基于同心圆阵列的结构光主动视觉系统标定算法

doi:10.12263/DZXB.20191033

电子学报 ›› 2021, Vol. 49 ›› Issue (3): 536-541.DOI: 10.12263/DZXB.20191033

基于同心圆阵列的结构光主动视觉系统标定算法

李燕, 严永财

暨南大学, 广东广州 510632

收稿日期:2019-09-09 修回日期:2020-10-12 出版日期:2021-03-25
- 作者简介:
- 李燕女,1975年10月出生,安徽合肥人.暨南大学计算机科学系副教授,博士.研究方向:计算机视觉,图像处理.E-mail:yanlics@qq.com;严永财 男,1989年6月出生,广东惠州人.毕业于暨南大学计算机科学系,获硕士学位.现就职于快手科技有限公司(深圳).研究方向:计算机视觉.
- 基金资助:
- 国家自然科学基金项目 (No.62071201）

A Novel Calibration Method for Active Vision System Based on Array of Concentric Circles

LI Yan, YAN Yong-cai

Jinan University, Guangzhou, Guangdong 510632, China

Received:2019-09-09 Revised:2020-10-12 Online:2021-03-25 Published:2021-03-25
- Supported by:
- National Natural Science Foundation of China (No.62071201)

摘要/Abstract

摘要： 投影仪向绘制有同心圆阵列的标定板投射彩色同心圆，利用同心圆投影满足的几何约束确定圆心图像坐标，计算标定平面、投影平面和相机成像平面之间的单应，实现系统标定.利用颜色信息分离投影同心圆和标定板标记图像，简化标定步骤减少图像采集数量；同时通过交比不变性实现同心圆自动匹配，避免人工干预.实验结果证明算法简单高效.

关键词: 标定, 主动视觉系统, 投影仪, 结构光, 同心圆, 三维重建

Abstract: A novel calibration method is proposed for active vision systems. Projector projects colored concentric circles to a calibration plane, on which an array of concentric circles is printed. The centers of the circles in image frame are identified with geometry constraints, with which the homographies between the calibration plane, image plane and projector plane are estimated. The method uses color information to separate the image of projected circles and that of the circle patterns on calibration plane, which reduces the number of required images and simplifies the calibration procedure. To avoid manual intervention, cross-ratio invariance is used to match concentric circles automatically. Experimental results prove that the algorithm is simple and efficient.

Key words: calibration, active vision system, projector, structured light, concentric circle, 3D reconstruction

中图分类号:

TP391

李燕, 严永财. 基于同心圆阵列的结构光主动视觉系统标定算法[J]. 电子学报, 2021, 49(3): 536-541.

LI Yan, YAN Yong-cai . A Novel Calibration Method for Active Vision System Based on Array of Concentric Circles[J]. Acta Electronica Sinica, 2021, 49(3): 536-541.

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基于同心圆阵列的结构光主动视觉系统标定算法

A Novel Calibration Method for Active Vision System Based on Array of Concentric Circles

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