By Stephen R., and Kaiser, Mary K., and Grunwald, Arthur C. Ellis
In keeping with the convention on Spatial monitors and Spatial tools held on the Asilomar convention heart in 1987, this paintings specializes in the geometry of pictorial images for pcs and the instruments with which to regulate them.
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Additional info for Pictorial communication in virtual and real environments
Example text
While this second part is clearly important and can contribute in a major way to the success of a picture, it is not central to the following discussion. Though the rendering of the image can help establish the virtual or illusory space that the picture depicts and can literally make the subject matter reach out of the picture plane, it is not the primary Pictorial communication in virtual and real environments 26 influence on the definition of this virtual space. Shaping and placement are. These elements reflect the underlying geometry used to create the image and determine how the image is to be rendered.
The A is assumed to have been placed atop the surrounding surface, as opposed to having been cut out of it. This assumption may be in error. The inclusion of additional cues, such as shading, perspective, or solid modeling, will further constrain depth-order interpretations. However, so long as the viewer cannot obtain multiple perspectives on the objects depicted, the display remains inherently ambiguous. Again, the Ames demonstrations serve to show that observers can always be made to have erroneous perceptions whenever they are constrained to view an object from a unique perspective.
Symbols, nevertheless, have from the very beginning found their way into many pictures, and we now must live with both the symbolic and geometric aspects of pictorial communication. Furthermore, focusing on the symbolic content has the useful Pictorial communication in virtual and real environments 24 effect of reminding the viewer of the essentially duplicitous nature of a picture since, though it inherently represents an Figure 2. Woodcut by Dürer illustrating how to plot lines of sight with string in order to make a correct perspective projective.
