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Table 1 Scramble the DCT coefficient

From: Fragile watermarking based on incomplete cryptography for copyright protection

DCT coefficient S l (i,j) lo g 2 S l (i,j) Scrambled S l′(i,j)
1******* 7 1eeeeeee
01****** 6 01eeeeee
001***** 5 001eeeee
0001**** 4 0001eeee
00001*** 3 00001eee
000001** 2 000001ee
0000001* 1 0000001e