how to find the difference between fire and sun rays bcoz , both contains red and yellow color.How to find the pixel intensities between those two.
MATLAB: How to find the difference between fire and sun rays bcoz , both contains red and yellow color
digital image processingspectrum
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Perhaps you need to look in the right part of the spectrum. You could investigate multispectral imaging, like the megavision camera ( http://www.mega-vision.com/ ). Or you could ask your friendly neighborhood spectroscopist to get you the spectrum of the dirt and the roots and pick a wavelength range that maximizes the difference. Then use a monochrome camera with a band pass optical filter in front of the lens. It's always better to get a good photo to begin with than to try to do it with software later.
You'd need a thermal camera for that. They operate around 8000-12000 nm whereas visible light cameras use radiation in the range of 400-700 nm. You can't do it with a visible light camera. Fortunately you can get fairly cheap thermal cameras, like the FLIR One that snaps onto your iPhone or Samsung Android phone.
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