Stroboscopic Easter Eggs

SUBHEAD: As part of the celebration of spring we present these painted animated Easter egg designs.

By Rob Beschizza on 25 March 2018 for Boing Boing-
(https://boingboing.net/2018/03/25/mesmerising-stroboscopic-easte.html)


Image above: Eggbot inking a boiled egg with stroboscopic pattern on an Easter that appears animated by video frames. Still shot from video below.

"No computer graphics tricks were used in this video," writes Jiri Zemanek of Czech Technical University in Prague.

Various patterns are generated in MATLAB using mathematical equations similar to ones describing Spirograph (or harmonograph) and Phyllotaxis. The patterns are calculated in such a way that when rotated under a stroboscopic light of suitable frequency or when recorded by a camera, they start to animate. It is kind of zoetrope---early device for animation. Eggs were painted using EggBot (designed by Bruce Shapiro as open hardware and available as a kit from http://www.evilmadscientist.com/). To draw on eggs, we used standard permanent markers and an electro kistka with bee wax followed by dying. Eggs are rotated at a constant speed, special for each pattern, by a brushless motor.

Video above: "Eggstatic - Stroboscopic Pen Patterns for Easter Eggs". From (https://youtu.be/JfajQ4_hSN0)
aic paint".

Here's more: "This apparatus creates stroboscopic patterns on an egg covered in photochromic paint"


Video above: "Eggstatic 2 - Laser Drawing Stroboscopic Patterns on Eggs". From (https://youtu.be/rIgpqlrj-G0)

.