Researching | Laser Stripe Center Extraction Based on Hessian Matrix and Regional Growth

Laser & Optoelectronics Progress, Volume. 56, Issue 2, 021203(2019)

Laser Stripe Center Extraction Based on Hessian Matrix and Regional Growth

Jian Liu and Lihua Liu^*

Author Affiliations

Information & Control Engineering Facility, Shenyang Jianzhu University, Shenyang, Liaoning 110168, China

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Abstract Get PDF(in Chinese)

Figures&Tables (6)

References (19)

Paper Information

Figures & Tables(6)

Fig. 1. Gray distribution of the section of light strip

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Fig. 2. Flow chart of stripe center extraction algorithm

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Fig. 3. Extraction results by different algorithms. (a) Original image; (b) Steger algorithm;(c) gray-gravity algorithm; (d) proposed algorithm

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Fig. 4. Image with Gaussian white noise

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Table 1. RMS comparison of extraction results by three methods

Table 1. RMS comparison of extraction results by three methods

Image number	$\begin{matrix} σ_{R}^{2} \end{matrix}$	RMS /pixel
Image number	$\begin{matrix} σ_{R}^{2} \end{matrix}$	Steger algorithm	Gray-gravity algorithm	Proposed algorithm
1	0.10	0.19	0.58	0.17
2	0.20	0.12	0.39	0.14
3	0.30	0.29	0.76	0.25
4	0.40	0.36	4.25	0.34
5	0.50	0.41	5.41	0.39
6	0.60	0.14	0.40	0.11
7	0.70	0.26	0.64	0.23
8	0.80	0.31	3.90	0.29
9	0.90	0.40	3.25	0.35
10	1.00	0.52	6.32	0.49

Table 2. Average processing time comparison of extracting results by three methods
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Table 2. Average processing time comparison of extracting results by three methods
Image number Average processing time /s
Steger algorithm Gray-gravity algorithm Proposed algorithm
1 45.26 0.50 1.09
2 43.32 0.39 1.12
3 42.85 0.41 1.05
4 41.64 0.40 0.96
5 38.97 0.42 1.21

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Jian Liu, Lihua Liu. Laser Stripe Center Extraction Based on Hessian Matrix and Regional Growth[J]. Laser & Optoelectronics Progress, 2019, 56(2): 021203

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Paper Information

Category: Instrumentation, Measurement and Metrology

Received: Jun. 27, 2018

Accepted: Jul. 30, 2018

Published Online: Aug. 1, 2019

The Author Email: Liu Lihua (1679417015@qq.com)

DOI:10.3788/LOP56.021203

Topics

laser devices and laser physics

Lasers and Laser Optics

laser manufacturing

Instrumentation, Measurement and Metrology