A Mixture Distortion Criterion for Halftones

[摘要] Frequency weighted mean squared error (FWMSE) is often used for measuring image quality, in generating halftones, and in considerations of lossy compression of halftones. We construct examples to show the weakness of FWMSE when applied to halftones. Specifically, we show that FWMSE does not directly reflect the uniformity in the spatial distribution of halftone dots. We then propose and examine a mixture distortion criterion that consists of FWMSE and a dot distance term to explicitly account for the spatial arrangement of dots.

[发布机构] HP Development Company

[学科分类] 计算机科学（综合）

[关键词] distortion criterion;distortion measure;frequency weighted mean squared error;digital halftoning