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Real-time stitching method for high-definition video

A high-definition video and video technology, which is applied in the direction of TV, color TV, closed-circuit television system, etc., to achieve the effect of splicing video with clear and natural transition, ensuring real-time performance and eliminating ghosting

Inactive Publication Date: 2018-09-04
ZHEJIANG UNIV
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  • Application Information

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Problems solved by technology

[0006] Aiming at the real-time problem of high-definition video splicing and the ghost problem caused by moving objects, the present invention provides a real-time high-definition video splicing method

Method used

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  • Real-time stitching method for high-definition video

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Embodiment Construction

[0028] The present invention proposes a high-definition video real-time mosaic method, the process of which is as follows figure 1 shown. The method mainly includes the steps of synchronous video decoding, initialization and frame-by-frame splicing. Firstly, collect the high-definition original video of the network camera, and decode the multi-channel video synchronously. Before stitching, the first frame of video needs to be initialized, including steps such as sub-region-based video registration, search for the best suture line group, and generation of a lookup table. After the initialization is completed, the frame-by-frame video stitching is carried out, including the coordinate mapping of the video image, the detection of moving objects, the update of the seam line, the video fusion and other steps, and finally the stitched video is output.

[0029] Step S1: collect raw data of multiple channels of high-definition video through the TCP protocol, synchronize video frames...

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Abstract

The invention discloses a real-time stitching method for a high-definition video. The method mainly comprises the following steps of synchronous video decoding, initialization, frame-by-frame stitching and the like. Firstly, a high-definition original video of a network camera is collected, and the video is synchronously decoded. For a first frame of video image, the initialization is carried outand includes the steps of video registration based on sub-regions, finding of an optimal stitching line set, generation of a look-up table and the like. After the initialization is completed, the frame-by-frame stitching is carried out and includes the steps of coordinate mapping of video images, detection of a moving object, stitching line update, video fusion and the like, and finally a stitchedvideo is output. In addition, a parallelization strategy is adopted for each step in video decoding and frame-by-frame stitching stages. According to the method, the real-time requirement of high-definition video stitching can be met, and a stitching frame rate is not less than 30 fps for a double-path 720P video; and meanwhile, the phenomena of ghosting, blurring, exposure inconsistence and thelike in the stitched video are avoided.

Description

technical field [0001] The invention belongs to the technical field of video image processing, in particular to a high-definition video real-time splicing method. Background technique [0002] Video splicing technology is a technology that registers and fuses multiple videos with overlapping areas to finally form a large field of view video. With the development of digital video technology and computer technology, the application of real-time splicing of high-definition video is becoming more and more extensive, such as intelligent monitoring, video conferencing, and assisted driving. Video stitching is an extension of image stitching in the time dimension. Therefore, video stitching technology is based on image stitching, but it is different from image stitching. Real-time stitching of high-definition videos places high demands on the speed of stitching methods. [0003] At present, software-based video stitching is mainly offline stitching, and the resolution and frame r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/262H04N7/18H04N5/04H04N5/14H04N5/21
CPCH04N5/04H04N5/144H04N5/211H04N5/2624H04N7/181
Inventor 王宣银苏子凡向可曹松晓
Owner ZHEJIANG UNIV
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