Open AccessJust‐noticeable‐distortion‐based fast coding unit size decision algorithm for high efficiency video coding
Author(s) -
Wu Wei,
Song Bin
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.3981
Subject(s) - coding tree unit , coding (social sciences) , algorithm , computer science , algorithmic efficiency , context adaptive binary arithmetic coding , computation , computational complexity theory , rate distortion , decoding methods , mathematics , data compression , statistics
To reduce the computation complexity of high‐efficiency video coding, a just‐noticeable‐distortion is introduced into fast video encoding and a fast coding unit size decision algorithm is proposed. In the proposed algorithm, the spatiotemporal factors of 8 × 8 blocks are computed using the spatiotemporal just‐noticeable‐distortion, and then a measure is built to represent the spatiotemporal homogeneity of a coding unit, and finally the candidate coding unit sizes are predicted. Compared with the state‐of‐the‐art fast algorithm, experimental results show that the proposed algorithm can achieve 23.60% coding time saving while maintaining a similar coding efficiency.