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A reference frame synthesis method and device for vehicle object coding in surveillance video

A monitoring video and object coding technology, which is applied in the field of reference frame synthesis of vehicle object coding, can solve the problems of low coding efficiency, achieve the effects of robust environmental factors, improve coding efficiency, and reduce prediction residuals

Active Publication Date: 2020-10-30
WUHAN UNIV
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  • Application Information

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Problems solved by technology

[0007] In view of this, the present invention provides a reference frame synthesis method and device for vehicle object coding in surveillance video, to solve or at least partially solve the technical problem of low coding efficiency in the existing methods

Method used

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  • A reference frame synthesis method and device for vehicle object coding in surveillance video
  • A reference frame synthesis method and device for vehicle object coding in surveillance video
  • A reference frame synthesis method and device for vehicle object coding in surveillance video

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Embodiment 1

[0058] This embodiment provides a reference frame synthesis method for vehicle object coding in surveillance video, please refer to figure 1 , the method includes:

[0059] First, step S1 is performed: based on the 3D model of the vehicle object in the historical surveillance video, a global reference frame is generated.

[0060] Specifically, due to the single-source object coding method or multi-source object coding method commonly used in the prior art, the single-source object coding method uses local information for prediction, and it is difficult to eliminate the redundancy existing between different videos, while the multi-source object coding method The encoding method utilizes global information for prediction, which is easily affected by environmental factors such as illumination. Therefore, it is difficult to achieve ideal coding efficiency by using local or global information prediction alone. Therefore, based on the idea of ​​image fusion, the present invention ...

Embodiment 2

[0126] This embodiment provides a reference frame synthesis device for vehicle object coding in surveillance video, please refer to figure 2 , the device consists of:

[0127] The global reference frame generation module is used to generate a global reference frame based on the three-dimensional model of the vehicle object in the historical surveillance video;

[0128] The local reference frame generation module is used to perform three-dimensional pose transformation on the vehicle object in the encoded video frame according to the vehicle object in the video to be encoded to generate a local reference frame;

[0129] The synthesis module is configured to set a corresponding fusion method according to the image attributes of different regions of the vehicle, and fuse the global reference frame and the local reference frame based on the corresponding fusion method to generate a synthetic reference frame.

[0130] In one embodiment, the global reference frame generation modul...

Embodiment 3

[0157] See image 3 , based on the same inventive concept, the present application also provides a computer-readable storage medium 300, on which a computer program 311 is stored. When the program is executed, the method as described in the first embodiment is implemented.

[0158]Since the computer-readable storage medium introduced in the third embodiment of the present invention is the computer equipment used to implement the reference frame synthesis method for vehicle object coding in the surveillance video in the first embodiment of the present invention, it is based on the introduction in the first embodiment of the present invention method, those skilled in the art can understand the specific structure and deformation of the computer-readable storage medium, so details are not repeated here. All computer-readable storage media used in the method in Embodiment 1 of the present invention fall within the scope of protection intended by the present invention.

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Abstract

The invention discloses a reference frame synthesis method for vehicle object coding in a monitoring video, and the method comprises the steps: generating a global reference frame, generating a localreference frame, and carrying out the fusion of the global reference frame and the local reference frame, and the global reference frame is obtained through the perspective projection transformation of the common information of vehicle objects in a historical monitoring video; wherein the local reference frame is obtained by utilizing local information of a vehicle object in a current to-be-codedvideo, namely the vehicle object in a coded video frame through three-dimensional attitude transformation; and global and local reference frames are fused, a fusion method is designed according to image attributes of different areas of the vehicle, and a final synthetic reference frame is obtained. The local knowledge and the global knowledge are fused to construct the composite reference frame for predictive coding of the vehicle object in the monitoring video, the composite reference frame not only is robust to environmental factors such as illumination, but also contains rich detail information, and the coding efficiency of the vehicle object in the monitoring video is improved.

Description

technical field [0001] The invention relates to the technical field of surveillance video encoding, in particular to a reference frame synthesis method and device for encoding vehicle objects in surveillance video. Background technique [0002] Today, surveillance cameras have widely covered most public areas such as roads and communities. These cameras will generate massive amounts of surveillance video data every day. It takes a lot of resources to store these surveillance videos. It is urgent to study efficient surveillance video encoding methods. [0003] In the prior art, the surveillance video coding method usually separates the moving foreground and the static background of the surveillance video, and designs coding strategies respectively according to their characteristics. The predictive coding of static background can achieve high precision, and the technology is relatively mature, so the room for performance improvement is limited. In contrast, foreground objects...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/136H04N19/167H04N19/146H04N19/85H04N19/50H04N19/172H04N7/18G06T7/11
Inventor 胡瑞敏陈宇肖晶朱荣王中元廖良
Owner WUHAN UNIV
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