How to calculate the slope of each pixel?

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Hana
Hana 2014-10-27
Suppose I have to tiff files Tb and sv. I can find out slope through y=ax+b by plotting Tb on y axis and sv on x axis. But I need to calculate the slope for each pixelsof Tb and sv.How to do it?
Tb = imread('Tb.tif'); sv = imread('Norm.tif');

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