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Poisson noise generator [message #460]

Thu, 30 July 1992 07:13

murtagh
Messages: 1
Registered: July 1992

Junior Member

Hi IDLers,

I am looking for a Poisson noise generator that takes a 1D or 2D array as
input and returns a noisified version of it according to the Poisson
distribution. (The input is taken as defining the mean at every pixel.)

I am surely not the first one to consider this problem. Is there
a ready-to-use IDL-routine out there that I could pull over?

If I get more than one reply, I'll summarize.

Since I am not regularly reading this bulletin board I would appreciate
answers to be mailed to adorf@eso.org on the Internet.

Thanks.

Hans-Martin Adorf
Space Telescope - European Coordinating Facility
Garching, FRG

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Re: Poisson Noise [message #75480 is a reply to message #460]

Fri, 11 March 2011 17:29

wlandsman
Messages: 743
Registered: June 2000

Senior Member

I think poidev.pro ( http://idlastro.gsfc.nasa.gov/ftp/pro/math/poidev.pro ) will work.

IDL> imnoise = POIDEV( im)

One could also do this using a combination of the /POISSON keyword to randomn and the /reverse_indices keyword to HISTOGRAM. --Wayne

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