Question

(c) Scaling in image subtraction: (i)Two image of a gray level scale [0, 127] were subtracted...

(c) Scaling in image subtraction: (i)Two image of a gray level scale [0, 127] were subtracted from each other. What is the minimum and maximum range of the resulting image? (ii) how can you scale the result of part (i) to fit the original range of [0,127]. (iii) Suppose that the range of the resulting difference image was [-50, 100], what would be a better scaling method?

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