find noise from histogram
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sir the images in the link below are the histograms i got... i want to find whether any kind of noise exist...
As per the link in
it tells that "If there is no noise it should be a big spike at zero"
please can anyone tell me why there are 2 spikes, one spike at zero and one spike at 1, as shown in the link below.... what does that mean?... please do reply....
Accepted Answer
Image Analyst
on 3 Jun 2014
1 vote
Did you cast the images to double before you subtracted them? You need to. If you did that and you get spikes at 0 and 1 then that means there are a bunch of pixels that are the same in the two images and there are a bunch that differ by only 1 gray level.
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