Method for measuring flying height of standing long jump based on machine vision

A long-jump and high-altitude technology, applied in the field of image recognition, can solve the problems of harsh ranging conditions, cumbersome operation, and high cost, and achieve the effects of good robustness, cost reduction, and high-altitude distance recognition accuracy and precision.

Active Publication Date: 2021-06-15
安徽一视科技有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention aims to solve the problems of harsh ranging conditions, high cost, low precision and cumbersome operation in the existing height measurement method, and proposes a machine vi

Method used

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  • Method for measuring flying height of standing long jump based on machine vision
  • Method for measuring flying height of standing long jump based on machine vision
  • Method for measuring flying height of standing long jump based on machine vision

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Embodiment Construction

[0036] In this example, refer to figure 2 , a standing long jump height measurement method based on machine vision, which collects image information with a camera, characterizes the dynamic characteristics of human posture with the coordinates of key points of human bones, and uses the offset angle of the main trunk and arms of the human body and the deviation between the trunk and the vertical vector The angle shift is used as the starting or ending frame for judging, and the jumping trajectory is fitted by the least fitting method to obtain the flying height. Specifically, the steps are as follows:

[0037] Step 1. Processing the RGB image information of the standing long jump human body collected by the fixed-camera to obtain the key points of the human body posture;

[0038] Step 1.1, use a fixed camera to collect RGB image videos of standing long jump human bodies at different times and from different groups of people;

[0039] Step 1.2: Use the OpenPose neural network ...

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Abstract

The invention discloses a method for measuring the flying height of a standing long jump based on machine vision. The method comprises the following steps: 1, acquiring a standing long jump sample video by a camera, and obtaining human body key points of the standing long jump by using an OpenPose detection model; 2, constructing a trunk attitude vector according to the key points; 3, judging a take-off frame and a landing frame by using the human body trunk posture vector; 4, adopting different methods to measure the height according to the frame leakage condition at the highest position of the detection video; 5, adopting an OpenPose height direct measurement method for the frame leakage condition of the non-highest position; and 6, performing least square fitting of a quadratic function on a position point obtained through OpenPose according to the highest frame leakage condition, and performing reverse calculation of the flying height. According to the invention, the measurement of the vertical long jump height is realized by using machine vision, the cost of equipment and instruments is reduced, the method is not influenced by external factors such as weather and background, and the method has good robustness and detection accuracy.

Description

technical field [0001] The invention relates to the field of image recognition, in particular to a machine vision-based method for measuring the flying height of a standing long jump. Background technique [0002] Standing long jump is a must-test item for national physical health monitoring. It can effectively develop students' physical fitness such as speed, coordination, and strength, and improve the functions of the nervous system and cardiovascular system. Among the many factors that affect students' long jump performance, the take-off height of long jump is the most important. Therefore, it is very necessary to measure the flying height of the students in the standing long jump. [0003] Height measurement is a very important feature in pattern recognition. Besides standing long jump, it is widely used in video surveillance and traffic management. The traditional height measurement method is to place a ruler in the surveillance scene and estimate the height of the ta...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/46G06N3/02
CPCG06N3/02G06V40/23G06V20/41G06V10/462
Inventor 唐义平汪斌祖慈管树志侯建平李帷韬
Owner 安徽一视科技有限公司
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