Correlation analysis of images

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Dhivya
Dhivya 2013 年 10 月 9 日
I have a plain image (eg. Lena) and its encrypted one.. I have to randomly select 2000 pairs of adjacent pixels from the plain image and encrypted image,and draw the distribution diagram of two horizontally, vertically, and diagonally adjacent pixels of the plain image and the encrypted image.. Can anyone help me out???

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