Integrated polar microstructure and template-matching method for optical position measurement

Chenyang Zhao; Chifai Cheung; Mingyu Liu

doi:10.1364/oe.26.004330

Integrated polar microstructure and template-matching method for optical position measurement

Optics Express ◽

10.1364/oe.26.004330 ◽

2018 ◽

Vol 26 (4) ◽

pp. 4330 ◽

Cited By ~ 10

Author(s):

Chenyang Zhao ◽

Chifai Cheung ◽

Mingyu Liu

Keyword(s):

Template Matching ◽

Position Measurement ◽

Matching Method ◽

Optical Position

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A multiple-layer flexible mesh template matching method for non-rigid registration between a pelvis model and CT images

10.1117/12.481354 ◽

2003 ◽

Cited By ~ 4

Author(s):

Jianhua Yao ◽

Russell H. Taylor

Keyword(s):

Template Matching ◽

Ct Images ◽

Matching Method ◽

Rigid Registration ◽

Multiple Layer

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Dynamic target template matching for railway catenary suspension motion detection in wind area

International Journal of Distributed Sensor Networks ◽

10.1177/1550147718797956 ◽

2018 ◽

Vol 14 (9) ◽

pp. 155014771879795 ◽

Cited By ~ 1

Author(s):

Wei Zhou ◽

Heting Xiao ◽

Zhonggang Wang ◽

Lin Chen ◽

Shaoqing Fu

Keyword(s):

Template Matching ◽

Three Dimensional ◽

Moving Target ◽

Maximum Relative Error ◽

Gradual Change ◽

Matching Method ◽

Safety Research ◽

Target Template ◽

Target Templates ◽

Dynamic Target

A dynamic target template matching method was proposed to identify railway catenary suspension movements of wind-induced vibration in wind area. Catenary positioning point was taken as the target template, which was compared with equal-sized image sequentially using the proposed matching difference. And, three-dimensional contour map of matching difference value at each sub-area was obtained, where the target pixel coordinates were determined by the minimum matching difference value. Considering the complex imaging condition, the target template was updated by the detected target image to sense the gradual change of illumination conditions like brightness and contrast. Furthermore, to eliminate detecting errors due to wind-induced camera vibration, both static and moving target templates were identified for acquiring the absolute motion of the moving target. Finally, validation test was performed with animation in PowerPoint. The calculated target displacement agrees well with theoretical motion with maximum relative error of 1.8%. And experiment application was conducted at site by analyzing the relationship between detecting displacement and wind speed. Results indicate that the proposed dynamic target template matching method can meet required engineering precision and provide an effective way for wind-vibration safety research of railway catenary system in wind area.

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