Since May 16, 2006
The negative picture is presented for ten seconds, and "Kinkaku illsuion"
appears for one second. Please fix your eyes on some point. The effect
is strong when you keep watching these images for a long time.
*Kinkaku = The Golden Palace in Kyoto
The "positive" picture shown after the negative one appears to be chromatic as it is, but it is actually monochromatic, as shown below.
Copyright Akiyoshi Kitaoka 2006 (May 16)
This idea has been given by Mr. Walt Anthony. According to his HP, his idea was given from Mr. John Sadowski's HP. I am not sure whether there is further original source or not (see below).
It should be noted that there is a difference from John's, which is characterized by isoluminance in the negative image.
John informed me that John had developed this technique.
The positive image
Watch the left image for a while, and see the right one.