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Fast Mode Decision Technique for HEVC Intra Prediction Based on Reliability Metric for Motion Vectors
Chihiro TSUTAKE Yutaka NAKANO Toshiyuki YOSHIDA
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/04/01
Online ISSN: 1745-1361
Type of Manuscript: PAPER
Category: Image Processing and Video Processing
H.265/HEVC, intra prediction, mode decision, reliability metric, coding efficiency, computational complexity,
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This paper proposes a fast mode decision technique for intra prediction of High Efficiency Video Coding (HEVC) based on a reliability metric for motion vectors (RMMV). Since such a decision problem can be regarded as a kind of pattern classification, an efficient classifier is required for the reduction of computation complexity. This paper employs the RMMV as a classifier because the RMMV can efficiently categorize image blocks into flat(uniform), active, and edge blocks, and can estimate the direction of an edge block as well. A local search for angular modes is introduced to further speed up the decision process. An experiment shows the advantage of our technique over other techniques.