A new approach for hardcopy reconstruction of volumetric objects of arbitrary shape and material/density characteristics is proposed. It is based on the extension of bi-level or halftoning approximation techniques to 3D signals representing digital volumetric objects of varying material density such as human skeleton hardcopy reconstructions made from a sequence of tomographic slices. Three-dimensional halftoning algorithms are used in conjunction with 3D additive bi-level fabrication techniques such as those used in a stereolithographic apparatus.
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