|  |  | In response to Optical Illusion of the face: caprolibra.com — In resp to: http://digg.com/design/Optical_Illusion_A_Person_in_the_PictureHere is how you do it: 1: normalize image to range [0:1], 2: scale normalized image to some value said 25, 3: add offset (i.e. 230) for which offset+scale=255 for 8-bit image, 4: mask out columns for which every other 3x columns =0, 5: save the image and you are done!!!More... (Design) Comments Email Added 2007-11-19 08:30:02 gooovil