Stride length measurement device
First Claim
1. A stride length measurement device for measuring stride length of a subject running or walking over a floor surface, comprising:
- a marker arranged on said floor surface;
image pickup means that picks up an image including said marker and a foot of said subject; and
stride length measurement means that, using said image that has thus been picked up, detects landing on said floor surface of one foot and acquires the positional relationship of this foot and said marker when the foot lands, and also detects landing on said floor surface of the other foot and acquires the positional relationship of this foot and said marker when this foot lands, and acquires the stride length of said subject on the basis of these two positional relationships.
1 Assignment
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Accused Products
Abstract
Markers 24 are provided on a belt 20 of a treadmill 10. A video camera 50 for stride length is used to pick up an image including the foot 2 of a subject 1 running or walking over the running surface 26 of belt 20 and also markers 24. Landing of foot 2 on belt 20 is detected using this image. The positional relationship of marker 24 and one foot 2 when this foot 2 lands and also the positional relationship of marker 24 and the other foot 2 when this foot 2 lands are respectively acquired. These two positional relationships are then used to acquire the stride length of subject 1. thereby it is possible to acquire the stride length directly and with high precision, irrespective of the speed of walking/running of subject 1 or the speed of belt 20.
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Citations
11 Claims
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1. A stride length measurement device for measuring stride length of a subject running or walking over a floor surface, comprising:
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a marker arranged on said floor surface;
image pickup means that picks up an image including said marker and a foot of said subject; and
stride length measurement means that, using said image that has thus been picked up, detects landing on said floor surface of one foot and acquires the positional relationship of this foot and said marker when the foot lands, and also detects landing on said floor surface of the other foot and acquires the positional relationship of this foot and said marker when this foot lands, and acquires the stride length of said subject on the basis of these two positional relationships. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification