Sang Jun Lee received the B.S. and Ph.D. degrees from the Department of Electrical Engineering, Pohang University of Science and Technology, Pohang, South Korea, in 2011 and 2018, respectively. He developed computer vision and pattern recognition algorithms for the inspection of surface defects on steel products. He currently conducts researches for scene text recognition by using deep convolutional networks. His research interests include computer vision, machine learning, and deep learning.