Beom Su Kim, Hyung Il Koo, and Nam Ik Cho, "Document Dewarping via Text-line based Optimization," Pattern Recognition, Vol. 48, No. 11, pp. 3600 - 3614, Nov. 2015
Byeongyong Ahn, Hyung Il Koo, Hong Il Kim, Jichull Jeong, and Nam Ik Cho, "Efficient Unwrap Representation of Faces for Video Editing," IEEE Signal Processing Letters, Vol. 22, No. 10, pp. 1718 - 1722, Oct. 2015.
Jewoong Ryu, Hyung Il Koo, and Nam Ik Cho, "Word Segmentation Method for Handwritten Documents based on Structured Learning", IEEE Signal Processing Letters, Vol. 22, No. 8, pp. 1161-1165, Aug. 2015.
Jaehyun An, Beom Su Kim, Hyung Il Koo, Nam Ik Cho, "Unified framework for automatic image stitching and rectification," Journal of Electronic Imaging. Vol. 24, No. 3, pp. 033007, May 2015
Wonkyo Seo, Hyung Il Koo, and Nam Ik Cho, "Junction-based Table Detection in Camera-captured Document Images", International Journal on Document Analysis and Recognition, Vol. 18, No. 1, pp 47-57, Mar. 2015.