Open AccessThumbnail extraction for HEVC using prediction modes
Author(s) -
Lee Wonjin,
Jeon Gwanggil,
Jeong Jechang
Publication year - 2015
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.2014.3529
Subject(s) - thumbnail , computer science , decoding methods , coding (social sciences) , artificial intelligence , computer vision , pixel , frame (networking) , process (computing) , image (mathematics) , algorithm , mathematics , statistics , operating system , telecommunications
The existing thumbnail extraction method generates a thumbnail by reducing the reconstructed frame after a full decoding process. This method is complex and requires considerable time, particularly for higher resolution video. To alleviate these issues, a fast thumbnail extraction method which utilises an intra‐prediction mode for high‐efficiency video coding (HEVC) is presented. The proposed method reconstructs only the 4×4 boundary pixels needed for a thumbnail image based on the intra‐prediction mode. Experimental results indicate that the proposed method significantly reduces the computational complexity and extraction time for a thumbnail image. The visual quality of thumbnail images obtained with this method does not differ significantly from that of images extracted after a full decoding process.