The Intra Prediction in H.264

Abstract

A multidirectional spatial prediction method to reduce spatial redundancy by using neighbouring samples as a prediction for the samples in a block of data to be encoded is already included in the H.264/AVC. The spatial prediction may be performed on sample wise DPCM instead of the block-based manner as used in the current H.264/AVC standard. The block structure is retained for the residual difference entropy coding process. There are two approaches of spatial prediction i.e. sample prediction and block prediction. The Second approach is more efficient. It is being introduced into the H.264/AVC standard as an enhancement. This paper is a brief survey of what is important in intra prediction and with some experimental work. The work involves running of the code of H.264.

Dynamic Lists for Efficient Coding of Intra Prediction Modes in the Future Video Coding Standard

“…both Intra and Inter coded slices. The number of IPMs has increased from 14 modes in AVC [11] to 35 and 67 in HEVC and JEM, respectively. These modes cover a wider range of directions towards the reference pixels to enhance the accuracy and efficiency of Intra prediction (See Fig.…”