“Spatially Augmented Depth and Transparency in Paper Materials”
Conference:
Experience Type(s):
Title:
- Spatially Augmented Depth and Transparency in Paper Materials
Organizer(s)/Presenter(s):
Description:
The purpose of this installation is to demonstrate novel perceptual effects in which the compelling illusion of depth and transparency for paper materials is induced by the conventional light projection of cast shadow patterns. The audience can interactively enjoy experiences wherein objects and letters on a paper perceptually float up.
The human visual system uses cast shadows to judge the three-dimensional layout of an object. The purpose of this installation is to demonstrate novel visual illusions of depth and transparency for paper materials, which is induced by the conventional light projection of cast shadow patterns. Thus, this installation focuses on perceptual rather than technical aspects. Illuminating a target object, the spatial vicinity of the object is darkened to produce the visual impression of a shadow of the object. By controlling the blurriness of the cast shadow and/or spatial distance between the object and its shadow, a perceptual change in the layout of the object is induced. The audience can interactively enjoy visual experiences wherein objects and letters on a paper perceptually float in the air. We also demonstrate that it is possible to edit the material appearance of a real object by manipulating the shape of the shadow; an opaque colored paper appear to be a transparent color film floating in the air.
References:
[1]
Junho Choi, Jong Hun Lee, Yong Yi Lee, Yong Hwi Kim, Bilal Ahmed, Moon Gu Son, Min Ho Joo, and Kwan H. Lee. 2016. Realistic 3D Projection Mapping Using Polynomial Texture Maps. In ACM SIGGRAPH 2016 Posters (SIGGRAPH ’16). ACM, New York, NY, USA, 64:1–64:2.
[2]
Daniel Kersten, David C. Knill, Pascal Mamassian, and Isabella BÃijlthoff. 1996. Illusory motion from shadows. Nature 379, 6560 (Jan. 1996), 31–31.
[3]
Ramesh Raskar, Greg Welch, Kok-Lim Low, and Deepak Bandyopadhyay. 2001. Shader Lamps: Animating Real Objects With Image-Based Illumination. In Rendering Techniques 2001, W. Hansmann, W. Purgathofer, F. Sillion, Steven J. Gortler, and Karol Myszkowski (Eds.). Springer Vienna, Vienna, 89–102.
