| http://www.w3.org/ns/prov#value | - It will be presumed that for the performance of the present invention so far as testing is concerned the line scan camera or other scanning means can provide a representation of the scanned document in the form of a multiplicity of picture elements (pixels) each of which has a brightness value (i.e. reflectance, density or other parameter of the pixel) corresponding to an elementary picture area o
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