Pixel independence: measuring spatial interactions on a CRT display.
The standard working assumption of careful CRT imaging is that each pixel is imaged independently, through a point nonlinearity (the monitor's gamma function, relating screen luminance to input voltage), and then blurred by the point-spread function of the beam spot on the phosphor. Unfortunately most monitors have inadequate video bandwidth, DC restoration, and high-voltage regulation to live up to this ideal model. Two tests are recommended for assessing a CRT's deviation from the pixel-independence model.
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Department of Psychology, New York University, NY 10003, USA. denis@psych.nyu.edu
D016288:Computer Terminals; D003626:Data Display; D006801:Humans; D010364:Pattern Recognition, Visual; D011601:Psychophysics; D012984:Software