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Dead leaves/Spilled Coins charts are interesting because their statistics resemble those of natural scenes; they are less affected by edge sharpening than other patterns (especially the slanted edge) and hence provide estimates of texture detail that correlate better with perceptual observations. They are also more susceptible to noise reduction, making analysis of random patterns valuable for evaluating the preservation of texture in processed images.
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Wedges
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Wedges, which are analyzed by Imatest’s Wedge and eSFR ISO modules, provide the best visual indication as well as measurement of aliasing. Wedges can be used to calculate
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