CS 3451 Summer 2006 - Project 1

Voting Results
# Image Team Members Design Rationale Drift Illusion Explaination
#1 Trung Lai
Hai Phan
The first idea that came to our heads was a school of fishes swimming around a pool. So, we made up rings after rings of fishes swimming in same direction as pairs. The Bezier lines in the background helped aid as a movement director for the whole picture. There are 2 reasons:
   a. The colors on each fish turns from light to dark (yellow tail to gray tail) and then from dark to light again (black middle to purple-pink head). And since the movement of color as our eyes predicted is from light to dark and from dark to bright, so our eyes trick us into believing there is a movement from the tail to the head of the fish. When combining them in rings of consecutive items, the illusion momentum becomes greater.
   b. The orange Bezier curves in the background help to direct attention toward the center. We all know that your eyes tend to move along a curve much more smoothly than sharp turn lines. Therefore, with such curves in the background, it helps to direct the observer toward the center of the frame and make the movement of rings of fishes more apparent.
#2 Nick Bowman
Emily Ewald
When first starting on this project it appeared to be a good learning tool to try and recreate the original form of the illusion with processing. From here we came up with several variations or orientations and using variations in colors to achieve similar effects as Kitaoka. Our final rendition is spiral in shape and is a representation of a spiral traveling downwards and perhaps back up while using the illusion of rotation. While following one of the spirals down, the other two spirals appear to rotate because they are being seen in one's peripheral vision. The drift illusion uses variations in lighter and darker colors to trick us into thinking that movement is occurring. When viewed in the peripheral vision where our resolution to detail is not as crisp, the use of light to dark color is used to create the illusion of rotation. The simplest way to think of this is using gray scale or black and white, but in our case we are using color. If the images we created were unsaturated completely and turned to gray scale the same phenomenon would occur because of the transition from light gray to dark gray.
#3 Taneshia Marshall
Alex Okafor
The artistic goal was for the viewer to percieve a flower in motion. Using a simplistic arrangement of circles and a short stem the user's initial reaction is that it is a flower, but after a few moments of gazing at each pedal the flower begins to 'dance'. The peripheral drift illusion that you see in the above applet is made possible due to 4 regions of colors of different luminance (brightness). The direction of the percieved movement depends on the order of the colors in the image. Going from light to medium makes the circles rotate in that direction.

2006-06-01 17:03