| 摘要 |
PROBLEM TO BE SOLVED: To accurately and quickly measure the stroke information of a swimmer during swimming. SOLUTION: This stroke information measuring device comprises an imaging part 4 outputting image data of every predetermined time, of the swimmer during swimming, pixel extracting part 18 for extracting pixel corresponding to an image of a body, a profile data creating part 20 for performing the operation of the pixel at least in one of the advancing direction of the swimmer and the direction vertical to the advancing direction and creating the profile data, a group of profile data creating part 22 successively arranging each profile datum by order of output to create a group of the profile data, an end point extracting part 24 extracting an end point of each profile datum, a stroke point extracting part 26 for extracting a stroke point on the basis of the periodical change of the waveform formed by each end point, and a calculating part 28 for calculating the stroke information on the basis of the stroke point.
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