO;SABATINI, SILVIO PAOLO;SOLARI, FABIO
2014-01-01

Abstract

A Human–machine interaction system requires precise information about the user’s body position, in order to allow a natural 3D interaction in stereoscopic augmented reality environments, where real and virtual objects should coherently coexist. The diffusion of RGB-D sensors seems to provide an effective solution to such a problem. Nevertheless, the interaction with stereoscopic 3D environments, in particular in peripersonal space, requires a higher degree of precision. To this end, a reliable calibration of such sensors and an accurate estimation of the relative pose of different RGB-D and visualization devices are crucial. Here, robust and straightforward procedures to calibrate a RGB-D camera, to improve the accuracy of its 3D measurements, and to co-register different calibrated devices are proposed. Quantitative measures validate the proposed approach. Moreover, calibrated devices have been used in an augmented reality system, based on a dynamic stereoscopic rendering technique that needs accurate information about the observer’s eyes position.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/585732
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