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Table 8 The parameters used for training libSVM for feature set HPP [15], TUHPP, DCT136 [11], and TUDCT136 on CIF 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-IP(10D)
 c 0.5 2.8284 1 11.3137 8 8
 g 16 16 16 2.8284 2.8284 2.8284
HPP(25D)
 c 2.8284 0.25 2 0.70711 1.4142 4
 g 2 0.5 1.4142 2.8284 1.4142 1
TUHPP(35D)
 c 1 0.25 1 2.8284 0.70711 5.6569
 g 0.70711 0.17678 1.4142 1 0.35355 0.5