Given a simple image of size $10 \times 10$ whose histogram models the symbol probabilities and is given by
$P_{1}$ |
$P_{2}$ |
$P_{3}$ |
$P_{4}$ |
a |
b |
c |
d |
The first order estimate of image entropy is maximum when
- $a = 0, b = 0, c = 0, d = 1$
- $a=\frac{1}{2}, b=\frac{1}{2}, c=0, d=0$
- $a=\frac{1}{3}, b=\frac{1}{3}, c=\frac{1}{3}, d=0$
- $a=\frac{1}{4}, b=\frac{1}{4}, c=\frac{1}{4}, d=\frac{1}{4}$