According to one aspect of the present invention, there is provided a method for measuring ball spin, the method comprising the steps of: detecting a plurality of dimples in each of a plurality of images of a ball for which physical quantities are to be measured; and measuring physical quantities related to spin of the ball with reference to a relationship between properties of the plurality of dimples detected in a first image among the plurality of images and properties of the plurality of dimples detected in a second image among the plurality of images.