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Image comparison

Posted 12 years ago

Hi everybody, I am developing a point-of-care sensor device and I need to use a software to calibrate the data and to analyse the results. For example, I have a 2D patter of experimental points of a complex mixture of proteins/peptides. It is the control pattern (Image 1). Now I need to compare other pattern of proteins obtained in a second experiment (Image 2) with the previous one, to find all possible matchs according to maximun number of black points (proteins) overlapped. I need information about % of overlapping and overlapped figures (see attached figure). Can I use Mathematica for this purpose? Thanks

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POSTED BY: rvillalonga
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David, I am guessing that this is not a problem of correlating specific points on a grid but rather actual rectangular areas on an image. If it is just data points on a regular cartesian grid then your approach makes a lot of sense. (Wish I had thought of it... ;-)) If it's rectangular areas on an image then perhaps something involving ImageCorrelate might be of help (though Mathematica's image processing functions are something that I need to learn more about.....)

POSTED BY: David Reiss
Posted 12 years ago

A 2D ListCorrelate should do this, with image1 the list and image2 the kernel. The output will have peaks where elements of the kernel match those in the list. The magnitude of the peaks indicates the degree of correlation at that displacement.

Can you post sample data?

POSTED BY: David Keith
POSTED BY: David Reiss
Posted 12 years ago
POSTED BY: Douglas Kubler
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