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System for measuring motion distance of sphere by using 3D camera

A technology of motion distance and camera, applied in the field of image analysis, to achieve high precision and adaptability, direct measurement, and low energy consumption

Pending Publication Date: 2021-05-14
北京汇洋时代科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to solve the problem of automatically obtaining relevant motion information in sports, and provides a system for measuring the distance of a ball using a 3D camera. The present invention uses a camera ranging method to obtain motion distance information more conveniently, and analyze relevant sports information, can be installed and used in the actual sports environment

Method used

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  • System for measuring motion distance of sphere by using 3D camera
  • System for measuring motion distance of sphere by using 3D camera
  • System for measuring motion distance of sphere by using 3D camera

Examples

Experimental program
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Effect test

Embodiment 1

[0056] Such as figure 1 Shown, a kind of system that utilizes 3D camera to measure the moving distance of ball, comprises the 3D camera that is arranged on one side of sports ball area and is used for recording ball motion and transmits image and video, is connected with 3D camera and is used for fixing 3D camera on sports ball A support device on one side of the area and a data processing module connected to the 3D camera for receiving images from the 3D camera and performing image processing;

[0057] 3D camera includes at least 2 cameras;

[0058] The data processing module includes a camera overlooking fusion module, a sports ball area detection module, a detection and positioning sphere module, a sphere three-dimensional ranging module, a sphere tracking module and a movement distance calculation module;

[0059] The camera overlooking fusion module is used to fuse the ground overlooking view of each camera into a 3D camera ground overlooking view including all camera fi...

Embodiment 2

[0069] Such as Figure 1-6 Shown, a kind of system that utilizes 3D camera to measure the moving distance of ball, comprises the 3D camera that is arranged on one side of sports ball area and is used for recording ball motion and transmits image and video, is connected with 3D camera and is used for fixing 3D camera on sports ball A support device on one side of the area and a data processing module connected to the 3D camera for receiving images from the 3D camera and performing image processing;

[0070] 3D camera includes at least 2 cameras;

[0071] The data processing module includes a camera overlooking fusion module, a sports ball area detection module, a detection and positioning sphere module, a sphere three-dimensional ranging module, a sphere tracking module and a movement distance calculation module;

[0072] The camera overlooking fusion module is used to fuse the ground overlooking view of each camera into a 3D camera ground overlooking view including all camera...

Embodiment 3

[0095] Such as Figure 1-7 As shown, a system using a 3D camera to measure the moving distance of a sphere includes a binocular image acquisition device, including a fixed binocular camera and a tripod for height adjustment. After acquiring the image data, the image data goes through Figure 1-6 After data processing, the corresponding distance calculation results are obtained.

[0096] In a specific implementation, the image acquisition device acquires synchronous binocular 640P binocular images, and the video acquisition frequency of the dual cameras is 30 Hz.

[0097] After the binocular camera acquires the synchronized binocular image, the image is mapped from the original image to the top view of the ground. After the two cameras obtain their respective ground top views, calculate their sift features on the ground top views, match the features of the two ground top views, calculate the plane correspondence between the two top views, and complete the registration of the ...

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Abstract

The invention provides a system for measuring the motion distance of a sphere by using a 3D camera. The system comprises the 3D camera which is arranged at one side of a sports ball area and used for recording ball motion and transmitting images and videos, a supporting device which is connected with the 3D camera and used for fixing the 3D camera to one side of the sports ball area, and a data processing module which is connected with the 3D camera and used for receiving the images of the 3D camera and processing the images. A processing method of the data processing module comprises the steps of obtaining an original image and a video sequence, fusing to form a 3D camera ground top view, obtaining a background area and a motion area, obtaining a two-dimensional coordinate of a sphere target and calculating the three-dimensional coordinate, obtaining a single target area of the updated sphere target, and calculating the motion distance of the sphere target. According to the invention, a camera distance measuring method is utilized, so that the distance information of movement can be conveniently obtained, the related physical exercise information is analyzed, and the device can be installed and used in an actual physical exercise environment.

Description

technical field [0001] The invention relates to the technical field of image analysis, in particular to a system for measuring the moving distance of a sphere by using a 3D camera. Background technique [0002] In recent years, vision-based target detection, tracking and trajectory prediction methods have emerged rapidly and been widely used. [0003] 3D cameras are different from traditional 2D cameras that can only obtain flat images. The biggest feature is that they have obtained depth of field data. Through the combination of the plane coordinates (x, y) and the depth data z of the camera's distance from the point. The three-dimensional coordinates of each point in the image can be obtained, and the restoration of the real scene and scene reconstruction can be completed. [0004] Therefore, applying the 3D camera to the measurement of the moving distance of the sphere can achieve better results. Contents of the invention [0005] The present invention is to solve th...

Claims

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Application Information

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IPC IPC(8): G06T7/285G06T7/246G06T7/33G06T3/40G06T7/66G06T7/13G06T7/80
CPCG06T7/285G06T7/292G06T7/251G06T7/337G06T3/4038G06T7/66G06T7/13G06T7/85G06T2207/10021G06T2207/20221G06T2200/32
Inventor 戴晨
Owner 北京汇洋时代科技有限公司
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