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- Klimmek, B., Prautzsch, H. & Vahrenkamp, N. Computing (2007) 79: 325. doi:10.1007/s00607-006-0209-8
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Any two objects A and B can be viewed as two different projections of their Cartesian product A×B. Rotating and projecting A×B results in a continuous transformation of A into B. During certain rotations, the contour of the Cartesian product remains the same although its projection changes. Based on these properties, we derive a fast and simple morphing algorithm without topological constraints on either object.