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Noise calculation in IDL
| Noise calculation in IDL [message #71078] |
Thu, 27 May 2010 19:43 |
Suguru Amakubo
Messages: 24
Registered: March 2010
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Junior Member |
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Dear all
I am currently working on a new noise reduction method of a 400x400
image. I have successfully programmed the codes in IDL to execute the
above. However when it came down to measuring the noise and
demonstrating the improvements. My lack of experience in dealing with
signal noise made me struggle. Please explain to me how/what:
1)to display noise + signal graphically in IDL (I heard the use of
histograms will help but not sure what this means)
2)the concept of adding white noise to the current signal in order to
reduce the overall noise is and how to do this in IDL
3)equations I should use when adding/subtracting the noise from the
signal
also if there are any webpages or books that explains the concept of
signal noise please reply a link.
I am sorry if this is a bit off topic but since IDL is popular amongst
astronomers who works with images frequently and I have written the
code in IDL I thought I can get the most suitable help here.
I am sorry if any of the above is trivial matter to you I just
couldn't find much help on the web so far.
Thank you for your help
Suguru
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