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

s = cr¬¨‚àë¬¨¬µ‚àö¬™, c and ¬¨‚àë¬¨¬µ‚àö¬™ are positive constants

s = L ‚Äö√Ñ√∂‚àö√ë‚àö¬® 1 ‚Äö√Ñ√∂‚àö√ë‚àö¬® r

s = c log (1 + r), c is a constant and r ‚Äö√Ñ√∂‚àö¬¢‚Äö√Ñ¬¢ 0

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

1.	If r be the gray-level of image before processing and s after processing then which expression defines the negative transformation, for the gray-level in the range [0, L-1]?
A.	s = L ‚Äö√Ñ√∂‚àö√ë‚àö¬® 1 ‚Äö√Ñ√∂‚àö√ë‚àö¬® r
B.	s = cr¬¨‚àë¬¨¬µ‚àö¬™, c and ¬¨‚àë¬¨¬µ‚àö¬™ are positive constants
C.	s = c log (1 + r), c is a constant and r ‚Äö√Ñ√∂‚àö¬¢‚Äö√Ñ¬¢ 0
D.	none of the mentioned
Answer» B. s = cr¬¨‚àë¬¨¬µ‚àö¬™, c and ¬¨‚àë¬¨¬µ‚àö¬™ are positive constants

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

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