User Perceptions and Point of View in Technical Illustrations 
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.
Krull, Robert, Debopriyo Roy, Shreyas D'Souza and Marilyn Morgan. STC Proceedings (2003). Design>Documentation>Technical Illustration