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Appl. Sci. 2018, 8(11), 2195;

Research Progress of Visual Inspection Technology of Steel Products—A Review

School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
School of Mechanical Engineering, Anyang Institute of Technology, Anyang 455000, China
Author to whom correspondence should be addressed.
Received: 15 September 2018 / Revised: 1 November 2018 / Accepted: 2 November 2018 / Published: 8 November 2018
(This article belongs to the Special Issue Intelligent Imaging and Analysis)
PDF [3829 KB, uploaded 8 November 2018]


The automation and intellectualization of the manufacturing processes in the iron and steel industry needs the strong support of inspection technologies, which play an important role in the field of quality control. At present, visual inspection technology based on image processing has an absolute advantage because of its intuitive nature, convenience, and efficiency. A major breakthrough in this field can be achieved if sufficient research regarding visual inspection technologies is undertaken. Therefore, the purpose of this article is to study the latest developments in steel inspection relating to the detected object, system hardware, and system software, existing problems of current inspection technologies, and future research directions. The paper mainly focuses on the research status and trends of inspection technology. The network framework based on deep learning provides space for the development of end-to-end mode inspection technology, which would greatly promote the implementation of intelligent manufacturing. View Full-Text
Keywords: defect inspection; image processing; feature extraction; classification methods defect inspection; image processing; feature extraction; classification methods

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Sun, X.; Gu, J.; Tang, S.; Li, J. Research Progress of Visual Inspection Technology of Steel Products—A Review. Appl. Sci. 2018, 8, 2195.

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