TY - JOUR
T1 - 金属零件微小数据矩阵码快速精定位
AU - Yang, Sen
AU - He, Weiping
AU - Wang, Yue
AU - Guo, Gaifang
N1 - Publisher Copyright:
© 2018, Shanghai Jiao Tong University Press. All right reserved.
PY - 2018/7/1
Y1 - 2018/7/1
N2 - Focusing on the deficiencies of traditional data matrix (DM) code localization methods in speed and precision, we proposed a code localization method that structured Gaussian pyramid to extract Harris corner features. Corner density map was smoothed by radial basis function, and rough candidate regions were obtained by threshold and region growing. Next, we computed two stage minimum-area encasing rectangle to implement accurate localization. Finally, we chose the candidate region with maximum score based on three properties of DM code as the real DM region. The result shows that our method which used corner detection and regional growth is robust to the various interferences with high accuracy, such as metal texture, high reflection, scratch marks and occlusion on DM code. The localization time is 25 ms, which is 30 times faster than the compared methods.
AB - Focusing on the deficiencies of traditional data matrix (DM) code localization methods in speed and precision, we proposed a code localization method that structured Gaussian pyramid to extract Harris corner features. Corner density map was smoothed by radial basis function, and rough candidate regions were obtained by threshold and region growing. Next, we computed two stage minimum-area encasing rectangle to implement accurate localization. Finally, we chose the candidate region with maximum score based on three properties of DM code as the real DM region. The result shows that our method which used corner detection and regional growth is robust to the various interferences with high accuracy, such as metal texture, high reflection, scratch marks and occlusion on DM code. The localization time is 25 ms, which is 30 times faster than the compared methods.
KW - Accurate localization
KW - Harris corner
KW - Micro data matrix (DM) code
KW - Minimum-area encasing rectangle
KW - Radial basis function
UR - http://www.scopus.com/inward/record.url?scp=85055482188&partnerID=8YFLogxK
U2 - 10.16183/j.cnki.jsjtu.2018.07.009
DO - 10.16183/j.cnki.jsjtu.2018.07.009
M3 - 文章
AN - SCOPUS:85055482188
SN - 1006-2467
VL - 52
SP - 816
EP - 824
JO - Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University
JF - Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University
IS - 7
ER -