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Hierarchical Motion Estimation Using Nonlinear Scaling and Adaptive Source Block Size

A motion estimation, non-linear technology, applied in the field of image processing, can solve the problem of wrong identification of local minimum

Active Publication Date: 2020-08-25
INTEL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, especially with respect to low-energy or flat image content, such methods may generate suboptimal predictors by falsely identifying local minima that are far from details in the image content

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  • Hierarchical Motion Estimation Using Nonlinear Scaling and Adaptive Source Block Size
  • Hierarchical Motion Estimation Using Nonlinear Scaling and Adaptive Source Block Size
  • Hierarchical Motion Estimation Using Nonlinear Scaling and Adaptive Source Block Size

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Embodiment Construction

[0021] One or more embodiments or implementations will now be described with reference to the accompanying figures. While specific configurations and layouts are discussed, it should be understood that this is done for illustration only. Those skilled in the relevant art will recognize that other configurations and arrangements can be used without departing from the spirit and scope of the description. It will be apparent to those skilled in the relevant art that the techniques and / or arrangements described herein may also be used in various other systems and applications than those described herein.

[0022] Although the following description sets forth various implementations that may be embodied in an architecture such as, for example, a System-on-Chip (SoC) architecture, implementations of the techniques and / or layouts described herein are not limited to specific architectures and and / or computing system, and may be implemented for a similar purpose by any architecture an...

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Abstract

Systems, devices, and methods are described that include applying non-linear scaling to a current image frame and a reference image frame to generate at least a corresponding current image layer and a corresponding reference image layer. Hierarchical motion estimation can then be performed using the non-linearly scaled image layers. Further, the source block size may be adaptively determined in the downsampled image layer, and hierarchical motion estimation may be performed using the adaptively sized source block.

Description

technical field [0001] The present application relates to image processing, and in particular to hierarchical motion estimation using nonlinear scaling and adaptive source block size. Background technique [0002] Video codecs typically use motion estimation (ME) to improve video compression performance by removing or reducing temporal redundancy between video frames. To encode an input block, in the encoder module, conventional ME is performed, using a specified search window in at least one reference frame, to seek to minimize some difference metric, such as the distance between the input source block and the reference block pointed by the motion vector. The sum of absolute differences (SAD), the motion vector. The motion vector information can then be transferred to the decoder module for motion compensation. [0003] In general, higher coding gains can be achieved during ME by using larger search windows. However, using a larger search window increases coding complexi...

Claims

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Application Information

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IPC IPC(8): H04N19/53H04N19/56G06T7/207
CPCH04N19/53G06T7/207H04N19/56
Inventor J·D·坦纳江宏
Owner INTEL CORP
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