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Accurate color reproduction is important in many applications of 3D printing,from design prototypes to 3D color copies or portraits. Although full color isavailable via other technologies, multi-jet printers have greater potential forgraphical 3D printing, in terms of reproducing complex appearance properties.However, to date these printers cannot produce full color, and doing so posessubstantial technical challenges, from the shear amount of data to thetranslucency of the available color materials. In this paper, we propose anerror diffusion halftoning approach to achieve full color with multi-jetprinters, which operates on multiple isosurfaces or layers within the object.We propose a novel traversal algorithm for voxel surfaces, which allows thetransfer of existing error diffusion algorithms from 2D printing. The resultingprints faithfully reproduce colors, color gradients and fine-scale details.

Pushing the Limits of 3D Color Printing: Error Diffusion with Translucent Materials