Tytuł artykułu

Key-point Detection based Fast CU Decision for HEVC Intra Encoding

Tytuł czasopisma

International Journal of Electronics and Telecommunications




No 3

Autorzy publikacji

Słowa kluczowe

HEVC ; Video Coding ; Fast CU Decision ; Corner Detection

Wydział PAN

Nauki Techniczne


As the most recent video coding standard, High Efficiency Video Coding (HEVC) adopts various novel techniques, including a quad-tree based coding unit (CU) structure and additional angular modes used for intra encoding. These new techniques achieve a notable improvement in coding efficiency at the penalty of significant computational complexity increase. Thus, a fast HEVC coding algorithm is highly desirable. In this paper, we propose a fast intra CU decision algorithm for HEVC to reduce the coding complexity, mainly based on a key-point detection. A CU block is considered to have multiple gradients and is early split if corner points are detected inside the block. On the other hand, a CU block without corner points is treated to be terminated when its RD cost is also small according to statistics of the previous frames. The proposed fast algorithm achieves over 62% encoding time reduction with 3.66%, 2.82%, and 2.53% BD-Rate loss for Y, U, and V components, averagely. The experimental results show that the proposed method is efficient to fast decide CU size in HEVC intra coding, even though only static parameters are applied to all test sequences.


Polish Academy of Sciences Committee of Electronics and Telecommunications




Artykuły / Articles


ISSN 2081-8491 (until 2012) ; eISSN 2300-1933 (since 2013)