RIDDLE PICTURE WITH HIDDEN FIGURE

摘要

ABSTRACTIn a three-dimensional riddle picture, code bits arearranged on an object distributed in all three space planes.The wanted code information in thee form of a two-dimensionalpicture is obtained only when the three-dimensional objectis looked at from a certain viewing direction. The three-dimensionally arranged code bits then lose their depth effectand combine to form a two-dimensional image.