Swing analyzing device, swing analyzing method, storage medium, and swing analyzing system

Abstract

A calculator matches a predetermined point in time of first time series information concerning a first swing and the predetermined point in time of second time series information concerning a second swing and calculates a divergence degree between the first time series information and the second time series information. A determiner determines, on the basis of the divergence degree between the first time series information and the second time series information, whether the first swing and the second swing are approximate to each other.

What is claimed is: 
     
         1 . A swing analyzing device comprising:
 a calculator configured to match a predetermined point in time of first time series information concerning a first swing and the predetermined point in time of second time series information concerning a second swing to thereby calculate a divergence degree between the first time series information and the second time series information; and   a determiner configured to determine, on the basis of the divergence degree, whether the first swing and the second swing are approximate to each other.   
     
     
         2 . The swing analyzing device according to  claim 1 , wherein the determiner determines, on the basis of whether the divergence degree is equal to or larger than a threshold set in advance, whether the first swing and the second swing are approximate to each other. 
     
     
         3 . The swing analyzing device according to  claim 1 , wherein the predetermined point in time is an impact. 
     
     
         4 . The swing analyzing device according to  claim 1 , wherein the divergence degree is a divergence degree calculated in a predetermined section. 
     
     
         5 . The swing analyzing device according to  claim 4 , wherein the predetermined section is at least a part of a downswing. 
     
     
         6 . The swing analyzing device according to  claim 4 , wherein the predetermined section is selectable. 
     
     
         7 . The swing analyzing device according to  claim 4 , wherein
 the determiner selects a plurality of the predetermined sections, and   a value of the threshold for one of the plurality of the predetermined sections is different from a value of the threshold for the other of the plurality of the predetermined sections.   
     
     
         8 . The swing analyzing device according to  claim 1 , wherein
 the first time series information is a coordinate of a track of the first swing,   the second time series information is a coordinate of a track of the second swing, and   the divergence degree is a distance between the coordinate of the track of the first swing and the coordinate of the track of the second swing.   
     
     
         9 . The swing analyzing device according to  claim 1 , wherein
 the first time series information is an angle of a ball hitting surface of an exercise instrument in the first swing,   the second time series information is an angle of a ball hitting surface of the exercise instrument in the second swing, and   the divergence degree is a difference between the angle of the ball hitting surface of the exercise instrument in the first swing and the angle of the ball hitting surface of the exercise instrument in the first swing.   
     
     
         10 . The swing analyzing device according to  claim 1 , further comprising an image generator configured to generate image data such that display forms are different in a portion where the first swing and the second swing are approximate to each other and a portion where the first swing and the second swing are not approximate to each other. 
     
     
         11 . A swing analyzing method comprising:
 matching a predetermined point in time of first time series information concerning a first swing and the predetermined point in time of second time series information concerning a second swing to thereby calculate a divergence degree between the first time series information and the second time series information; and   determining, on the basis of the divergence degree, whether the first swing and the second swing are approximate to each other.   
     
     
         12 . The swing analyzing method according to  claim 11 , wherein the determining includes determining, on the basis of whether the divergence degree is equal to or larger than a threshold set in advance, whether the first swing and the second swing are approximate to each other. 
     
     
         13 . The swing analyzing method according to  claim 11 , wherein the predetermined point in time is an impact. 
     
     
         14 . The swing analyzing method according to  claim 11 , wherein the divergence degree is a divergence degree calculated in a predetermined section. 
     
     
         15 . The swing analyzing method according to  claim 14 , wherein the predetermined section is at least a part of a downswing. 
     
     
         16 . The swing analyzing method according to  claim 14 , wherein the predetermined section is selectable. 
     
     
         17 . The swing analyzing method according to  claim 14 , wherein
 the determining includes selecting a plurality of the predetermined sections, and   a value of the threshold for one of the plurality of the predetermined sections is different from a value of the threshold for the other of the plurality of the predetermined sections.   
     
     
         18 . A storage medium having stored therein a computer program for causing a computer to execute:
 matching a predetermined point in time of first time series information concerning a first swing and the predetermined point in time of second time series information concerning a second swing to thereby calculate a divergence degree between the first time series information and the second time series information; and   determining, on the basis of the divergence degree, whether the first swing and the second swing are approximate to each other.   
     
     
         19 . A swing analyzing system comprising:
 the swing analyzing device according to  claim 1 ; and   an inertial sensor.   
     
     
         20 . A swing analyzing device that matches a predetermined point in time of first time series information concerning a first swing and the predetermined point in time of second time series information concerning a second swing to thereby calculate a divergence degree between the first time series information and the second time series information and determines, on the basis of the divergence degree, whether the first swing and the second swing are approximate to each other. 
     
     
         21 . The swing analyzing device according to  claim 20 , wherein the swing analyzing device determines, on the basis of whether the divergence degree is equal to or larger than a threshold set in advance, whether the first swing and the second swing are approximate to each other. 
     
     
         22 . The swing analyzing device according to  claim 20 , wherein the predetermined point in time is an impact. 
     
     
         23 . The swing analyzing device according to  claim 20 , wherein the divergence degree is a divergence degree calculated in a predetermined section.