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Video stitching method for sports scene

A video splicing and scene technology, applied in the field of video processing, can solve the problems of video frame chromatic aberration, ghosting, ghosting, etc.

Active Publication Date: 2015-03-04
THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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  • Description
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AI Technical Summary

Problems solved by technology

[0004] (1) The amount of calculation is large, the real-time performance is poor, and it is easily disturbed by environmental conditions;
[0005] (2) When a moving object passes through the overlapping area between spliced ​​video frames, ghosting, that is, the "ghosting" problem will occur
[0006] (3) Even if it is the same model of camera, in the same environment, the captured video frames will have chromatic aberration

Method used

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  • Video stitching method for sports scene

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Embodiment Construction

[0048] The present invention proposes a video mosaic method of moving scenes, through accurate registration of CIF algorithm, dynamic adjustment of connecting seams and color difference elimination method, better quality panoramic mosaic video of moving scenes is obtained. Digital video stitching is generally divided into two steps: space transformation matrix (also called homography matrix) calculation and video fusion. First, feature points are extracted for each video, and the affine or perspective transformation parameters relative to the reference plane are calculated through the coordinates of the matched feature point pairs. Then, the video is fused to the reference plane for overlapping areas, so as to obtain a panoramic video.

[0049] In the process of video stitching, if the homography matrix is ​​calculated for each frame of video, there are disadvantages such as low accuracy and poor real-time performance. So, apply the idea of ​​keyframes. On the premise that t...

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Abstract

The invention discloses a video stitching method for a sports scene. The video stitching method for the sports scene includes that firstly, using an improved congruence-transformation invariant-feature algorithm to solve common feature points in different videos to improve feature extraction speed; secondly, using an iteration method to calculate a minimum brightness difference route to dynamically regulate a stitching seam to process problems when a moving object passes through the overlapped region between stitching frames so as to avoid the double image of the moving object after passing the overlapped region; finally, using a feature-based video tone normalization method to eliminate the color difference between video frames. The video stitching method for the sports scene can be broadly used for the video monitoring for the large sports scene; the video stitching method for the sports scene improves the adaptation of the video stitching to different environments, solves the common problems of the video stitching and directly and greatly drives the improvement of the video stitching algorithm.

Description

technical field [0001] The invention relates to the technical field of video processing, and relates to a video splicing method, in particular to a video splicing method for moving scenes. Background technique [0002] In daily life, it is often necessary to obtain panoramic videos of wide viewing angles and moving scenes, but due to the limitations of physical factors in camera equipment, generally only partial videos of moving scenes can be obtained. Although some hardware devices, such as fisheye cameras and wide-angle lenses, can obtain panoramic videos, they are expensive and not suitable for widespread use. Video stitching technology has a wide range of application requirements in military monitoring, biomedicine, car navigation and other fields. Considering that it is usually necessary to deploy multiple cameras in large-scale sports scenes, this is the basis for panoramic stitching of sports scenes. In this way, the panoramic video monitoring motion scene using vid...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/00
Inventor 崔桐
Owner THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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