Illusion images, formerly known as color illusions, is a category of Image games in Dan-Ball. Illusion images use the effect of an negative afterimage, or ghost image to colorize a normal black and white image. This afterimage illusion is used in combination with the normal black and white image to colorize it.
The player stares for about 30 seconds at a fixed black point in the center of a negative of the image's colors. The cone cells in the retina of the human eye get overstimulated and lose sensitivity. When looking on a blank surface, these cone cells remain sending out a weaker signal in contrast to the cone cells which were not affected. Therefore, a negative color image appears.
List of color illusions[]
Icon | Name | Description | Date Implemented |
---|---|---|---|
SAKURA | Flowers. | 13/05/2007 | |
HORYUJI2 | Pagoda in a park. | 30/04/2007 | |
Crocus | Some Crocuses. | 15/04/2007 | |
HORYUJI | Pagoda in the meadow. | 06/04/2007 | |
GORYU | Mountains. | 25/03/2007 | |
CHISHIMAGITYOU | Flowers. | 04/03/2007 | |
Stroll | A building and a tree. | 18/02/2007 |
External Links[]
- Flash main page at Dan-Ball with the list of all illusions.
- Explanation of negative afterimages at Wikipedia.