Study Group on Visual Illusions and Effects (VIE) (1993-2014)

Chair: Osvaldo da Pos (Italy)

The VIE study group was active from 1993 until the end of 2014.

The purpose was to stimulate a general discussion about: 1) the scientific relevance of the various visual effects discovered and studied; 2) the relationship between psychology, neurophysiology and physics in the intepretation of the "real" and "illusory" (or "virtual") world.

Study Group on Color Order Systems (COS) (1978-1990?)

Chairpersons: 

• 1987-1990 - Nick Hale (USA)
• 1986-1987 - C. James Bartleson (USA)
• 1984-1985 - Fred Wallace Billmeyer, Jr. (USA)
• 1978-1983 - Günter Wyszecki (Canada) 

The study group on Color Order Systems was active from 1978 until 1990, approximately (the exact date of its ending is uncertain).

The aims were: 1) to compile an annotated bibliography on color order systems, 2) to identify applications of color order systems.