Dual energy subtraction for x-ray imaging involves subtracting one image from another after both images have been appropriately scaled as follows: Image3 = a x Image1 - b x Image2 %3D where a= 0.2 and b= 0.3. A pixel in Image1 and Image2 has expected values of 200 and 120, respectively, for the measured photons counts. For that pixel in Image3, compute the: 1) Variance 2) Expected value 3) Relative standard deviation
Dual energy subtraction for x-ray imaging involves subtracting one image from another after both images have been appropriately scaled as follows: Image3 = a x Image1 - b x Image2 %3D where a= 0.2 and b= 0.3. A pixel in Image1 and Image2 has expected values of 200 and 120, respectively, for the measured photons counts. For that pixel in Image3, compute the: 1) Variance 2) Expected value 3) Relative standard deviation
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Transcribed Image Text:Dual energy subtraction for x-ray imaging involves subtracting one image from another after
both images have been appropriately scaled as follows:
Image3 = a x Image1 - bx Image2
%3D
where a= 0.2 and b= 0.3. A pixel in Image1 and Image2 has expected values of 200 and 120,
respectively, for the measured photons counts. For that pixel in Image3, compute the:
1) Variance
2) Expected value
3) Relative standard deviation
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