Automatic localization method of the multi-planar strip in rudder angle measurement
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摘要: 本文提出了一种在舵面角度测量中多平面结构光光条的自动定位方法.该方法首先基于Steger方法提取舵面中多个平面的光条图像中心;然后基于直线约束和距离约束提取出各小直线段,并根据各直线段的直线方向将各小直线段归类为最后的光条直线;最后根据光条直线的位置判断各光条直线所在光平面及所在舵平面.经实验验证,本文方法切实有效,具有较高的鲁棒性.Abstract: An automatic localization method of light strips in multi-planar structures is proposed in order to solve the problem that it is difficult to distinguish light strip regions of irregular surface in rudder angular measurement based on the vision system of line-structured light. Firstly, the sub-pixel centers of curvilinear structures are extracted by Steger algorithm. Secondly, pieces of line segments are detected and labeled using line constraints and distance constraints to calculate the distances and orientations of points. Finally, different planes are located according to light strips positions. Experimental results show that the presented method is convenient and effective.
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Key words:
- structured light /
- strip image /
- angle measurement /
- planar recognition
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[1] 赵海丽,姜会林,王晓曼,等. 空间光通信中高帧频相机动态调光技术研究[J]. 液晶与显示,2012,27(2):267-270. ZHAO H L,JIANG H L,WANG X M,et al.. Dynamic light-adjusting technology of high frame frequency CCD camera in space optical communication system[J]. Chinese J. Liquid Crystals and Displays,2012,27(2):267-270.(in Chinese)
[2] 唐艳秋,张星祥,李新娥,等. 基于人眼视觉灰度识别特性的图像动态范围小波变换处理方法[J]. 液晶与显示,2012,27(3):385-390. TANG Y Q,ZHANG X X,LI X E,et al.. Image processing method of dynamic range with wavelet transform based on human visual gray recognition characteristics[J]. Chinese J. Liquid Crystals and Displays,2012,27(3):385-390.(in Chinese)
[3] 冯小勇,赵忠华,刘新明. 日间恒星实时探测的视频图像处理[J]. 中国光学,2011,4(6):622-628. FENG X Y,ZHAO ZH H,LIU X M. Video image processing of real-time star detection in day light[J]. Chinese Optics,2011,4(6):622-628.(in Chinese)
[4] 马庆坤,乔彦峰,王晓明,等. 基于光学测量手段实时动态测量船体水平姿态[J]. 中国光学,2012,5(2):189-193. MA Q K,QIAO Y F,WANG X M,et al.. Real-time measurement of dynamic horizontal attitudes of ships based on optical method[J]. Chinese Optics,2012,5(2):189-193.(in Chinese)
[5] 金占雷,刘雪峰. 多目标探测的摆镜动态角位置测量方法[J]. 光学与光电技术,2012,10(1):18-21. JIN ZH L,LIU X F. Dynamic angle measurement method for swing mirror based on multi-targets detection[J]. Optics Optoelectronic Technology,2012,10(1):18-21.(in Chinese)
[6] 张广军,刘震,魏振忠,等. 基于线结构光的四通道舵偏角同步动态测量系统[J]. 仪器仪表学报,2010,31(8):1910-1915. ZHANG G J,LIU ZH,WEI ZH ZH,et al.. Four-channel synchronous dynamic measurement system for elevator angles based on line structured light[J]. Chinese J. Scientific Instrument,2010,31(8):1910-1915.
[7] 李磊刚,梁晋,唐正宗,等. 飞机结构件运动数据的动态视觉测量系统[J]. 光学精密工程,2012,20(9):1929-1938. LI L G,LIANG J,TANG ZH Z,et al.. Optical and dynamic measuring system for movement data of aircraft structural parts[J]. Opt. Precision Eng.,2012,20(9):1929-1938..
[8] 胡浩,梁晋,唐正宗,等. 数字图像相关法测量金属薄板焊接的全场变形[J]. 光学精密工程,2012,20(7):1636-1644. HU H,LIANG J,TANG ZH Z,et al.. Measurement of full-field deformations in metal sheet welding processes by image correlation method[J]. Opt. Precision Eng,2012,20(7):1636-1644.(in Chinese)
[9] 胡文川,裘祖荣,张国雄. 大尺寸空间异面直线夹角的检测[J]. 光学精密工程,2012,20(7):1427-1433. HU W C,QIU Z R,ZHANG G X. Measurement of large-scale space angle formed by non-uniplanar lines[J]. Opt. Precision Eng.,2012,20(7):1427-1433.(in Chinese)
[10] STEGER C. An unbiased detctor of curvilinear structures[J]. IEEE,1998,20(2):113-125.
[11] ZHANG Z Y. A flexible new technique for camera calibration[J]. IEEE,2000,22(11):1330-1334.
[12] ZHOU F Q,ZHANG G J. Complete calibration of a structured light stripe vision sensor through planar target of unknown orientations[J]. Image and Vision Computing,2005,23:59-67.
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