Study on image analysis of high power semiconductor line-laser
-
Corresponding author:
LI Song, yflisong@public.wh.hb.cn
-
Received Date:
2009-10-12
Accepted Date:
2009-11-09
-
Abstract
In order to study the image analysis method suitable for the sectional detection system based on high power semiconductor line-laser, several threshold algorithms were proposed to process and analyze the light-stripe images. An outdoor platform was built to simulate large-visual-angle laser projection, then images were collected by CMOS camera. Three threshold algorithms were introduced to analyze the images,and the center position of the light stripe was extracted by barycenter method, then advantages and disadvantages of the algorithms were compared. Results showed that the improved Otsu method could obtain a good performance. Besides,after considering signal-to-noise ratio, the character of objects and line-laser itself, the common applicable conditions of the algorithm were proposed under the line-laser system.
-
-
References
|
[1]
|
CHEN H D,ZHOU G,WANG C J,et al.An algorithm for laser stripe matching based on the epipolar constraint[J].Laser Technology,2003,27(6):584-587(in Chinese). |
|
[2]
|
HUANG Zh H,SUN D Zh,CAI H Y,et al.Research on a 3-D measuring method for buildings based on fixed scanning points[J].Opto-electronic Engineering,2003,30(1):50-52(in Chinese). |
|
[3]
|
SUBBARAO M,CHOI T.Accurate recovery of three-dimensional shape from image focus[J].IEEE Transactions on Pattern Analysis and Machine Intelligence,1995,17(3):266-274. |
|
[4]
|
HU B,LI D H,JIN G,et al.New method for obtaining the center of structured light stripe by direction template[J].Computer Engineering and Applications,2002,38(11):59-60(in Chinese). |
|
[5]
|
CUI X J,YANG Ch,LIU B H,et al.Self-adaptive iterative method of extracting center of linear-structured light e[J].Journal of Xi'an Jiaotong University,2007,41(1):73-76(in Chinese). |
|
[6]
|
WU G J,WU L L,CANG Y P,et al.A method for calculating the center position of collimated light[J].Optoelectronics Letters,2008,4(2):155-158. |
|
[7]
|
HUANG K,HE P A,FAN R,et al.Uniformization shaping method of line laser beam[J].Journal of Applied Optics,2009,30(3):523-526(in Chinese). |
|
[8]
|
ZHOU Y,HE P A,JIANG Q N,et al.Research of laser beam shaping system[J].Optics Optoelectronic Technology,2006,4(2):26-28(in Chinese). |
|
[9]
|
LIU Y H.Three thresholding algorithms implemented in MATLAB6.5[J].Journal of Xiangnan University,2007,28(5):81-84(in Chinese). |
|
[10]
|
HUANG Y R,WANG Sh.Multilevel thresholding methods for image segmentation with Otsu based on QPSO[C]//Proceedings of the 2008 Congress on Image and Signal Processing.Washington D C:IEEE Computer Society,2008:701-705. |
|
[11]
|
YANG H.Research on thresholding methods for image segmentation[J].Journal of Liaoning University(Natural Sciences Edition),2006,33(2):135-137(in Chinese). |
|
[12]
|
WU Q Y,SU X Y,LI J Zh,et al.A new method for extracting the centre-line of line structure light-stripe[J].Journal of Sichuan University(Engineering Science Edition),2007,39(4):151-155(in Chinese). |
-
-
Proportional views
-
Map
DownLoad: