The transformation T (rk) = ∑^k(j=0) nj /n, k = 0, 1, 2, …, L-1, where L is max gray value possible and r-k is the kth gray level, is called _______
(a) Histogram linearization
(b) Histogram equalization
(c) All of the mentioned
(d) None of the mentioned
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Question is from Histogram Equalization and Processing in portion Image Enhancement of Digital Image Processing