Prof. Wei Heng Profile

Prof. Wei Heng

at Southeast Univ

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Proceedings Article | 25 August 2009 Paper

A shortcut to align 3D images captured from multiple views

Wei Heng, Hao Wang

Proceedings Volume 7375, 73752H (2009) https://doi.org/10.1117/12.839217

KEYWORDS: 3D image processing, Calibration, Imaging systems, Cameras, Stereoscopic cameras, Image processing, Space telescopes, Mobile communications, Analytical research, Microscopes

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In order to get whole shape of an object, lots of parts of 3D images need to be captured from multiple views and aligned into a same 3D coordinate. That usually involves in both complex software process and expensive hardware system. In this paper, a shortcut approach is proposed to align 3D images captured from multiple views. Employing only a calibrated turntable, a single-view 3D camera can capture a sequence of 3D images of an object from different view angle one by one, then align them quickly and automatically. The alignment doesn't need any help from the operator. It can achieve good performances such as high accuracy, robust, rapidly capturing and low cost. The turntable calibration can be easily implemented by the single-view 3D camera. Fixed with the turntable, single-view 3D camera can calibrate the revolving-axis of the turntable just by measuring the positions of a little calibration-ball revolving with the turntable at several angles. Then system can get the coordinate transformation formula between multiple views of different revolving angle by a LMS algorithm. The formulae for calibration and alignment are given with the precision analysis. Experiments were performed and showed effective result to recover 3D objects.

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