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NPCR and UACI measurements with statistical tests

version 1.0 (3.84 KB) by

Randomness measure of 'number of pixel changing rate' and 'unified average changed intensity'



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This single m file implements the randomness measure of NPCR and UACI, and produces the classic quantitative scores and the new qualitative randomness test p-Vals.

Comments and Ratings (3)

Amal Maryoosh


faiz (view profile)

can any one tell me what is the maximum peak value experimentally we can achieve?0.34 or greater than this even 0.5,0.6?and higher value is better or lower for UACI score?

is the quantitative scores must be <=1 ??

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MATLAB 8.1 (R2013a)

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