CU depth-based ALF decision for fast HEVC encoding

Sanghyo Park, Kiho Choi, Euee S. Jang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

In this paper, we propose a coding unit (CU) depth-based adaptive loop filter (ALF) decision method to reduce the encoder complexity. In high efficiency video coding (HEVC), ALF is designed based on Wiener filter to minimize the distortion between the original frame and the coded frame. In order to design the optimal filter for each CU, the filter design process is repeated 12 times per CU. The repetition of the filter design process occupies about 77 percent in the total ALF computation time, which substantially increases the encoder complexity. The proposed method simplifies the filter design with the CU depth-based ALF decision, which is based on the observation by exploiting ineffective computations. Experimental results show that the proposed method reduces the encoding time for the repetition of the filter design process by about 13 percent of that of the HEVC test model (i.e., HM 5.0) with 0.1 percent BD-rate increase.

Original languageEnglish
Title of host publication2012 IEEE 16th International Symposium on Consumer Electronics, ISCE 2012
DOIs
StatePublished - 2012
Event2012 IEEE 16th International Symposium on Consumer Electronics, ISCE 2012 - Harrisburg, PA, United States
Duration: 4 Jun 20126 Jun 2012

Publication series

NameDigest of Technical Papers - IEEE International Conference on Consumer Electronics
ISSN (Print)0747-668X

Conference

Conference2012 IEEE 16th International Symposium on Consumer Electronics, ISCE 2012
Country/TerritoryUnited States
CityHarrisburg, PA
Period4/06/126/06/12

Fingerprint

Dive into the research topics of 'CU depth-based ALF decision for fast HEVC encoding'. Together they form a unique fingerprint.

Cite this