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I am trying to enhance the contrast in the images I get after scanning a surface using Thermography (Principal Component Thermography ~Rajic, which is basically an application of Principal Component Analysis) to see the defects clearly.
In my case, I have 20 images. And after doing a raster like operation to unroll an image in a column, I get my matrix
A which has 20 columns and each of them represents one image.
Any intuitive explanation will be really appreciated.