White Noise in A Spatial Context
While it is usually applied in the context of frequency domain signals, the term white noise is also commonly applied to a noise signal in the spatial domain. In this case, it has an auto correlation which can be represented by a delta function over the relevant space dimensions. The signal is then "white" in the spatial frequency domain (this is equally true for signals in the angular frequency domain, e.g., the distribution of a signal across all angles in the night sky).
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Famous quotes containing the words white, noise and/or context:
“Other men wear white suits in summer and it doesn’t seem to bother them. But my white suit seems to be a little whiter than theirs. I think also that it may have something written on the back of it, although I can’t find it when I take the suit off.”
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—Stanley I. Greenspan (20th century)