MATLAB: RGB range for an image

image processingImage Processing Toolbox

Does the R,G,B range varies for the image taken with different cameras. Suppose I capture an image with blackberry and I capture the same image with a digital camera; would the RGB range vary for the image in both scenarios or would it be the same.

Best Answer

Of course it does. Different cameras have different spectral responisivities, different exposures, different gammas, different algorithms they apply to "improve" the image for you, etc. Don't think that if you take a photo of, say, the x-rite Color Checker Chart (a standard color calibration target), that you will get the nominal sRGB values out. You most certainly will not. Not from your camera or any other camera. You'd need to do a color calibration to post process the image if the sRGB image is what you wanted because all cameras are different.
Additional Training:
http://www.cis.rit.edu/mcsl/SSC
x-rite
http://www.drycreekphoto.com/index.html
http://www.poynton.com/
http://www.cambridgeincolour.com/tutorials.htm
http://www.dpreview.com/articles
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