Diagonal‐based fast intra‐mode decision algorithm for HEVC

Fast algorithm for HEVC intra‐coding implemented by preprocessing

“…Tseng et al [5] 1.00 25.0 Liu et al [14] 0.60 29.5 Abdelrasoul et al [15] 1.75 40.8 Jamali et al [19] gradient analysis 0.62 11.4 Jamali et al [19] RDO cost modelling 0.81 29.5 Lu et al [26] 1.51 39.0 Yao et al [27] 1.86 36.3 Benhajyoussef et al [25] 0.90 31.8 proposed 0.47 20.1…”

“…Based on this, the number of candidate modes for RMD and RDO is reduced from 35 to 13 and 8 to 3, respectively. Abdelrasoul et al [15] prove the diagonals of the block can be used to predict the mode direction and nine basic directions are defined. Lim et al [16] take full advantage of the correlation of adjacent CUs and reduces candidate modes into the intra-prediction.…”

Fast prediction mode selection and CU partition for HEVC intra coding

“…It reduces the number of modes of the RMD process according to the statistical characteristics between the ratio of PU's horizontal gradient to vertical gradient and MPM [8]. In 2017, Maher et al employed block texture as feature to reduce the number of modes of RMD [12]. Apart from reducing the number of modes of the RMD process, some studies focused on directly reducing the number of modes for RDO.…”