Table of Contents
ISRN Machine Vision
Volume 2013 (2013), Article ID 874084, 7 pages
http://dx.doi.org/10.1155/2013/874084
Research Article

Vision Measurement Scheme Using Single Camera Rotation

College of Computer Science and Engineering, Chongqing University of Technology, Chongqing 400050, China

Received 10 April 2013; Accepted 8 May 2013

Academic Editors: A. Nikolaidis and J. P. Siebert

Copyright © 2013 Shidu Dong. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We propose vision measurement scheme for estimating the distance or size of the object in static scene, which requires single camera with 3-axis accelerometer sensor rotating around a fixed axis. First, we formulate the rotation matrix and translation vector from one coordinate system of the camera to another in terms of the rotation angle, which can be figured out from the readouts of the sensor. Second, with the camera calibration data and through coordinate system transformation, we propose a method for calculating the orientation and position of the rotation axis relative to camera coordinate system. Finally, given the rotation angle and the images of the object in static scene at two different positions, one before and the other after camera rotation, the 3D coordinate of the point on the object can be determined. Experimental results show the validity of our method.