Open AccessFast coding unit decision based on skipping of inter and intra prediction units
Author(s) -
Yoo HyangMi,
Suh JaeWon
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.0451
Subject(s) - coding (social sciences) , computational complexity theory , coding tree unit , computer science , algorithm , variable length code , algorithmic efficiency , rate distortion , theoretical computer science , decoding methods , mathematics , statistics
To obtain a high coding gain, high‐efficiency video coding employs the recursive quad‐tree structured coding unit (CU) for the smallest coding layer. The computational complexity, however, increases dramatically because the CU and its associated prediction units (PUs) are tested thoroughly by the rate‐distortion (RD) optimisation method. To reduce the computational complexity, a fast CU decision algorithm is presented based on skipping of inter and intra PUs by checking the coded block flag (CBF) and RD cost. Experimental results show that the proposed algorithm saves ∼35.39% of encoding time.