Abstract

An improved processing approach based on the relation between range accuracy and slicing number is proposed to improve the range accuracy of range-gating laser radar. The sequence of time-slice images is segmented according to their optimal slicing number and processed in segments to achieve the range information of objects. Experimental results indicate that the slicing number has a significant impact on range accuracy, and the highest range accuracy can be achieved when the systems work with an optimal slicing number.

© 2010 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. J. W. McLean, “High-resolution 3D underwater imaging,” Proc. SPIE 3761, 10-19 (1999).
  2. J. Busck and H. Heiselberg, “Gated viewing and high-accuracy three-dimensional laser radar,” Appl. Opt. 43, 4705-4710(2004).
    [CrossRef]
  3. J. Busck and H. Heiselberg, “High accuracy 3D laser radar,” Proc. SPIE 5412, 257-263 (2004).
  4. J. Busck, “Underwater 3-D optical imaging with a gated viewing laser radar,” Opt. Eng. 44, 116001 (2005).
  5. J. Shamir, “Three-dimensional optical interconnection gate array,” Appl. Opt. 26, 3455-3457 (1987).
    [CrossRef]
  6. J. F. Andersen, J. Busck, and H. Heiselberg, “Pulsed Raman fiber laser and multispectral imaging in three dimensions,” Appl. Opt. 45, 6198-6204 (2006).
  7. B. W. Schilling, D. N. Barr, G. C. Templeton, L. J. Mizerka, and C. W. Trussel, “Multiple-return laser radar for three-dimensional imaging through obscurations,” Appl. Opt. 41, 2791-2799 (2002).
    [CrossRef]
  8. C. Jin, Y. Zhao, and Y. Zhang, “Scannerless three-dimensional imaging using a pulsed laser and an intensified charge-coupled device with linearly modulated gain,” Appl. Opt. 48, 3823-3829 (2009).
    [CrossRef]
  9. J. P. Estrera and M. R. Saldana, “Gated power supply technologies for advanced image intensifiers,” Proc. SPIE 4796, 60-70 (2003).
    [CrossRef]

2009 (1)

2006 (1)

2005 (1)

J. Busck, “Underwater 3-D optical imaging with a gated viewing laser radar,” Opt. Eng. 44, 116001 (2005).

2004 (2)

J. Busck and H. Heiselberg, “Gated viewing and high-accuracy three-dimensional laser radar,” Appl. Opt. 43, 4705-4710(2004).
[CrossRef]

J. Busck and H. Heiselberg, “High accuracy 3D laser radar,” Proc. SPIE 5412, 257-263 (2004).

2003 (1)

J. P. Estrera and M. R. Saldana, “Gated power supply technologies for advanced image intensifiers,” Proc. SPIE 4796, 60-70 (2003).
[CrossRef]

2002 (1)

1999 (1)

J. W. McLean, “High-resolution 3D underwater imaging,” Proc. SPIE 3761, 10-19 (1999).

1987 (1)

Andersen, J. F.

Barr, D. N.

Busck, J.

J. F. Andersen, J. Busck, and H. Heiselberg, “Pulsed Raman fiber laser and multispectral imaging in three dimensions,” Appl. Opt. 45, 6198-6204 (2006).

J. Busck, “Underwater 3-D optical imaging with a gated viewing laser radar,” Opt. Eng. 44, 116001 (2005).

J. Busck and H. Heiselberg, “Gated viewing and high-accuracy three-dimensional laser radar,” Appl. Opt. 43, 4705-4710(2004).
[CrossRef]

J. Busck and H. Heiselberg, “High accuracy 3D laser radar,” Proc. SPIE 5412, 257-263 (2004).

Estrera, J. P.

J. P. Estrera and M. R. Saldana, “Gated power supply technologies for advanced image intensifiers,” Proc. SPIE 4796, 60-70 (2003).
[CrossRef]

Heiselberg, H.

Jin, C.

McLean, J. W.

J. W. McLean, “High-resolution 3D underwater imaging,” Proc. SPIE 3761, 10-19 (1999).

Mizerka, L. J.

Saldana, M. R.

J. P. Estrera and M. R. Saldana, “Gated power supply technologies for advanced image intensifiers,” Proc. SPIE 4796, 60-70 (2003).
[CrossRef]

Schilling, B. W.

Shamir, J.

Templeton, G. C.

Trussel, C. W.

Zhang, Y.

Zhao, Y.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (7)

Fig. 1
Fig. 1

Dependence curves between range error and t 1 t 0 .

Fig. 2
Fig. 2

Dependence of range error on slicing number.

Fig. 3
Fig. 3

Dependence of range error on slicing number with the system SNR at 10,000.

Fig. 4
Fig. 4

Dependence of range error on slicing number at different SNRs.

Fig. 5
Fig. 5

Relation between range error and slicing number with background taken into consideration. Nb is defined as the sum of background noise and background object. The background object is a constant; the background noise is a variable.

Fig. 6
Fig. 6

Block diagram of the laser radar system.

Fig. 7
Fig. 7

Images of the outdoor range imaging experiment: (a) picture of an object, (b) range image of the object obtained with the centroid algorithm, (c) range image obtained with the algorithm proposed in this paper. Circle A and ellipse B in Figs. 7a, 7c are added images to denote the crucial differences between these two images.

Equations (10)

Equations on this page are rendered with MathJax. Learn more.

P ( t ) = P r exp ( ( t t 0 ) 2 a 2 2 ) ,
r ( t ) = n = 1 M δ ( t t 1 n T ) g ( t ) ,
s n = P r exp [ ( t 0 t 1 n T ) 2 2 a 2 b 2 a 2 + b 2 ] .
r 0 = c 2 Σ n = 1 M ( t 1 + n T ) ( P r exp [ ( t 0 t 1 n T ) 2 2 a 2 b 2 a 2 + b 2 ] ) Σ n = 1 M ( P r exp [ ( t 0 t 1 n T ) 2 2 a 2 b 2 a 2 + b 2 ] ) .
Δ r = c 2 Σ n = 1 M ( t 1 + n T t 0 ) ( P r exp [ ( t 0 t 1 n T ) 2 2 a 2 b 2 a 2 + b 2 ] ) Σ n = 1 M ( P r exp [ ( t 0 t 1 n T ) 2 2 a 2 b 2 a 2 + b 2 ] ) .
( 1 + n ) 2 T ,
t 1 t 0 = 2 n + 1 4 T
r 0 = c 2 n = m N 2 m + N 2 ( t 1 + n T ) ( P r exp [ ( t 0 t 1 n T ) 2 2 a 2 b 2 a 2 + b 2 ] ) m N 2 m + N 2 ( P r exp [ ( t 0 t 1 n T ) 2 2 a 2 b 2 a 2 + b 2 ] ) ,
s max = P r exp [ ( t 0 t 1 m T ) 2 2 a 2 b 2 a 2 + b 2 ] .
N = 2 T 2 a 2 b 2 ln SNR a 2 + b 2 .

Metrics