| 单目立体视觉传感器的优化设计及精度分析 |
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| 引用本文： | 闫丽,段发阶. 单目立体视觉传感器的优化设计及精度分析[J]. 传感技术学报, 2006, 19(2): 349-352 |
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| 作者姓名： | 闫丽 段发阶 |
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| 作者单位： | 天津大学精密测试技术及仪器国家重点实验室,天津,300072;天津大学精密测试技术及仪器国家重点实验室,天津,300072 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 设计采用一台CCD摄像机和两组对称反射镜组合实现双目视觉功能的单目立体视觉传感器系统,建立了透视成像数学模型,详细分析了传感器的几何结构参数,例如组内两个反射镜之间的夹角、两组反射镜之间的夹角、反射镜间的距离、反射镜与摄像机的距离等对系统性能的影响并进行了精度计算,为立体视觉传感器的优化设计提供了理论依据.传感器结构紧凑、调节方便,适合近距离高精度测量,目前已成功地应用于正在开发的气液两相三维PIV测量系统中.
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| 关 键 词： | 单目立体视觉 视觉检测 有效视场 三维PIV(particle image velocimetry) |
| 文章编号： | 1004-1699（2006）02-0349-04 |
| 收稿时间： | 2005-06-13 |
| 修稿时间： | 2005-06-13 |
Optimum Design and Accuracy Analysis of Monocular Stereoscopic Vision Sensor System |
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| Yan Li,Duan Fajie. Optimum Design and Accuracy Analysis of Monocular Stereoscopic Vision Sensor System[J]. Journal of Transduction Technology, 2006, 19(2): 349-352 |
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| Authors: | Yan Li Duan Fajie |
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| Affiliation: | State Key Lab of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China |
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| Abstract: | A monocular stereoscopic vision sensor, consisting of one CCD camera and two pairs of symmetry mirrors, is designed for visual detect. A perspective transformation model is established in order to analyze the effect on sensor performance from the geometric parameters, such as the angle between two symmetry mirrors, angle and distance between two pairs of mirrors and the distance between CCD camera and mirrors. The measuring accuracy is related to both the geometry of sensor and the position of measurand. Enough theoretical research is made for the optimum design of stereovision system. The sensor, which is cramped construction and convenient adjustment, has been successfully used in the 3D-PIV measuring system for two-phase gas-liquid flow in the lab. |
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| Keywords: | monocular stereovision vision detect effective angular field 3D-PIV |
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