Improved Intra-coding Methods for H.264/AVC

Abstract

The H.264/AVC design adopts a multidirectional spatial prediction model to reduce spatial redundancy, where neighboring pixels are used as a prediction for the samples in a data block to be encoded. In this paper, a recursive prediction scheme and an enhanced (block-matching algorithm BMA) prediction scheme are designed and integrated into the state-of-the-art H.264/AVC framework to provide a new intra coding model. Extensive experiments demonstrate that the coding efficiency can be on average increased by 0.27 dB with comparison to the performance of the conventional H.264 coding model.

Intra Prediction Algorithm Using Adaptive Modes

“…Many studies have been done to improve the coding efficiency of intra prediction [6][7][8][9][10][11][12][13] . Tsukuba et al [7] selected one of five predictor sets consisting of nine prediction modes on each macroblock (MB).…”

“…Thiow Keng Tan et al [11] proposed a template matching method as a sample predictor using a region of reconstructed pixels. A recursive prediction and an enhanced block-matching algorithm are proposed [12] . Kwang Su Jung et al [13] proposed a new 4x4 intra coding method by unidirectional prediction for improvement.…”