The Measurement of Small Cylindrical Pieces Based on Digital Image Processing


Article Preview

This paper establishes a monitoring system suitable for online measurement of dimentional parametres of small cylindrical pieces. The system ,which is based on digital image processing ,consists of optical light sources, a CCD camera, PC, and MATLAB digital image processing toolbox. The image acquired by CCD is pre-processed through the procedure of image gray enhancement, image equalization, image binarization and dimentional parameters extraction interface to achieve online measurement. The smallest rectangle method is used to obtain the dimentional parameters. An automatic detection interface of dimentional parameters measurement based on MATLAB is compiled which can provide a solid foundation for the online and fast detection of dimentional parameters based on image processing technology.



Edited by:

Mohamed Othman




X. J. Tian et al., "The Measurement of Small Cylindrical Pieces Based on Digital Image Processing", Applied Mechanics and Materials, Vols. 229-231, pp. 1304-1307, 2012

Online since:

November 2012




[1] LI Xiao-zhou, YU Hua-dong, YU Zhang-jiang, etc. Optical Inspection Method for Surface Defects of Micro-components[J]. ACTA ARMAMENTARII. 2011, 32(7): 872-877.

[2] N.G. Shankar, Z.W. Zhong . Defect detection on semiconductor wafersurfaces[J]. Microelectronic Engineering 77 (2005) 337–346.

[3] Sun Xiaojun. An application of linear array CCD in the system for cylinder surface detection[J]. Optical Technique. 2000, 26(1): 29-31.

[4] K.R. Castleman.Digital Image Processing.Newyork:Prentice Hall,1998.

[5] Sun Changku, You Qiang. Online machine vision method for measuring the diameter and straightness of seamless steel pipes, Optical Engineering, 2001, 40(11): 2565~2571.


[6] D. A. Fadare and A. O. Oni. Development And Application of a Machine Vision System for Measurement of Surface Roughness[J]. ARPN Journal of Engineering and Applied Sciences. 4(5) , (2009).

[7] Liu He. Digital image processing and application [ M]. China Electric Power Press, (2005).

[8] Zhang Haiou, Liu Yun, Wang Guilan, Xia Weisheng. Research on morphological features of plasma jets based on pattern recognition[J]. Mechanical Science and Technology. 2006. 25 (12): 1476-1479.

[9] Zhao Chunhui. Modern Image Processing Technology and Matlab Realization[M]. Beijing: People' Posts And Telecommunications press, (2001).

[10] Bin He. Digital Image Processing [M]. Beijing: People' Posts And Telecommunications Press, (2001).