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Vol. 48 (2007) No. 4 November n. 156


Visual Perception and Free-Form Structure: From Image Parameters to Perceptual Cues for Optimal Design

< Table of Contents for Vol. 48 (2007) No. 4 November n. 156
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 48 (2007) No. 4 November n. 156
  • Pages: 23-28
  • Title: Visual Perception and Free-Form Structure: From Image Parameters to Perceptual Cues for Optimal Design
  • Author(s): R. Motro; Ch. Silvestri; B. Maurin, B. Dresp-Langley
  • Keywords: free-form conceptual design, image parameters, visual perception
Abstract
Free-form conceptual design implies the necessity for effective communication between human agents involved in the design project and its subsequent realization. Two-dimensional images play an important role in this communication, especially at the earlier stages of design. The two-dimensional image is ambiguous by nature and needs to be interpreted to retrieve a coherent interpretation of the design object. This process of ‘morphology reconstruction’ on the basis of 2-D image parameters relies on specific brain mechanisms which exploit perceptual cues, such as transparency, occlusion, contrast, or spatial interposition. 3-D viewing of virtual models aids morphology reconstruction when specific structural relations are to be retrieved through perception, as shown by results from recent studies in our group. When object properties based on purely local geometry are to be retrieved, 3-D viewing may be detrimental to morphology reconstruction

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