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I need help with this image processing problem?

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payman khayree
payman khayree 2015-5-7
评论： payman khayree 2015-5-12
I have been working with a series of images taken by an invasive recording technique. One of problems with these frames is that the lines (rows) in the image are misaligned, due to some inevitable artifacts in the recording set up. I wrote a function that fixes the misalignments by maximizing the correlation between the adjacent lines. The function works well but there is one problem.It does not work so well on the first and last rows. As you see in the image, the corners contain only zeros ( because I segmented the main bundle from the background )
The function works almost perfect in the middle rows, but in the upper and lower section of the image, it does not work well and even sometimes the alignment gets worse.
so here are my questions:
1) what is the reason? is it because of those areas of zeros that affect the correlation?
2) how can I get over this problem?
thank you all

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Image Analyst
Image Analyst 2015-5-7
Maybe try imregister() instead of normxcorr2(). I think it should work on "images" that are a single line.
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Image Analyst
Image Analyst 2015-5-11
Why is one line shorter? Why not just take the whole lines and put them both into imregister() or normxcorr2()?
payman khayree
payman khayree 2015-5-12
I used normxcorr2 and result got a little bit better. It is also faster now. thanks a lot for your helps and suggestions.

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