Algorithm based on symmetry for locating the finder pattern of the QR code

Donghong Hu; Xinmeng Chen; Dan Yu; Weina Liu; Bin Mei

doi:10.1117/12.712726

28 October 2006 Algorithm based on symmetry for locating the finder pattern of the QR code

Donghong Hu, Xinmeng Chen, Dan Yu, Weina Liu, Bin Mei

Proceedings Volume 6420, Geoinformatics 2006: Geospatial Information Science; 64200O (2006) https://doi.org/10.1117/12.712726
Event: Geoinformatics 2006: GNSS and Integrated Geospatial Applications, 2006, Wuhan, China

Abstract

The symbology of the QR Code and the traditional techniques for recognizing the finder pattern of the QR Code were introduced and the disadvantages of these techniques were analyzed. Based on the symmetry of the finder pattern of the QR Code, an algorithm for locating the center of the finder pattern was proposed. By this algorithm, the center of the finder pattern of the QR Code can be located accurately even though one module of the QR Code image occupies only 2.8 pixels or the image is skewed seriously or the image is illuminated not uniformly.

Citation Download Citation

Donghong Hu, Xinmeng Chen, Dan Yu, Weina Liu, and Bin Mei "Algorithm based on symmetry for locating the finder pattern of the QR code", Proc. SPIE 6420, Geoinformatics 2006: Geospatial Information Science, 64200O (28 October 2006); https://doi.org/10.1117/12.712726

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