Abstract: Provided are a computer and an information processing method for accurately detecting a moving object in a captured image of the moving object. This computer includes: a memory that stores a computer program; and processing circuitry configured to, through execution of the computer program, generate a two-dimensional training image on which a moving object model and a background model placed in a three-dimensional virtual space are projected and which includes an afterimage according to movement of the moving object model, specify an in-image position, in the training image, of a moving object area including an image of at least one said moving object model, and use a combination of the training image and the in-image position of the moving object area as training data, to generate a detection model for detecting a moving object area from a captured image including an afterimage according to movement of a moving object.

Abstract: A training data generation unit 111 generates a plurality of sets of trajectory information each indicating position change with respect to time change during flight of a learning ball, respectively based on a plurality of different flight states which are states of the learning ball that is flying, and further generates a plurality of training data each including the flight state and the trajectory information associated with each other, and a model generation unit 112 generates an estimation model for estimating the flight state from the trajectory information, through learning using the plurality of training data.

Abstract: A reception unit 26a receives a still image of a spherical object captured by a camera 52 and information on the angle of view or the focal length of the camera 52 having captured the object, transmitted from a terminal (e.g., mobile communication terminal 50) including the camera 52. A calculation unit 28a calculates coordinates of four corners of a rectangle 210 enclosing the object from the still image of the object received by the reception unit 26a, and calculates direction vectors extending toward the object from the focal point of the lens of the camera 52, from the calculated coordinates of the four corners of the rectangle 210 enclosing the object and the angle of view or the focal length of the camera 52. An estimation unit 30a estimates three-dimensional coordinates of the center of the object, based on the direction vectors calculated by the calculation unit 28a.