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A Data Matrix Code Recognition Method Based on L-Shaped Dashed Edge Localization Using Central Prior.

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Název: A Data Matrix Code Recognition Method Based on L-Shaped Dashed Edge Localization Using Central Prior.
Autoři: Liu, Yi, Song, Yang, Gu, Guiqiang, Luo, Jianan, Wang, Taoan, Jiang, Qiuping
Zdroj: Sensors (14248220); Jul2024, Vol. 24 Issue 13, p4042, 17p
Témata: TWO-dimensional bar codes, INFORMATION services
Abstrakt: The recognition of data matrix (DM) codes plays a crucial role in industrial production. Significant progress has been made with existing methods. However, for low-quality images with protrusions and interruptions on the L-shaped solid edge (finder pattern) and the dashed edge (timing pattern) of DM codes in industrial production environments, the recognition accuracy rate of existing methods sharply declines due to a lack of consideration for these interference issues. Therefore, ensuring recognition accuracy in the presence of these interference issues is a highly challenging task. To address such interference issues, unlike most existing methods focused on locating the L-shaped solid edge for DM code recognition, we in this paper propose a novel DM code recognition method based on locating the L-shaped dashed edge by incorporating the prior information of the center of the DM code. Specifically, we first use a deep learning-based object detection method to obtain the center of the DM code. Next, to enhance the accuracy of L-shaped dashed edge localization, we design a two-level screening strategy that combines the general constraints and central constraints. The central constraints fully exploit the prior information of the center of the DM code. Finally, we employ libdmtx to decode the content from the precise position image of the DM code. The image is generated by using the L-shaped dashed edge. Experimental results on various types of DM code datasets demonstrate that the proposed method outperforms the compared methods in terms of recognition accuracy rate and time consumption, thus holding significant practical value in an industrial production environment. [ABSTRACT FROM AUTHOR]
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  Label: Title
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  Data: A Data Matrix Code Recognition Method Based on L-Shaped Dashed Edge Localization Using Central Prior.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Yi%22">Liu, Yi</searchLink><br /><searchLink fieldCode="AR" term="%22Song%2C+Yang%22">Song, Yang</searchLink><br /><searchLink fieldCode="AR" term="%22Gu%2C+Guiqiang%22">Gu, Guiqiang</searchLink><br /><searchLink fieldCode="AR" term="%22Luo%2C+Jianan%22">Luo, Jianan</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Taoan%22">Wang, Taoan</searchLink><br /><searchLink fieldCode="AR" term="%22Jiang%2C+Qiuping%22">Jiang, Qiuping</searchLink>
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  Data: Sensors (14248220); Jul2024, Vol. 24 Issue 13, p4042, 17p
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  Data: <searchLink fieldCode="DE" term="%22TWO-dimensional+bar+codes%22">TWO-dimensional bar codes</searchLink><br /><searchLink fieldCode="DE" term="%22INFORMATION+services%22">INFORMATION services</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The recognition of data matrix (DM) codes plays a crucial role in industrial production. Significant progress has been made with existing methods. However, for low-quality images with protrusions and interruptions on the L-shaped solid edge (finder pattern) and the dashed edge (timing pattern) of DM codes in industrial production environments, the recognition accuracy rate of existing methods sharply declines due to a lack of consideration for these interference issues. Therefore, ensuring recognition accuracy in the presence of these interference issues is a highly challenging task. To address such interference issues, unlike most existing methods focused on locating the L-shaped solid edge for DM code recognition, we in this paper propose a novel DM code recognition method based on locating the L-shaped dashed edge by incorporating the prior information of the center of the DM code. Specifically, we first use a deep learning-based object detection method to obtain the center of the DM code. Next, to enhance the accuracy of L-shaped dashed edge localization, we design a two-level screening strategy that combines the general constraints and central constraints. The central constraints fully exploit the prior information of the center of the DM code. Finally, we employ libdmtx to decode the content from the precise position image of the DM code. The image is generated by using the L-shaped dashed edge. Experimental results on various types of DM code datasets demonstrate that the proposed method outperforms the compared methods in terms of recognition accuracy rate and time consumption, thus holding significant practical value in an industrial production environment. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Sensors (14248220) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. 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.</i> (Copyright applies to all Abstracts.)
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              Text: Jul2024
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