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Que. Given a simple image of size 10 x 10 whose histogram models the symbol probabilities and is given by

P1 P2 P3  P4

a b c d

The first order estimate of image entropy is maximum when
a. a = 0, b = 0, c = 0, d = 1
b. a = 1/2, b =1/2, c=0, d=0
c. a = 1/3, b =1/3, c=1/3, d=0
d. a = 1/4, b =1/4, c=1/4, d=1/4
Answer:a = 1/4, b =1/4, c=1/4, d=1/4
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