Fast rough mode decision method based on edge detection for intra coding in HEVC

Author

Byungjin Chung ; Joohyeok Kim ; Changhoon Yim

Author_Institution

Dept. of Internet & Multimedia Eng., Konkuk Univ., Seoul, South Korea

fYear

2014

fDate

22-25 June 2014

Firstpage

1

Lastpage

2

Abstract

In this paper, we propose a fast rough mode decision method based on edge detection for intra coding in HEVC. It performs edge detection using Sobel operator and estimates the angular direction using gradient values. Histogram mapping is used to reduce the number of prediction modes for full rate-distortion optimization (RDO). The proposed method can achieve processing speed improvement through RDO computation reduction. Simulation results shows that encoding time is reduced significantly compared to HM-13.0 with acceptable BD-PSNR and BD-rate.

Keywords

edge detection; video coding; BD-rate; HEVC; HM-13.0; RDO computation reduction; Sobel operator; acceptable BD-PSNR; angular direction estimation; edge detection; encoding time; fast rough mode decision method; full RDO; full rate-distortion optimization; gradient values; histogram mapping; intracoding; prediction mode number reduction; processing speed improvement; Encoding; Histograms; Image edge detection; Rate-distortion; Simulation; Standards; Video coding; HEVC; edge detection; intra prediction; prediction mode;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics (ISCE 2014), The 18th IEEE International Symposium on

Conference_Location

JeJu Island

Type

conf

DOI

10.1109/ISCE.2014.6884419

Filename

6884419