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Interframe motion estimation method and device and electronic equipment

An inter-frame motion and estimated value technology, applied in the field of video processing, can solve the problems of high quality encoded video, inability to meet real-time encoding requirements, and high complexity of full search

Active Publication Date: 2017-12-15
BEIJING ZHIGUANG BOYUAN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional video coding standards usually use methods such as full search, two-dimensional logarithmic search, three-dimensional logarithmic search, UMHexagonS search, and TZ search. Among them, full search is extremely complex and cannot meet the needs of real-time coding; other fast algorithms can only get The local optimal reference block, rather than the global optimal reference block, makes the quality of its encoded video not as high as that of the full search encoded video

Method used

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  • Interframe motion estimation method and device and electronic equipment
  • Interframe motion estimation method and device and electronic equipment
  • Interframe motion estimation method and device and electronic equipment

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Embodiment 1

[0048] Considering that in the field of video surveillance, a fixed camera and a wide-angle lens are mainly used to cover a large area, the embodiment of the present invention proposes an inter-frame motion estimation method, which can overcome the problem that the full search speed is too slow and the global optimum cannot be obtained by fast search. Insufficient, to achieve faster and more accurate multi-moving target detection and tracking.

[0049] figure 1 The first schematic flow chart of the inter-frame motion estimation method provided by the embodiment of the present invention, as shown in figure 1 As shown, the method includes the following steps:

[0050] Step S101, establishing a background model according to the current frame image and the encoded frame image.

[0051] Considering that the surveillance video is captured by a fixed camera, a relatively stable background model can be established for the surveillance video. Specifically, based on the current frame...

Embodiment 2

[0079] image 3 A schematic diagram of the module composition of the inter-frame motion estimation device provided by the embodiment of the present invention, as shown in image 3 As shown, the device includes:

[0080] A model building module 31, configured to create a background model according to the current frame image and the encoded frame image;

[0081] The area determination module 32 is used to determine the moving target area of ​​the current frame image according to the above-mentioned background model;

[0082]The vector determination module 33 is configured to track each moving object in the above-mentioned moving object area, and determine the motion vector of each moving object between the current frame image and the corresponding reference frame image; wherein, the reference frame image is the distance between the current frame image and the current frame image The encoded frame image that best matches the moving target;

[0083] The initial value determinat...

Embodiment 3

[0088] see Figure 4 , the embodiment of the present invention also provides an electronic device 100, including: a processor 40, a memory 41, a bus 42 and a communication interface 43, the processor 40, the communication interface 43 and the memory 41 are connected through the bus 42; Executable modules, such as computer programs, stored in the execution memory 41 .

[0089] Wherein, the memory 41 may include a high-speed random access memory (RAM, Random Access Memory), and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 43 (which may be wired or wireless), and the Internet, wide area network, local network, metropolitan area network, etc. can be used.

[0090] The bus 42 can be an ISA bus, a PCI bus or an EISA bus, etc. The bus can be divided into address bus, data bu...

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Abstract

The invention provides an interframe motion estimation method and device and electronic equipment. The method includes the steps of according to a current frame image and a known coding frame image, building a background model; according to the background model, determining a moving target area of the current frame image; tracking each moving target in the moving target area, and determining a motion vector of each moving target; according to the motion vectors, obtaining an initial motion vector value of each pixel block in the moving target area; as for each pixel block, searching for the optimal global matching reference block of the pixel block in a preset domain of a searching point which the initial motion vector value of the pixel block in the reference frame image points to, and calculating a motion vector estimation value of the pixel block; adopting the motion vector estimation value of each pixel block and the corresponding matching reference block as interframe motion estimation parameters of the current frame image. In this way, time consumption for interframe motion estimation can be reduced, real-time coding demands are met, and the motion estimation precision is improved so that the quality of coding videos is improved.

Description

technical field [0001] The present invention relates to the technical field of video processing, in particular to an inter-frame motion estimation method, device and electronic equipment. Background technique [0002] The video coding process is mainly divided into four steps: prediction, transformation, quantization, and entropy coding. The prediction is mainly divided into intra prediction and inter prediction. The inter-frame prediction of video coding refers to using the correlation of the video time domain to predict the current pixel block of the current image to be encoded by using the coded pixel block of the temporally adjacent coded image, so as to achieve the purpose of removing video time domain redundancy. . [0003] The core of inter-frame prediction is block-based motion estimation, which is to find a best matching block in the previously coded image for each pixel block of the current image, so as to obtain the motion vector corresponding to each pixel block...

Claims

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Application Information

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IPC IPC(8): H04N19/51H04N19/55
CPCH04N19/51H04N19/55
Inventor 马兆远王路邱婧
Owner BEIJING ZHIGUANG BOYUAN SCI & TECH
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