WHAT_IS_THE_FULL_FORM_FOR_PDF,_A_FUNDAMENTAL_DESCRIPTOR_OF_RANDOM_VARIABLES_I.E._GRAY_VALUES_IN_AN_IMAGE??$

WHAT_IS_THE_FULL_FORM_FOR_PDF,_A_FUNDAMENTAL_DESCRIPTOR_OF_RANDOM_VARI

1.	WHAT_IS_THE_FULL_FORM_FOR_PDF,_A_FUNDAMENTAL_DESCRIPTOR_OF_RANDOM_VARIABLES_I.E._GRAY_VALUES_IN_AN_IMAGE??$
A.	Pixel distribution function
B.	Portable document format
C.	Pel deriving function
D.	Probability density function
Answer» E.

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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 _______
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WHAT_IS_THE_FULL_FORM_FOR_PDF,_A_FUNDAMENTAL_DESCRIPTOR_OF_RANDOM_VARIABLES_I.E._GRAY_VALUES_IN_AN_IMAGE??$

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