| 大尺寸全视场目标点的自动定位方法 |
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| 引用本文： | 吴迪,吕乃光,邓文怡. 大尺寸全视场目标点的自动定位方法[J]. 光子学报, 2009, 38(7): 1826-1829 |
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| 作者姓名： | 吴迪 吕乃光 邓文怡 |
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| 作者单位： | 沈阳师范大学,物理科学与技术学院,沈阳,110034;北京邮电大学,电子工程学院,北京,100876;北京信息科技大学,光电信息与通信工程学院,北京,100085 |
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| 基金项目： | 国家自然科学基金，北京市属市管高校人才强教计划，北京市教委科技面上项目，北京市重点实验室(机电系统测控)开放课题，辽宁省自然科学基金 |
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| 摘 要： | 提出了一种目标点全视场自动定位方法,该方法利用回光反射标志点的强反射特性和目标点特征,采用粗精两级定位自动获取目标点中心.实际操作中只需预先设定相关的阈值参量,可快速获取图像中的所有目标点的图像坐标,极大地提高了视觉测量的效率和自动化程度.对于3 008×2 000 pixel大小、包含约140个目标点的RGB图像,利用该方法定位所有目标点的用时为14.9″,定位准确度为1/10 pixel.
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| 关 键 词： | 视觉测量 粗精定位 阈值参量 回光反射标志 图像特征 |
A Method for the Automatic Location of Whole Target Images In Large-Scale Vision Measurement |
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| WU Di,L Nai-guang,DENG Wen-yi. A Method for the Automatic Location of Whole Target Images In Large-Scale Vision Measurement[J]. Acta Photonica Sinica, 2009, 38(7): 1826-1829 |
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| Authors: | WU Di L Nai-guang DENG Wen-yi |
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| Affiliation: | 1 Physical Science and Technical College;Shenyang Normal University;Shenyang 110034;China;2 School of Electronic Engineering;Beijing University of Posts and Telecommunications;Beijing 100876;China;3 School of Optoelectronic Information and Communication Engineering;Beijing Information Science & Technology University;Beijing 100085;China |
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| Abstract: | A method which can be locate all the targets in one image automatically was presented.In practical application,some threshold parameters were presetted according to the high-reflective characteristic and the image features of the retro-reflective targets,and then coarse and fine location steps were performed in turn.Using the method,the efficiency and the degree of automation in practical measurement can be largely improved.For one RGB image with 3 008×2 000 size and about 140 targets,the locating time for all the targets is 14.9″,and the location precision is 1/10 pixel. |
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| Keywords: | Vision measurement Coarse and fine location Threshold parameters Retro-reflective targets Image features |
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