부산대학교 도서관

Many new techniques have been adopted in HEVC (High efficiency video coding) standard, such as quadtreestructuredcoding unit (CU), prediction unit (PU) partition, 35 intra-mode, and so on. To reduce computationalcomplexity, the paper proposes two optimization algorithms which include fast CU depth range decision andfast PU partition mode decision. Firstly, depth range of CU is predicted according to spatial-temporalcorrelation. Secondly, we utilize the depth difference between the current CU and CU corresponding to thesame position of adjacent frame for PU mode range selection. The number of traversal candidate modes isreduced. The experiment result shows the proposed algorithm obtains a lot of time reducing, and the loss ofcoding efficiency is inappreciable.