Processing for this digigram of Prof. Norbert Weiner involves correcting the Gamma curve of the film to the “Gamma” of the shaded number set for plotting. A histogram of the scanned numbers (NS) is compounded and the Low (L) and High (H) ends of the distributions are detected. The number plotted (NP) is calculated in one version as follows : NP(I,J) = NS(I,J) * (99/H-L). The computer can easily simulate unnatural Gamma curves that no photographer’s chemicals can implement.

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