The underlying principle of our technique is based on a simple observation: the shadow cast by an object depends not only on the object itself, but also on the light; therefore the same object under changing lighting conditions can totally change its appearance. - Drzach/Suchy

THE MARILYN SERIES 1

Marilyn 1 - EVENING LIGHT SOURCE

Marilyn 2-MORNING LIGHT SOURCE

Shadow Casting Panels (SCP) is a novel technique for storing and presenting multiple images using one physical object, so that separate images become visible under varying illumination. It was invented by Drzach in 2004 (patent pending), and then developed further by Drzach & Suchy.

POP E CULTURE SERIES 2

POP-E Culture MORNING VIEW

POP-E Culture EVENING VIEW

HOW IT WORKS

To complete the panel, we need to design the building blocks with corresponding properties, i.e. blocks which either cast shadow (black pixel) or cast no shadow (white pixel), depending on the direction of the external illumination. An example design of such blocks is presented in the figure below.- Drzach & Suchy

The basic principle outlined above applies naturally also for encoding more than two images in a single panel, but then more types of building blocks of more complicated shapes are needed. In particular, for three black-and-white images we need eight building blocks, to cover all eight possible states of a pixel in all three images.

Moderne Series 3

Moderne EVENING VIEW

Moderne MORNING VIEW

Point of View Series 4

Point of View EVENING VIEW

Point of View MORNING VIEW

Posted by Ana Roman for PhotoSynth Mag