文章基本信息

标题：A Special Unique Solution Case of the Perspective-three-point Problem for External Parameter Calibration of an Omnidirectional Camera
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作者：Xiaoxiao Zhu ; Qixin Cao
期刊名称：International Journal of Advanced Robotic Systems
印刷版ISSN：1729-8806
电子版ISSN：1729-8814
出版年度：2012
卷号：9
DOI：10.5772/53555
语种：English
出版社：SAGE Publications
摘要：In the field of machine vision, the multi-solution problem of the perspective-three-point (P3P) camera pose estimation problem has been widely researched. Many researchers have tried to find unique solutions that will enable the use of the P3P method in practical applications such as the calibration of external parameters of a camera. Gao found a special case that is very simple and intuitive, but can only be used for a camera with a very large field of view. Therefore, it did not attract much attention. The purpose of this study was to analyse Gao’s special case and use it for calibrating the external parameters of an omnidirectional camera, which is used widely because of its very large field of view. We first verify Gao’s special case and extend its application. We then propose an iterative method for finding the unique solution. After this, we perform a simulation experiment to determine the effect of the configuration of the three control points on the accuracy of the unique solution. Finally, we use an application to examine the efficiency of the method.
关键词：perspective-three-point problem; multi-solution phenomenon; unique positive solution; external parameter calibration; omnidirectional camera