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Site data recovery method based on match video

A recovery method and scene data technology, applied in the field of computer vision, can solve the problem of many interference factors, achieve the effect of avoiding interference factors and improving data recovery effect

Pending Publication Date: 2021-12-24
HARBIN INST OF TECH
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Problems solved by technology

[0003] The present invention provides a field data recovery method based on game video to solve the problem of many interference factors in the visual method

Method used

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  • Site data recovery method based on match video
  • Site data recovery method based on match video
  • Site data recovery method based on match video

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Embodiment Construction

[0062] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0063] The goal of sports field data recovery is to establish the mapping relationship between video images and the coordinates of the real world sports field. The difficulty lies in the matching of the characteristics of the video field and the characteristics of the real sports field. Calibrate the camera parameters to restore the game field data from the video shot by a single PTZ camera, and realize the field data recovery of the game video.

[0064] A kind of...

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Abstract

The invention provides a site data recovery method based on match video. The method comprises the following steps: step 1, establishing a site standard template for the actual size of a site according to a sporting event needing to be calibrated; step 2, using a twin neural network training method to generate a training set image with a label according to the site standard template and the random camera parameters established in the step 1; step 3, extracting field contour features by using the trained neural network, and establishing a camera-feature database; and step 4, after an image to be calibrated is input, a target image is obtained by using a scene data recovery algorithm, and scene data recovery can be completed. The invention is used for solving the problem that a visual method is affected by many interference factors.

Description

technical field [0001] The invention belongs to the technical field of computer vision; in particular, it relates to a field data recovery method based on game video. Background technique [0002] Collecting athletes' training process through video shooting is an important means for coaches to control the quality of training. In addition, the main way to study opponents is to analyze the video of the game broadcast on TV. However, video images lacking scale information provide limited motion data, and it is difficult to form large-scale quantitative analysis. If the site data of the video shooting can be restored, the motion trajectory data can be obtained based on this, and the video can be digitized and analyzed, which is of great benefit to the analysis of the motion process, especially for a large number of third-party TV broadcast videos, which is of great significance. On the other hand, site data with scale information is also the basis for 3D reconstruction of spor...

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Application Information

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IPC IPC(8): G06K9/00G06K9/46G06K9/62G06N3/04G06N3/08G06T7/13G06T7/194G06T7/80
CPCG06T7/80G06T7/13G06T7/194G06N3/08G06T2207/20081G06T2207/20084G06N3/045G06F18/24147G06F18/214
Inventor 吴锐钱宇凡唐降龙严力朱明刘家锋刘松波黄庆成
Owner HARBIN INST OF TECH
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