Grayscale Image Hiding Based on Modulus Function and Greedy Method. - Yu-Chen Hu; Chih-Chiang Tsou; Bing-Hwang Su (Fundam. Informaticae, 2008)

Fast VQ codebook search algorithm for grayscale image coding. - Yu-Chen Hu; Bing-Hwang Su; Chih-Chiang Tsou (Image Vis. Comput., 2008)