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We presented optimal direct warp algorithms for CREW and EREW PRAMs. 2D warping is important for image processing and graphics. 3D volume rotations are important for scientific visualization of voxel data. The EREW PRAM algorithm is restricted to nonscaling affine transforms, but is more efficient than the CREW algorithm in practice. The parallel run time(More)
[To86] Toussaint, G. T., " An optimal algorithm for computing the relative convex hull of a set of points in a polygon, " [To92a] Toussaint, G. T., " A new look at Euclid's second proposition, " The Mathematical In-telligencer, in press, 1992.s geometrical constructions with a ruler given a fixed circle with its center, " (translated from the German 1833(More)
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