<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">F. Phillips</style></author><author><style face="normal" font="default" size="100%">C. Thompson</style></author><author><style face="normal" font="default" size="100%">M. Voshell</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Effects of 3- {D} complexity on the perception of 2- {D} depictions of objects</style></title><secondary-title><style face="normal" font="default" size="100%">Perception</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2003</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.perceptionweb.com/cgi-bin/pion/perdisp.pl?query=/perception//perabs//p33//p5099.htmlVoshell</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">In a recent study and Pelli (1999 Science 285 844 - 846) performed a set of perceptual experiments using portrait paintings by Chuck Close. Close's work is similar to the 'Lincoln' portraits of Harmon and Julesz (1973 Science180 1194 - 1197) in that they are composite images consisting of coarsely sampled and individually painted and mostly homogeneous cells. Pelli showed that perceived shape was dependent on size and refuting findings that perception of this type is scale-invariant. In an attempt to broaden this finding we designed a series of experiments to investigate the interaction of 2-D scale and 3-D structure on our perception of 3-D shape. We present a series of experiments where field of view and 3-D object complexity and 2-D image resolution and viewing orientation and and subject matter of the stimulus are manipulated. On each trial and observers indicated if the depicted objects appeared to be 2-D or 3-D. Results for face stimuli are similar to Pelli's and while more geometrically complex stimuli show a further interaction of the 3-D information with distance and image information. Complex objects need more image information to be seen as 3-D when close, however and as they are moved further away from the observer and there is a bias for seeing them as 3-D objects rather than 2-D images. Finally and image orientation and relative to the observer and shows little effect and suggesting the participation of higher-level processes in the determination of the 'solidness' of the depicted object. Thus and we show that the critical image resolution depends systematically on the geometric complexity of the object depicted.</style></abstract></record></records></xml>