User Perceptions and Point of View in Technical Illustrations
http://www.stc.org/ConfProceed/2003/PDFs/STC50-052.pdf

Krull, Robert, Debopriyo Roy, Shreyas D'Souza and Marilyn Morgan
STC Proceedings
2003

Abstract:

Test subjects were asked to match body images shown from varying points of view. Their preference was for images that placed critical distances across the display plane; their error patterns suggest that several variables interact to affect the accuracy of perceiving body positions in illustrations.