Motion analyzing/advising system

• US 5,111,410 A
• Filed: 06/25/1990
• Issued: 05/05/1992
• Est. Priority Date: 06/23/1989
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Oh-Yoh Keisoku Kenkyusho
• Original Assignee: Kabushiki Kaisha Oh-Yoh Keisoku Kenkyusho
• Inventors: Suzuki, Takahito, Shibata, Tsutomu, Seki, Chikashi, Kuwajima, Shigesumi, Nakayama, Mizuo, Miyake, Kazushi
• Primary Examiner(s): Chin, Gary
• Assistant Examiner(s): ZANELLI, MICHAEL J
• Application Number:
  US07/543,127
• Time in Patent Office: 680 Days
• Field of Search: 364/551.01, 364/550, 364/559, 364/577, 364/413.01, 364/413.13, 364/518, 364/521, 364/410, 358/105, 358/107, 273/35 R, 273/183 R, 273/32 R, 340/323 R, 354/410, 354/412, 434/252, 434/258, 434/307
• US Class Current: 434/258
• CPC Class Codes: A61B 5/1122 of movement trajectories
• CPC Class Codes: A61B 5/1124 Determining motor skills
• CPC Class Codes: A61B 5/1127 using markers
• CPC Class Codes: A61B 5/7285 for synchronising or triggering a physiological measurement or image acquisition with a physiological event or waveform, e.g. an ECG signal A61B6/5205, A61B6/541, A61B8/5207, A61B8/543 take precedence
• CPC Class Codes: A63B 69/3629 Visual means not attached to the body for aligning, positioning the trainee's head or for detecting head movement, e.g. by parallax

Abstract

This invention relates to a motion diagnosis system which picks up motions of a subject and analyzes them, and is characterized by measuring address data at points of images thus picked up according to a trigger condition set in advance, displaying the result of the measurement in graphic images or stored images or in comparison with reference images, outputting the evaluation of such comparison to thereby enable measurement under flexible trigger conditions and analyzing the motions of the subject based on quantitative data in a manner easily understandable by the viewers and simple operation.

Claims

1. A motion analyzing/advising system comprising:

means to sample images of picked up motion of a subject and convert said images into digital signal indicative thereof,

measurement means to measure respective coordinates of plural motion points of said picked up motions, each of said plural motion points preset for analyzing said motions of the subject,

calculating means to extract coordinate data of said plural motion points from the converted digital signals,

trigger detector means to detect whether said motion points satisfy preset trigger conditions for starting, suspending or ending a measurement operation based on said coordinate data and to automatically provided an appropriate trigger signal when said preset trigger conditions are satisfied.

means to start, suspend or end the measurement operation based on said trigger signal provided by said trigger detector means,

data calculating means to extract typical motion behavior from the coordinate of each motion point obtained by said measurement means,

evaluation means to compare said typical motion behavior with a reference motion, and

advising means to select and output an advising comment in accordance with the evaluation, said advising comment based on an amount of difference between said typical motion behavior and said reference motion.

2. The motion analyzing/advising system as claimed in claim 1 further comprising means for storing plural evaluation references, and means to select one reference among said plural evaluation references and the means to compare compares the selected reference with each motion behavior.

3. The motion analyzing/advising system as claimed in claim 1 wherein said trigger detector means further comprises means to detect an angle of connected lines of motion points as said preset trigger condition.

4. The motion analyzing/advising system as claimed in claim 1 wherein said trigger detector means further comprises means to detect an angular velocity of connected lines of motion points as said preset trigger condition.

5. The motion analyzing/advising system as claimed in claim 1 further comprising image memory means to store said images, and means for displaying tracks of at least one motion point simultaneously with the images stored in said image memory means at a prescribed triggering time.

6. A motion analyzing/advising system comprising:

means to sample images of picked up motions of a subject and to digitize said motions into digital signals,

calculating means to extract coordinate data of said plural motion points from the converted digital signals,

trigger detector means to detect whether said motion points satisfy preset trigger conditions for starting, suspending or ending a measurement operation based on said coordinate data and to automatically provide an appropriate trigger signal when said preset trigger conditions are satisfied,

means to start, suspend or end the measurement operation based on a trigger signal provided by said trigger detector means,

display means to display the result of the measurement by said measurement means, said display means including;

a) means to display connected lines of the motion points on said display means and

b) means to display the lines for a plural number of frames on said display means.

7. The motion analyzing/advising system as claimed in claim 6 further comprising means to obtain coordinate data of motion points at preset points by interpolation, and means to display the connected lines obtained by said interpolation at a designated time after said trigger signal indicative of the end of said measurement operation, said connected lines being displayed on said display means with emphasis thereon.

8. The motion analyzing/advising system as claimed in claim 6 or 7 including an image memory means to store picked up images and means to superimpose the connected lines on the images stored in said image memory means.

9. A motion analyzing/advising system comprising:

means to sample images of picked up motions of a subject and convert said images into digital signals indicative thereof,

measurement means to measure respective coordinates of plural motion points of said picked up motions, each of said plural motion points preset for analyzing said motions of the subject.

data calculating means to extract typical motion behavior from the coordinate of each motion point obtained by said measurement means,

evaluation means to compare said typical motion behavior with a reference motion, and

advising means to select and output an advising comment in accordance with an evaluation done by the evaluation means, said advising comment based on an amount of difference between said typical motion behavior and said reference motion.

10. The motion analyzing/advising system as claimed in claim 9 further comprising means for storing plural evaluation references, and a means to diagnose which evaluation reference applies to each motion behavior.

11. The motion analyzing/advising system as claimed in claim 10 including means to select one reference among said evaluation references and the means to compare compares the selected reference with each motion behavior.

12. The motion analyzing/advising system as claimed in any one of the claims 9 through 11 wherein the data calculating means includes to interpolate each motion behavior at identical points to those of the reference data.

13. The motion analyzing/advising system as claimed in any one of the claims 9 through 11 wherein the measurement means includes means to track one or more motion point(s) over a designated displaying area and outputs the coordinates data of the motion point(s).

14. The motion analyzing/advising system as claimed in any one of the claims 9 through 11 wherein said advising means includes means for announcing the result of the evaluation in voice.

15. A system as in claim 9 wherein said advising means includes a plurality of preset advises stored therein, and means for selecting one of said advises based on said amount of difference between said typical motion behavior and said reference motion.

16. A motion analyzing/advising system which monitors images of motions of a subject, comprising:

means to sample and convert the images of the motions of a subject into digital signals indicative thereof,

calculating means to extract coordinate data of one or more motion points from the converted digital signals,

trigger detector means to detect whether said motion points satisfy preset trigger conditions for starting, suspending or ending a measurement operation based on said coordinate data and to automatically provide an appropriate trigger signal when said preset trigger conditions are satisfied, and

means to start, suspend or end the measurement operation based on said trigger signal provided by said trigger detector means.

17. The motion analyzing/advising system as claimed in claim 16 wherein said trigger detector means further comprises means to detect an angle of a connected line of motion points, said angle being one of said trigger conditions.

18. The motion analyzing/advising system as claimed in claim 16 wherein said trigger detector means further comprises means to detect an angular velocity of connected lines of motion points as said preset trigger condition.

19. The motion analyzing/advising system as claimed in claim 16 wherein said trigger detector means further comprises means to detect passing speed of the motion points over the designated area as said preset trigger condition.

20. The motion analyzing/advising system as claimed in any one of the claims 16 through 19 including means to store one or more frames of picked up images in frame memories with the trigger signals.

21. The motion analyzing/advising system as claimed in claim 20 including means to superimpose the stored image to a newly picked up image and to store the superimposed image in the frame memories.

22. The motion analyzing/advising system as claimed by any one of the claims 16 through 19 including means to reverse images and means to reverse coordinate data of motion points.

23. The motion measurement system as claimed in any one of the claims 16 through 19 including at least one memory means to store the results of measurement, and means to execute writing of a measurement result into said memory means with the trigger signals.