From: Detection of shifted double JPEG compression by an adaptive DCT coefficient model
QF1 | QF2 | ||||
---|---|---|---|---|---|
 | 50 | 60 | 70 | 80 | 90 |
50 | 53.24/58.51/59.75 | 56.39/66.82/64.12 | 65.63/78.59/71.01 | 75.82/89.20/86.18 | 84.39/94.19/93.59 |
52.84/72.78 | 57.54/86.17 | 67.88/95.66 | 77.05/98.54 | 86.72/99.81 | |
60 | 50.91/53.52/52.40 | 55.02/60.36/57.57 | 58.23/65.21/63.58 | 67.78/78.18/71.37 | 80.62/89.98/88.14 |
50.08/60.94 | 54.81/81.80 | 60.39/84.75 | 69.72/98.00 | 81.64/99.78 | |
70 | 50.81/51.82/49.92 | 50.68/53.94/52.15 | 52.14/57.31/57.99 | 59.04/68.23/69.21 | 74.18/84.12/82.61 |
49.97/50.13 | 50.00/59.53 | 53.63/75.09 | 61.30/97.45 | 75.50/98.82 | |
80 | 49.62/51.80/51.42 | 49.39/50.88/49.50 | 50.04/50.48/50.31 | 53.55/58.32/59.16 | 64.82/72.41/71.58 |
50.53/50.47 | 49.38/50.17 | 50.71/60.92 | 52.89/77.11 | 64.57/96.87 | |
90 | 49.99/50.38/50.42 | 50.72/50.56/49.39 | 50.02/50.24/49.78 | 50.03/52.93/51.13 | 54.39/54.27/53.67 |
 | 50.26/49.34 | 50.99/50.27 | 49.67/51.16 | 49.66/60.97 | 54.85/75.09 |