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Patent

System and method for predictive motion estimation using a global motion predictor

Shijun Sun
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TLDR
In this article, a system and method for using global motion predictors (GMPs) in predictive motion estimation for the compression of video is presented. But the method is not suitable for video streaming.
Abstract: 
A system and method are provided for using global motion predictors (GMPs) in predictive motion estimation for the compression of video. The method comprises: receiving video frames; generating a set of global motion parameters for a current frame of video; in response to the global motion parameters, generating GMPs for image blocks in the current frame; estimating motion between the current frame and a reference frame; subtracting reference blocks in the reference frame from image blocks in the current frame, leaving residual image blocks; and, encoding the residual image blocks in a video stream. Some aspects of the method further comprise: generating local motion predictors (LMPs). Then, estimating motion between the current frame and a reference frame includes estimating motion using the GMPs and the LMPs. The process of estimating motion typically involves using previously encoded information, such as temporarily distant reference frames or other image blocks in the current frame.

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Citations
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TL;DR: In this paper, an intra-TP motion prediction/compensation unit 75 performs motion prediction within a predetermined search range by taking predicted motion vector information generated by an intrapredicted motion vector generating unit 76 as the center of search, on the basis of an image to be intra-predicted from a screen rearrangement buffer 62 and reference images from a frame memory 72.
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Byeong Moon Jeon
Abstract: In the method of determining a motion vector for deriving motion vectors of a bi-predictive image block, one of a first and second motion vector of a co-located image block for a bi-predictive image block is selected as a motion vector for deriving motion vectors of the bi-predictive image block.
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Mainak Biswas, +2 more
TL;DR: In this article, a motion compensated frame rate converter is proposed to estimate global and local motions between a pair of temporally adjacent frames of an input signal and apply these motion vectors to produce at least one interpolated, motion-compensated frame between the adjacent frames.
References
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Patent

Motion estimation system and method

Arturo A. Rodriguez, +2 more
TL;DR: In this article, a predictor block which is a best match for a current block is located by comparing the current block of the picture currently being encoded with candidate blocks located using the motion vectors of blocks that are either spatially or temporally proximate to the current one.
Patent

Intelligent start for motion estimation search

Brian Astle
TL;DR: In this paper, motion vectors which have been calculated for immediately adjacent blocks in the same image and for corresponding blocks in previous images are used to improve the efficiency of the block-matching search.
Patent

Circuit for motion estimation in digitised video sequence encoders

Fabio Bellifemine, +11 more
TL;DR: In this paper, an integrated circuit for motion estimation in digitized video sequence encoders comprises at least two operating units (M1, M2) which are arranged to concurrently process in different ways different pixel groups according to a MIMD technique.
Patent

Motion estimation and compensation in video compression

D.M. Monro, +1 more
TL;DR: In this paper, a method of video motion estimation is described for determining the dominant motion in a video image, which is defined by a parametric transform, for example a similarity transform.
Patent

Image motion estimation system which derives candidate block from interpolated motion vectors

Wai-Man Lam
TL;DR: In this paper, a block match search is used to identify candidate Field predicted blocks and associated motion vectors from which other motion vectors are extrapolated to identify additional predicted blocks, and then the candidate predicted blocks are mutually compared, and one of the blocks is selected consistent with compression data rate requirements.