Hung-Kuo Chu, Wei-Hsin Hsu, Niloy J. Mitra, Daniel Cohen-Or, Tien-Tsin Wong, Tong-Yee Lee ACM SIGGRAPH 2010 Abstract: Camouflage images contain one or more hidden figures that remain imperceptible or unnoticed for a while. The ability to delay the perception of the hidden figures is attributed to the theory that human perception works in two main phases: feature search and conjunction search. Effe