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Recognition of Identifiers from Shipping Container Images Using Fuzzy Binarization and Enhanced Fuzzy RBF Network

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Abstract

The automatic recognition of transport containers using image processing is very hard because of the irregular size and position of identifiers, diverse colors of background and identifiers, and the impaired shapes of identifiers caused by container damages and the bent surface of container, etc. In this paper, we propose and evaluate a novel recognition algorithm for container identifiers that effectively overcomes these difficulties and recognizes identifiers from container images captured in various environments. The proposed algorithm, first, extracts the area containing only the identifiers from a container image by using CANNY masking and bi-directional histogram method. The extracted identifier area is binarized by the fuzzy binarization method newly proposed in this paper. Then a contour tracking method is applied to the binarized area in order to extract the container identifiers which are the target for recognition. This paper also proposes an enhanced fuzzy RBF network that adapts the enhanced fuzzy ART network for the middle layer. This network is applied to the recognition of extracted identifiers. The results of experiment for performance evaluation on the real container images showed that the proposed algorithm works better on the extraction and recognition of container identifiers compared to conventional algorithms.

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Correspondence to Kwang-Baek Kim.

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Kim, KB., Cho, JH. Recognition of Identifiers from Shipping Container Images Using Fuzzy Binarization and Enhanced Fuzzy RBF Network. Soft Comput 11, 213–220 (2007). https://doi.org/10.1007/s00500-006-0062-x

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  • DOI: https://doi.org/10.1007/s00500-006-0062-x

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