Research on Length Measurement of Workpiece Based on Digital Image Processing Technique

Abstract:

Aiming at the problems such as slow speed and low measuring accuracy existing in measuring length precision of pin parts in mass production, a new approach of high speed and precise measurement is proposed based on the research of the length measuring methods such as parallel laser length measuring method and area array CCD measuring method, etc. Application of (machine vision system and computer measurement & control technology) digital image processing technology can perform automatic high speed measurement and separation of workpiece effectively and accurately. The experimental results show that the machine speed could reach 4-5 pieces/second, with length measuring accuracy of around 10 microns, indicating that the approach proposed in this paper has important practical value.

• Periodical: Advanced Materials Research (Volumes 655-657)
• Pages: 859-867
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.655-657.859
• Online since: January 2013
• Authors: Bin Luo, Wei Liu, Yun Luo
• Keywords: Digital Image Processing, Length Measurement CLC Number, Machine Vision, Pin Part

References

[1] Zhang Shaojun, Ai Jiaojian, et al. Measurement of Geometric Dimensions Using Digital Image Processing Technique [J] Journal of Beijing University of Science & Technology . 2002, 26 (3) : 88-91（In Chinese）.

[2] Kong Bing, Wang Zhao, Tan Yushan. Laser Spot Center Measuring Algorithm Based on Circle Fitting [J]. Infrared and Laser Engineering . 2002, 40 (3) : 50-53（In Chinese）.

[3] Li Honglin, Zhang Zhongmin, Yi Zongqi. Median Filtering Technology Used in Image Processing [J]. Information Technology, 2004, 34 (7): 15-17（In Chinese）.

[4] Cong Hong, Dong Aimei, Wang Huilin, Wang Hongquan, Zheng Guiming; Measurement of Hole Heart Distance with CCD Microscope Camera [J]. The Optical Instrument. 2003, 28 (3) : 46-50（In Chinese）.

[5] Wei Yu, Zhu Shanan. Image Processing Used in Leveling Rod Calibration System [J]. Study of Application of Computer. 2004, 40 (2) : 56-60（In Chinese）.

[6] Lei Jiayong, Da Feipeng, Meng Guangmeng. Research on Center Algorithm in Image Processing [J] Computer and Modernization. 2005, 12 of (3) : 43-46（In Chinese）.

[7] Lu Qiwu. Image Processing Technology Used in Mechanical Measurement System [D]. Zhejiang: Zhejiang University, 2005. 39-45（In Chinese）.