Title: The fast recognition method for circle group based on regional data acquisition and sub-pixel technology

Authors: Yangpeng Liu; Jianjun Ding; Fengdong Wang; Xingyuan Long; Zhuangde Jiang

Addresses: The State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China ' The State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China; The State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University, Shanghai, 200240, China ' The State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China ' The State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China ' The State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Abstract: This paper introduces a novel method for quickly measuring micro circles and holes group in the process of micro forming. The image of them is binary processed and segmented as connected regions. A moving data acquisition window is established to collect the edge point data of connected region to make circle fit. Then a new data recognition range is built. The edge points in the new data recognition range meeting the requirements are used to make circle fitting by image multiplexing and sub-pixel technology. The recognition of the circle group would be accomplished with the moving of the data acquisition window. The method uses a low memory utilisation rate. It possesses the characters of quick recognition speed and strong anti-interference ability because of the moving data acquisition window technology, image multiplexing and the sub-pixel technology.

Keywords: micro forming; circle fitting; image multiplexing; identification; measurement; micro circles; micro holes; data recognition; circle groups; regional data acquisition; sub-pixel technology; micromachining; moving data acquisition window.

DOI: 10.1504/IJMIC.2016.078328

International Journal of Modelling, Identification and Control, 2016 Vol.26 No.2, pp.152 - 157

Accepted: 16 Sep 2015
Published online: 15 Aug 2016 *

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