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How to create white noise in IDL? [message #93055 is a reply to message #93053]

Sat, 16 April 2016 07:48

Helder Marchetto
Messages: 520
Registered: November 2011

Senior Member

From wiki:
In digital image processing, the pixels of a white noise image are typically arranged in a rectangular grid, and are assumed to be independent random variables with uniform probability distribution over some interval

I guess that randomu (the "u" stands for uniform) is what you need. In case you're not sure, you can look at the statistics using something like:
p = plot(histogram(randomu(100000)))
Just for the fun of it.

Cheers, Helder

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[Message index]

		How to create white noise in IDL? By: Sonu Tabitha on Sat, 16 April 2016 02:51
		How to create white noise in IDL? By: Helder Marchetto on Sat, 16 April 2016 07:48
		How to create white noise in IDL? By: Helder Marchetto on Sat, 16 April 2016 12:09
		How to create white noise in IDL? By: Helder Marchetto on Sat, 16 April 2016 12:09
		Re: How to create white noise in IDL? By: Craig Markwardt on Sat, 16 April 2016 15:21

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