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Glenn Biegon
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Journal Articles
Publisher: Journals Gateway
Leonardo (2005) 38 (3): 245–253.
Published: 01 June 2005
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Perspective inversion reverses the flow of naturalistic pictorial space, creating a disorienting, anti-naturalistic sense of space. Inverted perspective's subversive power appears limited, however, given that no art-historical examples depict fully inverted objects in systematically inverted “unlimited spaces,” such as landscapes. The author addresses this limitation through analysis of “converse” and “pseudoscopic” 3D images—Charles Wheat-stone's two paradigms for inverting binocular depth. Wheatstone's inverted imagery proves geometrically identical to 3D art-historical precedents that conceal their perspective inversion: namely, relief sculpture, set design and architecture employing three-dimensionally “forced” perspective. As hinted by depth-inverted stereograms, linear perspective employed together with reversed overlapping cues systematically inverts unlimited space in both 2D and 3D pictures.
Journal Articles
Publisher: Journals Gateway
Leonardo (2005) 38 (2): 93–100.
Published: 01 April 2005
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Two accelerated-relief sculp-tures depicting the same scene from slightly different viewpoints can serve as sculpted stereo-scopic half-images—or “twin-reliefs.” Unlike traditional relief sculpture, which compresses sculptural space, twin-reliefs expand it, creating lifelike illusionistic depths. Viewed binocularly in a large Wheat-stone stereoscope, the twin-relief's virtual world appears colorful, atmospheric and life-size— even infinitely deep. Furthermore, unlike flat-picture stereoscopy, which allows just one undistorted, perspectively robust view, twin-reliefs provide infinitely many such views because, being sculptural, they “adapt” to the observer's movement. Twin-reliefs syner-gistically combine essential physical attributes previously separated between the domains of painting, sculpture and traditional flat-picture stereoscopy.