METHOD OF ANALYSING A VIDEO OF SPORTS MOTION
First Claim
1. A method of analysing a video, at least a portion of the video displaying a person performing a sports motion, the method comprising:
- receiving data representative of a number T of image frames constituting the video;
calculating, for each of a number TC of the image frames, one or more frame difference measures between the image frame and another image frame;
analysing the frame difference measures to identify a plurality of image frames that each show a key position of the person while performing the sports motion displayed in the video.
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Accused Products
Abstract
The invention is directed to a method, apparatus, system and computer program product for analysing video images of a sports motion and, in particular, to identification of key motion positions within a video and automatic extraction of segments of a video containing a sports motion. Video data displaying a sports motion comprises data representative of a number of image frames. For a number of image frames, one or more frame difference measures are calculated between the image frame and another image frame. The frame difference measures are analysed to identify a plurality of image frames that each show a key position of the sports motion. The segment of the video containing the sports motion showing the sports motion is between two of the image frames showing the key positions. Frame difference measures may be calculated based on pixel difference measures or optical flow techniques.
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Citations
50 Claims
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1. A method of analysing a video, at least a portion of the video displaying a person performing a sports motion, the method comprising:
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receiving data representative of a number T of image frames constituting the video; calculating, for each of a number TC of the image frames, one or more frame difference measures between the image frame and another image frame; analysing the frame difference measures to identify a plurality of image frames that each show a key position of the person while performing the sports motion displayed in the video. - View Dependent Claims (2, 4, 6, 9, 11, 14, 16, 17, 18, 19, 20, 21, 24, 40, 43)
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3. (canceled)
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5. (canceled)
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7. (canceled)
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8. (canceled)
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10. (canceled)
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12. (canceled)
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13. (canceled)
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15. (canceled)
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22. (canceled)
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23. (canceled)
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25-39. -39. (canceled)
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41-42. -42. (canceled)
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44. (canceled)
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45. An apparatus for analysing a video, at least a portion of the video displaying a person performing a sports motion, the apparatus comprising:
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a memory configured to store data representative of a number T of image frames; a processor configured to calculate, for each of a number TC of the image frames, one or more frame difference measures between the image frame and another image frame, the processor being further configured to; analyse the frame difference measures to identify a plurality of image frames that each show a key position of the person while performing the sports motion displayed in the video. - View Dependent Claims (46, 47)
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48-49. -49. (canceled)
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50. A computer program product which, when executed by a computer, causes the computer to perform a method comprising the steps of:
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receiving data representative of a number T of image frames, the image frames comprising at least a portion of a video displaying a person performing a sports motion; calculating, for each of a number TC of the image frames, one or more frame difference measures between the image frame and another image frame; analysing the frame difference measures to identify a plurality of image frames that each show a key position of the person while performing the sports motion displayed in the video.
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Specification