If r be the gray-level of image before processing and s after processing then which expression defines the power-law transformation, for the gray-level in the range [0, L-1]?

s = c log (1 + r), c is a constant and r ≥ 0

s = crᵞ, c and ᵞ are positive constants

s = c log (1 + r), c is a constant and r ≥ 0

If r be the gray-level of image before processing and s after process

1.	If r be the gray-level of image before processing and s after processing then which expression defines the power-law transformation, for the gray-level in the range [0, L-1]?
A.	s = L – 1 – r
B.	s = crᵞ, c and ᵞ are positive constants
C.	s = c log (1 + r), c is a constant and r ≥ 0
D.	none of the mentioned
Answer» C. s = c log (1 + r), c is a constant and r ≥ 0

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If r be the gray-level of image before processing and s after processing then which expression defines the power-law transformation, for the gray-level in the range [0, L-1]?

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