Michael R. Scheessele

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Brunelleschi (1413) was the first to demonstrate that a 3D scene can be represented by a 2D perspective picture in such a way that retinal images produced by the scene and the picture are identical (subsequently, Leonardo pointed out that this is true only when the observer's eye is placed at the center of perspectivity that was used to produce this(More)
In a retinal image, contours belonging to a figure of interest may be intermixed with other contours (caused by occlusion, camouflage, low contrast, etc.), making difficult the identification of figure contours and thus the figure itself. In psychophysical experiments, we found that identification of a figure is facilitated by: differences in relative(More)
Assigning the development of a poker-playing agent as a group project allows flexibility with respect to the topics and techniques typically covered in an introductory Artificial Intelligence course. A poker agent project also provides students the experience of 'authentic' AI research, due to the status of poker as an 'unsolved' problem in AI. Despite this(More)
The two-stage model of amodal completion or TSM (Sekuler & Palmer, 1992), and the ambiguity theory (Rauschenberger, Peterson, Mosca, & Bruno, 2004) provide conflicting accounts of the phenomenon of amodal completion in 2-D images. TSM claims that an initial mosaic (2-D) representation gives way to a later amodally completed (3-D) representation.(More)
The thesis presents an effort at developing a robust, interactive framework for rendering 3-D fire in real-time in a production environment. Many techniques of rendering fire in non real-time exist and are constantly employed by the movie industry. Many of the systems developed for rendering fire in offline mode directly influenced and inspired real-time(More)
When a figure is only partially visible and its contours represent a small fraction of total image contours (as when there is much background clutter), a fast contour classification mechanism may filter non-figure contours in order to restrict the size of the input to subsequent contour grouping mechanisms. The results of two psychophysical experiments(More)
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