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Intra prediction unit division method, device and electronic device

An intra-frame prediction and sub-block technology, applied in the field of video processing, can solve the problems of inability to meet monitoring requirements, poor practicability of monitoring video, and rough image area division, and achieve the effect of facilitating intelligent analysis, reducing image quality, and reducing bit rate.

Active Publication Date: 2019-09-13
BEIJING ZHIGUANG BOYUAN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the existing intra prediction unit division method only considers the texture complexity of each part of the image, in the surveillance video, the image area where the objects with high texture complexity such as leaves and billboards in the background are usually divided is finer. , and the division of image regions where objects with low texture complexity such as pedestrians, vehicles, and moving objects is relatively rough, which easily leads to better image quality in uninterested background regions, and poorer image quality in interested target regions. As a result, the encoded monitoring video has poor practicability and cannot meet the actual monitoring needs.

Method used

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  • Intra prediction unit division method, device and electronic device
  • Intra prediction unit division method, device and electronic device

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Embodiment 1

[0056] In the field of video surveillance, people mainly care about objects such as people, vehicles and other moving objects rather than the background area. Pedestrians, license plates, vehicles, etc. At present, the common monitoring scene is to use a fixed camera and a wide-angle lens to shoot a large scene. The faces, pedestrians, license plates, vehicles and other objects in the scene generally occupy a small area of ​​the screen, and not many details are retained. The higher-precision division and detail preservation of these targets will cause great difficulties for subsequent image processing and intelligent analysis. The embodiment of the present invention is applied in the field of video surveillance. According to the target area and the background area in the video image, the intra prediction units are divided into different levels, so that more details of the target area are retained, which is convenient for subsequent intelligent analysis. And because the backgr...

Embodiment 2

[0093] image 3 A schematic diagram of the module composition of the intra prediction unit division device provided by the embodiment of the present invention, as shown in image 3 As shown, the device includes:

[0094] A target acquisition module 31, configured to acquire key forecast targets, where the key forecast targets include people and / or vehicles;

[0095] The area determining module 32 is used to determine the target area and the background area in the current image according to the above-mentioned key prediction target;

[0096] A requirement acquisition module 33, configured to acquire the fineness requirements corresponding to the above-mentioned target area and background area;

[0097] The division module 34 is configured to divide the prediction units of the target area and the background area respectively according to the fineness requirements corresponding to the target area and the background area.

[0098] In the embodiment of the present invention, the...

Embodiment 3

[0100] 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 .

[0101] 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.

[0102] 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 intra-frame prediction unit division method, an intra-frame prediction unit division device and electronic equipment, and relates to the technical field of video processing.The method comprises the steps of acquiring an important prediction target, wherein the important prediction target comprises a person and / or a vehicle; determining a target area and a background areain a current image according to the important prediction target; acquiring fineness requirements corresponding to the target area and the background area; and separately performing prediction unit division on the target area and the background area according to the fineness requirements corresponding to the target area and the background area. According to the intra-frame prediction unit divisionmethod and device, and the electronic equipment provided by the invention, image quality of the interested target area can be improved, the image quality of the background area can be reduced, and thus a bit rate of a coded monitoring video is reduced, and practicability of the same is improved.

Description

technical field [0001] The present invention relates to the technical field of video processing, in particular to a method, device and electronic equipment for dividing intra-frame prediction units. 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 intra-frame prediction of video coding refers to using the correlation of the video spatial domain to predict the current pixel block using the encoded pixel block of the current image, so as to achieve the purpose of removing video spatial redundancy. [0003] The core of intra prediction is the division of prediction units. In the prior art, the coding standard H.265 / HEVC divides the image into 64×64, 32×32, 16×16, 8×8, 4×4 and other sizes according to the texture complexity of each part of the image. Prediction unit, areas with high texture compl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/105H04N19/119H04N19/19H04N19/20H04N19/593G06T7/11G06T7/194G06K9/32
Inventor 马兆远王路邱婧
Owner BEIJING ZHIGUANG BOYUAN SCI & TECH
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