| http://www.w3.org/ns/prov#value | - However, an inputting unit such as a scanner does not have ambiguous perception like that of human beings, and does not necessarily perceive the gray scale similarly before and after the halftone processing. [0216] That is, the scanner does not recognize by itself whether the gray scale expressed by the area gray scale really has gray scale information expressed by the gray-level gray scale. [0217
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