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Real motion estimation method and device, computer readable storage medium, terminal

A real motion and re-motion technology, applied in the field of image processing, can solve problems such as the inability to quickly converge motion vectors

Active Publication Date: 2021-03-09
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

However, this scanning order will cause the motion vector to converge along the order from top to bottom, or from left to right, and cannot quickly converge to the real motion vector

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  • Real motion estimation method and device, computer readable storage medium, terminal
  • Real motion estimation method and device, computer readable storage medium, terminal
  • Real motion estimation method and device, computer readable storage medium, terminal

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Embodiment Construction

[0041] As mentioned in the background art, in the block matching method of three-dimensional recursive search in the prior art, the motion vector of the current block is a small-scale modification of the temporally and spatially predicted motion vector. The motion vector of the current block is also the next sub-block, the space-domain candidate vector and the temporal-domain candidate vector of the adjacent sub-block of the next row. Therefore, the motion estimation of the current block needs to adopt the raster scan order, ie, the order from top to bottom and from left to right, when calculating the candidate motion vectors of the sub-blocks obtained by dividing each frame image. However, this scanning order will cause the motion vectors to converge along the order from top to bottom or from left to right, which cannot quickly and accurately converge to the real motion vector.

[0042] In order to solve the above-mentioned problems existing in the prior art, the technical so...

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Abstract

A real motion estimation method and device, the method comprising: constructing an image pyramid of a current frame to obtain corresponding multiple scale images; traversing the constructed multiple scale images in order from low to high; acquiring the current scale image that requires The information of pixels for re-motion estimation and pixels that do not require re-motion estimation; respectively calculate the motion vectors of pixels that require and do not require re-motion estimation in the current scale image, and obtain the motion vector field of the current scale image; based on the current The pixels in the scale image and the flat area parameters of the current scale image determine the pixels in the next scale image that need and do not need re-motion estimation, and estimate the motion vector field of the next scale image until multiple scale images are traversed Done, get the motion vector field of the current frame. The above solution can improve the convergence speed of motion estimation.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a real motion estimation method and device, a computer-readable storage medium, and a terminal. Background technique [0002] At present, the codec technology in video transmission can obtain a high compression ratio. However, in order to adapt to some network bandwidth limitations, the temporal and spatial resolution of the video signal is usually reduced to reduce the amount of data. In the time domain, frame skipping at the encoding end can be used. accomplish. However, it will inevitably cause video motion discontinuity and image quality degradation at the decoding end, especially in fast moving and complex scenes. [0003] In order to solve the above problems, the original frame rate can be restored by adopting the video frame insertion technology at the decoding end, that is, the frame rate conversion technology, so as to improve the subjective visual effe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/14H04N7/01
CPCH04N5/145H04N7/014
Inventor 王森罗小伟林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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