Extraction Method of Light Stripe Center of Linear Structure

Hu Yang; Fang Suping

doi:10.3788/LOP202158.0112005

Journals >Laser & Optoelectronics Progress >Volume 58 >Issue 1 >Page 112005 > Article

Laser & Optoelectronics Progress
Vol. 58, Issue 1, 112005 (2021)

Extraction Method of Light Stripe Center of Linear Structure

Hu Yang^1、2 and Fang Suping^1、2、*

Author Affiliations

¹Institute of Industry & Equipment Technology, Hefei University of Technology, Hefei, Anhui 230009, China

²Anhui Key Laboratory of Aerospace Structural Forming Manufacturing and Equipment, Hefei, Anhui 230009, China

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DOI: 10.3788/LOP202158.0112005 Cite this Article Set citation alerts

Hu Yang, Fang Suping. Extraction Method of Light Stripe Center of Linear Structure[J]. Laser & Optoelectronics Progress, 2021, 58(1): 112005 Copy Citation Text

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Extraction process of light stripe center. (a) Original image; (b) image after threshold segmentation; (c) light stripe boundary; (d) extraction result; (e) normal direction of partial center points; (f) local extraction result

Fig. 1. Extraction process of light stripe center. (a) Original image; (b) image after threshold segmentation; (c) light stripe boundary; (d) extraction result; (e) normal direction of partial center points; (f) local extraction result

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Extraction results of light stripe centers of different shapes. (a) Straight light stripe; (b) extraction result of straight light stripe; (c) V-shaped light stripe; (d) extraction result of V-shaped light stripe

Fig. 2. Extraction results of light stripe centers of different shapes. (a) Straight light stripe; (b) extraction result of straight light stripe; (c) V-shaped light stripe; (d) extraction result of V-shaped light stripe

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Fig. 3. Image to be processed. (a) Light stripe image; (b) gray distribution curve of light stripe section

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Image No.	Average processing time/s		RMSE/pixel
Image No.	Steger algorithm	Proposed algorithm	RMSE/pixel
Fig. 1(a)	50.435	1.887	0.224
Fig. 2(a)	50.667	1.474	0.129
Fig. 2(c)	49.572	1.741	0.185

Table 1. Average processing time and RMSE for each method

Image No.	σ	RMSE/pixel
Image No.	σ	Steger algorithm	Proposed algorithm
1	0	0.0025	0.0032
2	0.2	0.0076	0.0082
3	0.4	0.0147	0.0159
4	0.6	0.0216	0.0325
5	0.8	0.0289	0.0428
6	1.0	0.0371	0.0809

Table 2. RMSE comparison of two methods

Hu Yang, Fang Suping. Extraction Method of Light Stripe Center of Linear Structure[J]. Laser & Optoelectronics Progress, 2021, 58(1): 112005

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