Automatic concentricity measurement by image processing

Chen Huei Hsieh, Yue Wei Huang, Menq-Jiun Wu

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Responding to the market demand for high quality and production limited quantity and variety, the automation technology of flexible manufacturing system or computer integration manufacture sytem has being developed. During the automation manufacturing, to some extent the instability of product quality would be resulted from different precision of machine tool, qualification of operators and manufacturing technology. In addition, the utilization of traditional mannual measurement or off-line contact quality inspection would reduce productivity. Therefore, the technology of non-contact on-line product quality inspection is becoming a very important research issue. This report is focusing on the setup of non-contact automatic measurement of concentricity by applying personal computer and image processing technology. LOG and zero-crossing method is used to complete image edge detection. Then curve-fitting is applied to generate the inner circle and outter circle of mechanical part. Subsequently, the coordinate of edge points of the inner and outter circles, together with the least-square error method, will be applied to estimate the concentricity of the mechanical part waiting for inspection. Comparing the result of experiment with the data measured by a FEDERAL high-precision roundest equipment the proposed system is proved with good repetitivity and accuracy.

Original languageEnglish
Title of host publicationConference Proceedings - 10th Anniv., IMTC 1994
Subtitle of host publicationAdvanced Technologies in I and M. 1994 IEEE Instrumentation and Measurement Technology Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)0780318803, 9780780318809
Publication statusPublished - 1994 Jan 1
Event1994 IEEE Instrumentation and Measurement Technology Conference, IMTC 1994 - Hamamatsu, Japan
Duration: 1994 May 101994 May 12

Publication series

NameConference Proceedings - 10th Anniv., IMTC 1994: Advanced Technologies in I and M. 1994 IEEE Instrumentation and Measurement Technology Conference


Conference1994 IEEE Instrumentation and Measurement Technology Conference, IMTC 1994

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics
  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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