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A method for chip storage applicable motion estimation

A technology of motion estimation and on-chip storage, which is applied in the field of video coding and decoding, and can solve problems such as occupation

Active Publication Date: 2008-01-09
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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Problems solved by technology

Many technologies related to memory bandwidth only consider whole-pixel motion estimation, and sub-pixel motion estimation and motion compensation are handled separately, which requires additional memory bandwidth and on-chip storage, and some sub-pixel motion estimation occupies on-chip Stores even more on-chip memory than integer-pixel motion estimation occupies

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  • A method for chip storage applicable motion estimation
  • A method for chip storage applicable motion estimation
  • A method for chip storage applicable motion estimation

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Embodiment Construction

[0015] Below, according to Fig. 1 to Fig. 7, a preferred embodiment of the present invention is given and described in detail, so that the functions and characteristics of the present invention can be better understood.

[0016] The present invention designs a circular columnar on-chip space to realize data prefetching, data reuse, space reuse, whole pixel motion estimation, sub-pixel motion estimation, and motion compensation, so as to speed up, reduce bandwidth, The purpose of saving storage.

[0017] The space inside the ring column is like this: the circumference of the ring column=EXT+2*SRX+16+2*SRX+EXT+H*16, the height of the ring column=EXT+2*SRY+16+2*SRY+ EXT+(V-1)*16, 16 is the width and height of the macroblock. SRX is the search range in the X direction, and SRY is the search range in the Y direction. EXT is the number of integer pixels above, below, left, and right of the optimal integer pixel required for 1 / 4 pixel interpolation. For AVS and h.264, EXT=3. H=1,2...

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Abstract

The method comprises: using an intra-slice space with column shape to realize the prefetch of data, reuse of data and space, motion estimation and motion compensation. The perimeter and height of the column both use pixel as the unit; the perimeter is EXT+2*SRX+16+ 2*SRX+EXT+H*16, and the height is EXT+2*SRY+16+2*SRY+EXT+(V-1)*16; wherein, SRX is the searching range in X direction, and the SRY is the searching range in y direction; EXT is up, down, left and right integer pixel number around the optimal integer pixel point required by 1 / 4 pixel interpolation.

Description

technical field [0001] The invention belongs to the technical field of video encoding and decoding, in particular to an on-chip storage method capable of speeding up motion estimation, reducing bandwidth and saving storage. Background technique [0002] With the development of information technology, the application of video is more and more extensive. Video surveillance, video conferencing, video on demand, digital TV, mobile TV, IPTV, videophone, laser video disc, etc. constitute a huge market. Video codec algorithms and standards are also constantly improving. Among them, AVS and H.264 are currently the two major standards representing the second-generation video codec advanced technology at home and abroad, and have a good market prospect. Since both AVS and H.264 adopt technologies such as multi-reference frames, multi-size blocks, and 1 / 4 sub-pixel precision, while obtaining low bit rate and high quality, it also greatly increases the computational complexity of motio...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N19/182H04N19/433H04N19/51
Inventor 田野
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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