| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a device for measuring a return remnant angle of a neck, capable of accurately measuring the return remnant angle of the neck without requiring marking of an irradiation point.SOLUTION: A computer 30: calculates the average coordinates of irradiation points on an irradiation surface 60a related to an image group acquired in a time zone for which a person to be measured faces the front and an image group acquired in a time zone for which the person to be measured faces the front after the person to be measured rotates the neck in a transverse direction from the front and reverses the neck to face the front again on the basis of the positions of the irradiation points in both the image groups; requires a pair of perpendicular legs orthogonal to a horizontal line H included in the irradiation surface 60a and passing through the center C of the irradiation surface 60a and passing through the points of both average coordinates, respectively; and calculates a return remnant angle of a neck on the basis of a distance between each of both legs and the center C of the irradiation surface 60a and a distance between a spot light irradiation device 10 and the centers C.</p> |
