ANALYSIS APPARATUS, ANALYSIS METHOD, AND RECORDING MEDIUM

• US 20170157480A1
• Filed: 10/03/2014
• Published: 06/08/2017
• Est. Priority Date: 12/05/2013
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: MATSUNAGA, HIDEYUKI, YAMASHITA, KOSEI
• Granted Patent: US 10,406,413 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A63B 2102/02 Tennis
• CPC Class Codes: A63B 2102/04 Badminton
• CPC Class Codes: A63B 2102/16 Table tennis
• CPC Class Codes: A63B 2102/18 Baseball, rounders or similar games
• CPC Class Codes: A63B 2102/32 Golf
• CPC Class Codes: A63B 2220/30 Speed
• CPC Class Codes: A63B 2220/40 Acceleration
• CPC Class Codes: A63B 2220/50 Force related parameters
• CPC Class Codes: A63B 2220/803 Motion sensors
• CPC Class Codes: A63B 2220/833 Sensors arranged on the exercise apparatus or sports implement
• CPC Class Codes: A63B 2220/89 Field sensors, e.g. radar systems
• CPC Class Codes: A63B 2225/50 Wireless data transmission, e.g. by radio transmitters or telemetry
• CPC Class Codes: A63B 24/0062 Monitoring athletic performances, e.g. for determining the work of a user on an exercise apparatus, the completed jogging or cycling distance
• CPC Class Codes: A63B 49/00 Stringed rackets, e.g. for tennis strings therefor A63B51/00
• CPC Class Codes: A63B 60/002 Resonance frequency related characteristics
• CPC Class Codes: A63B 60/46 Measurement devices associated with golf clubs, bats, rackets or the like for measuring physical parameters relating to sporting activity, e.g. baseball bats with impact indicators or bracelets for measuring the golf swing
• CPC Class Codes: G01P 15/18 in two or more dimensions
• CPC Class Codes: G01P 3/12 by making use of a system excited by impact
• CPC Class Codes: G06F 2218/00 Aspects of pattern recognition specially adapted for signal processing
• CPC Class Codes: G06F 2218/10 : by analysing the shape of a waveform, e.g. extracting parameters relating to peaks
• CPC Class Codes: G06N 20/00 : Machine learning
• CPC Class Codes: G06V 40/23 : Recognition of whole body movements, e.g. for sport training

Abstract

[Object] To analyze a contact phenomenon between objects can with a simpler configuration.

[Solution] Provided is an analysis apparatus including: an acquisition unit configured to acquire vibration data showing a vibration generated in a first object by having a second object come into contact with a first position on the first object; a first analysis processing unit configured to specify the first position by comparing a vibration characteristic shown by the vibration data, and a vibration characteristic defined for each position where the second object may come into contact with the first object; and a second analysis processing unit configured to estimate a velocity after the contact of the second object based on a velocity of the first object and the first position.

Claims

1. An analysis apparatus, comprising:

an acquisition unit configured to acquire vibration data showing a vibration generated in a first object by having a second object come into contact with a first position on the first object;

a first analysis processing unit configured to specify the first position by comparing a vibration characteristic shown by the vibration data, and a vibration characteristic defined for each position where the second object may come into contact with the first object; and

a second analysis processing unit configured to estimate a velocity after the contact of the second object based on a velocity of the first object and the first position.

2. The analysis apparatus according to claim 1,

wherein the second analysis processing unit estimates the velocity after the contact of the second object based on an effective mass of the first object at the first position.

3. The analysis apparatus according to claim 1,

wherein the second analysis processing unit calculates an impulse given to the second object by the first object based on the vibration characteristic defined for the first position and the vibration data, and estimates the velocity after the contact of the second object based on the impulse.

4. The analysis apparatus according to claim 3,

wherein the second analysis processing unit calculates the impulse from the vibration data by an inverse operation using a transfer function included in the vibration characteristic defined for the first position.

5. The analysis apparatus according to claim 1,

wherein the acquisition unit additionally acquires motion data showing a displacement and rotation of the first object in a section including the contact, and

wherein the second analysis processing unit estimates the velocity after the contact of the second object based on a posture of the first object estimated based on the motion data.

6. The analysis apparatus according to claim 5,

wherein the second analysis processing unit estimates the velocity after the contact of the second object based on a velocity direction at a time of the contact of the first object estimated based on the posture.

7. The analysis apparatus according to claim 5,

wherein the second analysis processing unit estimates a rotation amount after the contact of the second object based on a velocity direction at a time of the contact of the first object estimated based on the posture.

8. The analysis apparatus according to claim 1,

wherein the second analysis processing unit selects or calculates a restitution coefficient at the contact in accordance with the first position.

9. The analysis apparatus according to claim 8,

wherein the second analysis processing unit calculates the restitution coefficient based on an effective mass of the first object at the first position.

10. The analysis apparatus according to claim 1, further comprising:

a third analysis processing unit configured to estimate a track after the contact of the second object based on the velocity after the contact of the second object.

11. An analysis method, comprising:

acquiring vibration data showing a vibration generated in a first object by having a second object come into contact with a first position on the first object;

specifying the first position by comparing a vibration characteristic shown by the vibration data, and a vibration characteristic defined for each position where the second object may come into contact with the first object; and

estimating a velocity after the contact of the second object based on a velocity of the first object and the first position.

12. A recording medium having a program stored therein, the program causing a computer to implement:

a function of acquiring vibration data showing a vibration generated in a first object by having a second object come into contact with a first position on the first object;

a function of specifying the first position by comparing a vibration characteristic shown by the vibration data, and a vibration characteristic defined for each position where the second object may come into contact with the first object; and

a function of estimating a velocity after the contact of the second object based on a velocity of the first object and the first position.