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Re: How to add 5% possion noise for a image in IDL [message #83995 is a reply to message #83994]

Fri, 12 April 2013 04:33

wlandsman
Messages: 743
Registered: June 2000

Senior Member

On Friday, April 12, 2013 7:29:09 AM UTC-4, wlandsman wrote:

Ooops, found a bug in the code as soon as I posted it. I left out the number of values to compute in RANDOMU

function addpoisson,im, seed = seed
h = histogram(im, min=0, reverse=rr)
newim = im

for i = 0,N_elements(h)-1 do begin
if h[i] NE 0 then begin
sub = rr[rr[i]:rr[i+1]-1] ;Get subscripts
newim[sub] = randomu(seed,N_elements(sub),poisson=i)
endif
endfor

return, newim
end

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[Message index]

		Re: How to add 5% possion noise for a image in IDL By: dplatten on Fri, 12 April 2013 06:40
		Re: How to add 5% possion noise for a image in IDL By: wlandsman on Fri, 12 April 2013 04:33
		Re: How to add 5% possion noise for a image in IDL By: wlandsman on Fri, 12 April 2013 04:29

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