Метод объективной оценки искажений мелких деталей в процессе растрирования

Статья. - Опубликована в сборнике IARIGAI, 2008. - No35 - 347-353 c. - Текст англ. Method of objective evaluation the fine Adobe Acrobat документ For objective quantitative measurement of the image fine detail distortion involved by screening the Screening Distortion Factor (SDF) is proposed. It comprises the norm of an error evaluated by superimposing of the original and halftoned resolution pattern bitmaps and counting the normalized sum of microdots, which changed their polarity (from black to white and from white to black) as result of screening. The losses in an image high spatial frequency component are illustrated by plotting the SDF curves via line test pattern frequency for variety of such screening process parameters as screen ruling, screening factor, screen and dot geometry, screening algorithm, etc.