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Results tagged with noise
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user 15650
In signal processing noise can be considered random unwanted data without meaning.
1
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1
answer
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What does clipping gaussian noise mean?
I found the subject at here like this "Does clipping noise colour the spectrum"
When I researching for clipping noise. … But he has some different point of view about this.
so I want to know what is the clipping noise and how to undertand the posing about "Does clipping noise colour the spectrum"? …
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0
votes
1
answer
3k
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How to remove gaussian noise and poisson noise?
I want to remove the noise gaussian and poisson noise.
But I'm unfamilier with noise remove methods but from my understanding it's similler to average filter which is median filter. … But I want to know exactly how to remove those kind of noise.
My interest is in image.
And I think that if I make an image with gassian noise +poisson noise then I have to use two remove stages. …
- 651
6
votes
1
answer
13k
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What is the difference between i.i.d noise and white noise? [closed]
White noise means that there are relationship about time dependency.
Actually, I'm not sure whether this is correct or not. Also I want to know what is an i.i.d white noise. … Can you tell me where we find the iid noise in the nature?
update …
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1
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1
answer
21k
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What does standard deviation of noise 1 mean?
In theory of noise,Typically, the standard deviation of noise has 1 and mean has 0.
I think that the reason of noise mean has 0 that we can assume that all noise signal go to zero when we sum it all. … But I can't understand standard deviation of noise has 1 in image noise.
They are always 0~255. There is no negative value.
What does zero-mean noise mean? …
- 651
4
votes
1
answer
15k
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What does zero-mean noise mean?
,
"I think if your noise is zero-mean it doesn't matter, if not it does (you should de-noise first). I'm not entirely sure though so I won't put it in an answer yet."
Q1. … Actually, I want to know what does zero-mean noise mean? and what does it not matter means?
Q2. Why we presume that the noise in Gaussian filter have sigma 1 and mean 0 ? …
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3
votes
1
answer
6k
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How to Estimate the Noise of an Image / Estimation of the Noise in an Image?
I want to know how to estimate the noise of an image?
Also is this represent the camera's noise?
Does anyone know how to estimate the noise of an image or camera? …
- 651
1
vote
1
answer
802
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What Do We Expect Likelihood Function to Be Used For?
In my understanding, I let make a example.
For example, you can see in the following picture.
Consequently, We want to find ^sigma. and We have already known the observation data(which is random …
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