Change mean and std deviation

2015 10 3
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更新时间：2015 10 3
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Hi,
I would like to transform the grey on an image to a given value of mean and std deviation, in order that the value of the pixels will be the same and when I make a superposition (mosaic) of the images the border between the two is almost indistinguible. Could anyone help me? Thanks a lot in advance!

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Image Analyst
Image Analyst 2015-10-3

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Auryn_
Auryn_ 2015-10-3
Hi,
thanks for the answer. Unfortunately, it doesn´t help. I have already calculated the mean and standard deviation of the point in image 1. Now I want to make the mosaic with Image 2, where the point has to be transform to the value calculated in Image 1. How can I change the value (mean and std) on picture 2?
Image Analyst
Image Analyst 2015-10-3
If you don't want to seamlessly stitch the images side-by-side, and all you want to do is to make the images have the same mean and std, then just use simple algebra. It's a very simple, trivial formula that I'm sure you can guess. Let me know if you need it.
Otherwise you can match the histograms using imhistmatch().
Image Analyst
Image Analyst 2015-10-3
Moved here from a brand new Question (now deleted) he started:
Hi,
I have 2 images with different mean grey values. How can I change these values to the average value of both images? Thank you!
Image Analyst
Image Analyst 2015-10-3
OK, if you don't want to use imhistmatch() and can't figure out the formula, and now just want to have the same mean and don't care about the standard deviation, here it is:
mean1 = mean(image1(:));
mean2 = mean(image2(:));
newImage2 = double(image1) - mean1 + mean2;

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Auryn_
Auryn_
2015-10-3

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Image Analyst
Image Analyst
2015-10-3

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