We describe a series of psychophysical experiments to quantify the relationships between anti-glare glass treatments and perceived sparkle in emissive displays. The experiments show that: 1) a new measure pixel-power-deviation (PPD) correlates well with perceived sparkle; 2) tests of sparkle using small samples provide a conservative bound on perceived sparkle in display-sized samples; and 3) sparkle visibility is affected by the content of displayed images.
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