Table 2 Detection accuracy of the double compressed video fragments from its corresponding single compressed ones using TU-I, TU-P, and TU features on QCIF video dataset
From: HEVC double compression detection under different bitrates based on TU partition type
B1 − B2 (Kbps) | 100–200 | 100–300 | 100–400 | 200–300 | 200–400 | 300–400 |
|---|---|---|---|---|---|---|
TU-I(5D) | ||||||
 MEAN | 0.84 | 0.92 | 0.90 | 0.70 | 0.71 | 0.72 |
 STDEV | 0.10 | 0.07 | 0.07 | 0.10 | 0.09 | 0.09 |
 MED | 0.83 | 0.92 | 0.92 | 0.67 | 0.71 | 0.71 |
 MAD | 0.08 | 0.08 | 0.08 | 0.08 | 0.04 | 0.04 |
TU-P(5D) | ||||||
 MEAN | 0.92 | 0.96 | 0.96 | 0.81 | 0.76 | 0.63 |
 STDEV | 0.06 | 0.05 | 0.06 | 0.10 | 0.09 | 0.11 |
 MED | 0.92 | 1.00 | 1.00 | 0.83 | 0.75 | 0.67 |
 MAD | 0.00 | 0.00 | 0.00 | 0.08 | 0.08 | 0.08 |
TU-IP(10D) | ||||||
 MEAN | 0.93 | 0.97 | 0.97 | 0.87 | 0.89 | 0.84 |
 STDEV | 0.07 | 0.06 | 0.06 | 0.1 | 0.08 | 0.11 |
 MED | 0.92 | 1.00 | 1.00 | 1.00 | 0.92 | 0.83 |
 MAD | 0.08 | 0.00 | 0.00 | 0.10 | 0.05 | 0.08 |