The eye can be deceiving. The optical illusions below illustrate how what is perceived is not always reliable. For this reason, we do not use visual methods or pattern matching techniques. Rather, StockSpotter uses digital signal processing (DSP) analysis to detect statistical edge events.


The picture below is comprised of perfect black and white squares - REALLY! Test it by aligning the straight edge of a piece of paper with a horizontal line on the image.





Count the black dots...




Focus on the center dot and move your head forward and backward relative to the screen. If you think the picture is animated, print it out and repeat the process looking at the paper.





Get relatively close to the screen and concentrate on the "+" at the center. The green dot will erase the violet dots. The REALLY weird thing about this one is that there is no green dot at all!





The blue lines form three perfect squares - Guaranteed!





These are also perfect squares