Method for Vision Measurement Based on Mutual Perpendicular Line Correspondences

We usually can determine object attitude from three lines in general position. For the particular line configuration of three mutual perpendicular lines, it has some particular characteristics three lines in general position don't have. For three lines which are perpendicular to each other, we propose a novel closed-form method to measure object attitude with respect to the camera. The advantage of this closed-form method is that it is simple. Furthermore, it can compute object attitude more quickly than iterative methods because it avoids the iterative process of iterative methods. This vision measurement method can locate object uniquely at last, thus it solves the multi-solution problem and facilitate the application of vision measurement algorithm in practice. Especially, we provide a detailed account of the computational aspects of this method. At last, the experimental results demonstrate this vision measurement method works well. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Harbin University of Science and Technology.