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Copyright of Coal Geology & Exploration is the property of Xian Research Institute of China Coal Research Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In view of the problem that the traditional augmented reality maintenance system can not effectively perceive and judge die state of maintenance, this paper proposed a method based on PNN for maintenance process identification. The strategy shifted the focus from the maintenance object itself to the nearby removed parts placement area, used the eurvelet transform to generate the edge image of the disassembled parts, then generated the Hu invariant moment characteristic value, which was used as the input of PNN neural network to classify and identify the parts of the process, finally got the current maintenance process. Experimental results show that the recognition accuracy of the proposed method is significantly higher than that of the image matching method and eurvelet invariant moment method, which provides a new idea and solution for the scene perception. [ABSTRACT FROM AUTHOR]