| 摘要 |
Disclosed are apparatus and methods for implementing polar halftone techniques that substantially reduce or eliminate interference patterns while printing on rotating circular media with a radial print system. In one embodiment, Cartesian image pixels are selected such that screen pixels or "dots" are arranged fan-shaped along radii (or "spokes") and in annular ring segments (or "arcs"). Halftone sampling frequency may be varied along spokes and arcs or along a polynomial curve relative to the center of spinning media, in order to reduce distortion and artifacts.
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