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A method of counting balls based on audio information

A counting method and audio information technology, which is applied in the field of fitness and sports, can solve the problems of sensor damage and affect the counting result, and achieve the effect of strong practicability.

Inactive Publication Date: 2019-06-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Chinese patent document with the notification number CN 205198858U discloses a smart ball with the function of counting the number of shots, and the Chinese patent document with the notification number CN205198855U discloses a smart ball toy. To improve itself, by installing sensors on the ball to achieve the purpose of accurate counting, it is very likely to cause damage to the sensor during the process of shooting the ball and affect the counting results

Method used

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  • A method of counting balls based on audio information
  • A method of counting balls based on audio information
  • A method of counting balls based on audio information

Examples

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Embodiment

[0046] see figure 1 , the method for counting balls based on audio information of the present embodiment includes the following steps:

[0047] Obtaining step S1, obtaining the original video data (.avi) of the shooting action through the video recording device.

[0048] Extracting step S2, extracting audio data from original video data (.avi);

[0049] Filtering step S3, performing filtering processing on the audio data:

[0050] A discrete time series x with equal time step δt n′ The continuous wavelet transform of (n′=1,…,N) is defined as the wavelet function ψ 0 scaled and transformed x n′ Convolution of:

[0051]

[0052] In the formula, Ψ is the wavelet function to be selected, * represents the conjugate complex number, N is the total number of data in the time series, is a factor used to standardize the wavelet function so that the wavelet function has unit energy at each wavelet scale s. By transforming the wavelet scale s and localizing along the time index ...

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Abstract

The invention discloses a ball tapping counting method based on audio information, and belongs to the technical field of fitness exercises. The ball tapping counting method comprises the steps that sound recording equipment is utilized to conduct sound recording on the whole ball tapping process, high-definition videography equipment (such as a smart phone) can also be adopted to record the wholeball tapping process including ball tapping persons, and then the audio information is extracted; and an audio frequency wave pattern is plotted into a coordinate system, the time frame serves as theabscissa axis, and after natural bounce is ruled out, the number of ball tapping times is calculated according to the number of peak values of an audio oscillograph. The audio information is judged through mechanism analysis of auditory perception to achieve automatic counting of ball tapping, and precision is improved. According to the ball tapping counting method based on the audio information,automatic accurate counting can be achieved without adopting a special ball, immediate counting can be achieved, and video playback can also be conducted; and the ball tapping counting method has thehigher practicability, especially with wide adoption of the mobile videography equipment.

Description

technical field [0001] The invention relates to the technical field of fitness sports, in particular to a ball counting method based on audio information. Background technique [0002] Playing the ball is a healthy activity for children. It can not only promote the coordination of children's hand-eye movements and enhance their physical fitness, but also promote the balance of the left and right brains, cultivate children's good qualities such as endurance and persistence, and are beneficial to children. The development of children's play has an important role to play, so kindergartens around the world often organize such competitions. However, in the process of shooting the ball, special personnel are required to count and count. There are a large number of children in the kindergarten, and counting each person will waste the precious time of the teacher; and sometimes when the speed of shooting the ball is fast or people are not concentrating, counting errors are prone to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A63B71/06
CPCA63B71/06A63B2220/17A63B2220/808
Inventor 林峰余镇滔
Owner ZHEJIANG UNIV
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