On fast coding tree block and mode decision for high-Efficiency Video Coding (HEVC)

Fast algorithm for the High Efficiency Video Coding (HEVC) encoder using texture analysis

“…The coding block flag (CBF) and the motion vector difference for inter-2 N × 2 N are zero when the corresponding CB is considered to be skip mode. An early partition decision (EPD) algorithm [28] was reported that terminates the mode decision process after checking the RD cost of 2 N × 2 N inter-mode. If the calculated RD cost is less than the average RD cost of a number of previously coded SKIP CUs of the same CU size, then the corresponding CU is considered to be encoded as skip mode.…”

A fast CU Size Decision Algorithm for 3D-HEVC

“…In addition, in order to take full advantage of interview correlation, we define a Correlated Split Complexity (CSC) in (6).…”

“…C S C = m ax { S C _ co l,S C _ L ,S C _ U ,S C _ R ,S C _ D } (6) [2,3]. Where Th,th1,th2,th3 are thresholds, and they are set as 3.0,1.0,2.0 ,5.0 according to extensive experiments.…”

“…Fast algorithms for HEVC inter prediction mainly aim at the process of coding unit (CU) selection which has high complexity. Method in [6] is proposed to terminate procedures of CU splitting by setting a threshold value based on the RD-cost of the CUs which have already been coded, if the RD-cost of the current CU is less than this threshold ,CU will stop splitting, and a fast CU size decision method based on coding tree pruning is proposed in [7]. Shen et al [8] propose three early termination methods based on motion homogeneity checking, RD cost checking and SKIP mode checking to skip the procedure of motion estimation on unnecessary small CU sizes.…”

A novel motion classification based intermode selection strategy for HEVC performance improvement

“…This method reduces 39% computational time by sacrificing 0.8% bit-rate. Tan et al [17] introduce an algorithm for HEVC standard where they investigate and compare a variety of algorithms for fast coding tree block and mode decision by introducing early partition decision and early CU termination approach. Experimental results evaluate the gain of 40% encoding time with the loss of 1.0% bit-rate.…”