A tri-directional spotlight filter for object contour extraction. - Roy Chaoming Hsu; Chia Hung Hsu; Cheng-Ting Liu; Guo-Hua Qiu (ICAILP, 2014)

Greedy algorithm for image quality optimisation based on turtle-shell steganography. - Guo-Hua Qiu; Chin-Feng Lee; Chin-Chen Chang 001 (Int. J. Comput. Sci. Eng., 2020)

Turtle-shell data embedding method with high image fidelity. - Guo-Hua Qiu; Chin-Feng Lee; Chinchen Chang 001 (Int. J. Embed. Syst., 2021)