Pixel independence: measuring spatial interactions on a CRT display

Author: Pelli, Denis G.1

Source: Spatial Vision, Volume 10, Number 4, 1997 , pp. 443-446(4)

Publisher: VSP, an imprint of Brill

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Abstract:

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.

Document Type: Research article

DOI: 10.1163/156856897X00375

Affiliations: 1: Department of Psychology, New York University, 6 Washington Place, New York, NY 10003, USA

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