I have a 3D Image (each pixel contains information for various wavelengths). I draw the image for one wavelength by using
Image[img[[All, All, 100]]] // ImageAdjust
img is my Image.
Now I want to extract the Data in a certain ROI.
I do so by using the mask tool, but when I copy the mask, I get a fullsize image where the selected mask is white (I selected the following three squares):
How to extract the information from
img (fully including the wavelength-dimension) for these regions? I.e. discarding the black areas completely.
ImageMultiply doesnt help me, as this would just make those areas black again and not really discarding them.