Shape-Preserving Algorithm for Watermarking 2-D Vector Map Data. - Cheng Yong Shao; Hai Long Wang; Xiamu Niu; Xiao Tong Wang (MMSP, 2005)

A Shape-Preserving Method for Watermarking 2D Vector Maps Based on Statistic Detection. - Cheng Yong Shao; Hai Long Wang; Xiamu Niu; Xiao Tong Wang (IEICE Trans. Inf. Syst., 2006)