| Input: keys , , , , , , , , , , , , , , , , and | | Output: | | //Decompose to red , green , and blue channels | | = (:,:, 1) | | = (:,:, 2) | | = (:,:, 3) | | obtain keys , , , , , , and using equations (1) and (2) | | //modify keys , , and by | | = | | = | | = //Decrypt , , and by , , and | | = ( - (1-) )/ | | = ( - (1-) )/ | | = ( - (1-) )/ | | //Decrypt , , and by considering , , and | | = | | = | | = | | = | | = | | //Obtain original image by concatenating the decrypted channels | | = cat(, , ) | | return |
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