对双镜头二维三角法测距精度的实验研究表明,在大视角下,双镜头二维测距存在较大的测距误差;通过应用小孔成像代替普通镜头成像进行二维测距研究,证明了大视角非近轴光线的镜头失真是造成该误差的主要原因,并且基于实验提出了一种经验修正公式,明显地提高了系统的测距精度和速度.实验结果表明,在50 mm×50 mm的工作区,对应于80°的大视角下,测距系统在x和y方向的平均定位精度均优于2 mm,平均分辨率分别为0.2 mm和0.1 mm.
参考文献
| [1] | Yoshida K,.Hirose S.Laser triangulation range finder available under direct sunlight[C].Proc.of IEEE International Conference on Robotics and Automation,1988,3:1702-1708. |
| [2] | Lamela H,Gomez S,Carpintero G,et al.High speed range map obtaining in a triangulation range finder for mobile robots[C].Proc.of the 1996 IEEE IECON 22nd International Conference,1996,3:1566-1571. |
| [3] | Stefani M A,Junior J C P.Neto L G.A laser triangulation range finder based on a chaotic modulation and decection system[C].Proc.of SPIE,2000,4052:321-326. |
| [4] | Zeng L,YuanF,Song D,et al.A two-beam laser triangulation for measuring the position of a moving object[J].Optics and Lasers in Engineering,1999,31:445-453. |
| [5] | Gorti S,Tone H,Imokawa G.Triangulation method for detecting capillary blood flow and physical characteristics of the skin[J].Appl.Opt.,1999,38:4914-4929. |
| [6] | Gui Huaqiao,Lü Liang,Huang Wei,et al.Coarse error analysis and correction of a two dimensional triangulation range finder[J].Chin.Opt.Lett.,2006,4(2):84-86. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%