Having spent many tens of pages saying more or less positive things, it becomes necessary to take a look from the other, less optimistic side. Possibly some of the most cogent remarks about the fallibility of some of the concepts we have put forth in this book were made by Brock (1965) in an invited paper before the SPSE. Before I quote from that paper, I should like to point out that Brock was addressing the topic of image quality in very good photography, a level of quality whose resolving power can be measured in hundreds of line pairs per millimeter as opposed to displays whose resolving power is usually measured in hundreds of lines across a major dimension. Brock therefore was talking about spatial frequencies perhaps two orders of magnitude greater than we normally consider for displays.
KeywordsImage Quality Spatial Frequency Modulation Transfer Function Aerial Photography Spectral Power Distribution
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