Prescreened illustrations

Do not submit prescreened illustrations, that is, illustrations that were scanned from a print source (which is already screened) or scanned using a screen setting. 

Once o mal interception tiati es are prescreened fOT each node, one ctm formulate syntitesis task as an optimization [n ogram whose objective is to minimize inh on cost subject to the p -diagram equations and the prescreened interception strategies. The following example illustrates this approach. 

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