Title :
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
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;
Conference_Titel :
Consumer Electronics (ISCE 2014), The 18th IEEE International Symposium on
Conference_Location :
JeJu Island
DOI :
10.1109/ISCE.2014.6884419
