Motion estimating method for H.264/AVC coder

Abstract

A motion estimating method of H.264 / AVC coder divides integer motion estimation to be rough layer and fine layer being estimated separately in sequence then inputting parallel interpolation of half pixel and fine layer motion estimation into reference frame data and integer pixel data of rough layer motion vector separately and carrying out half pixel motion estimation as well as quarter pixel motion estimation for calculating out final minimum residual error and its corresponding final motion vector by utilizing motion vector corresponding to minimum residual error under optimum prediction mode obtained from rough layer motion estimation.

Description

technical field [0001] The present invention relates to a motion estimation method, in particular to a hardware realization of a fast motion estimation method for an H.264 / AVC coder. Background technique [0002] The H.264 / AVC standard is a video compression for low-bit-rate video communication applications jointly developed by the VCEG (Video Experts Group) of ITU-T and the MPEG (Moving Picture Experts Group) of the International Organization for Standardization ISO. standard, but its excellent compression performance makes its role not limited to this. has received extensive attention and research. The compression ability of the H.264 / AVC standard for moving images is largely due to the motion estimation algorithm it adopts, that is, the 16*16 pixel block is defined as a macroblock (MB), and each Macroblocks can be divided into 16*16, 16*8, 8*16, 8*8, 8*4, 4*8 or 4*4 sub-blocks with different sizes and shapes. The way the blocks are divided is called the prediction mode...

AI Technical Summary

Problems solved by technology

[0004] Although the global search method can get the best motion estimation result, its calculation amount is astonishing, and it needs frequent access to the memory storing the reference frame, which requires a long calculation time

The H.264 / AVC standard is used in video communication, digital broadcasting, network TV streaming media transmission and other fields, and has high requirements for real-time performance. Such a large amount of calculation and calculation time cannot meet this requirement.

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