[1] Chu J H, Tian Y, Su Y T. Screen-camera communication steganography based on frequency constraint[J]. Laser & Optoelectronics Progress, 55, 051003(2018).
[2] Wu X, Zhang J J, Zhang Y H. Design method of optical phase anti-counterfeiting mask based on two-dimensional barcodes[J]. Laser & Optoelectronics Progress, 57, 210604(2020).
[3] Gao X S, Li Y H, Zhang L Q et al. Precise positioning technology for automatic guided vehicles based on SURF algorithm[J]. Laser & Optoelectronics Progress, 56, 101203(2019).
[4] Li J H, Zhang Y T, Yi X et al. Mathematical model of processing parameters and barcode image gray value marked by lasers on aluminium ingot surface[J]. Laser & Optoelectronics Progress, 54, 071203(2017).
[9] Zhang C X, Chen M H, Wang F et al. Optical coherence tomography image denoising algorithm based on wavelet transform and fractional integral[J]. Laser & Optoelectronics Progress, 56, 181008(2019).
[10] Yan C M, Chen J H, Ma Y T et al. Improvement of grey wolf optimization algorithm and its application in QR-code recognition[J]. Laser & Optoelectronics Progress, 57, 021015(2020).
[11] Wu X Y, Zeng Y, Lian H et al. SAE-based hologram restoration algorithm[J]. Electronic Design Engineering, 28, 7-11, 16(2020).
[12] Du Y N. Research on two-dimensional code restoration algorithm based on sparse regularization and deep learning[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 36-48(2019).
[13] Song H Z, Wu X J. Deblurring model of image multi-scale dense network[J]. Laser & Optoelectronics Progress, 56, 211001(2019).
[14] Li M M, Cao P, Feng L P et al. The research of QR code image correction based on image gray feature[C]. //2017 First International Conference on Electronics Instrumentation & Information Systems (EIIS), June 3-5, 2017, Harbin, China.(2017).
[15] Wang S M, Hou A P, Yuan L et al. Mobile robot localization based on graphic features of QR code[J]. Machine Tool & Hydraulics, 47, 28-31, 37(2019).
[16] Chen J, Huang B, Mao J et al. A novel correction algorithm for distorted QR-code image[C]. //2019 3rd International Conference on Electronic Information Technology and Computer Engineering (EITCE), October 18-20, 2019, Xiamen, China., 380-384(2019).
[17] Wakahara T, Yamamoto N. Image processing of 2-dimensional barcode[C]. //2011 14th International Conference on Network-Based Information Systems, September 7-9, 2011, Tirana, Albania., 484-490(2011).
[18] Chang Y H, Chu C H, Chen M S. A general scheme for extracting QR code from a non-uniform background in camera phones and applications[C]. //Ninth IEEE International Symposium on Multimedia (ISM 2007), December 10-12, 2007, Taichung, Taiwan, China., 123-130(2007).
[19] Lay K T, Wang L J, Wang C H. Rectification of QR-code images using the parametric cylindrical surface model[C]. //2015 International Symposium on Next-Generation Electronics (ISNE), May 4-6, 2015, Taipei, Taiwan, China.(2015).
[20] He W P, Lin Q S, Wang W et al. Research on cylinder data matrix barcode recognition[J]. American Applied Sciences Research Institute Procedia, 3, 319-327(2012). http://www.sciencedirect.com/science/article/pii/S2212671612002107
[21] Li H W, Xiong T. Research on P4P algorithm based on quick response code recognition[J]. Laser & Optoelectronics Progress, 57, 121501(2020).
[22] Liu F J, Cai M. Recognition and implementation of cylinder QR code[J]. Computer and Modernization, 110-112, 116(2015).
[23] Otsu N. A threshold selection method from gray-level histograms[J]. IEEE Transactions on Systems, Man, and Cybernetics, 9, 62-66(1979). http://jamia.oxfordjournals.org/lookup/external-ref?access_num=10.1109/TSMC.1979.4310076&link_type=DOI