Abstract: A position obtaining device includes a processor. The processor, in response to a condition being met, derives a first attitude angle as an attitude angle of the device based on first light sources and positions thereof on an image obtained by a first camera; in response to the attitude angle of the device being known, derives a three-dimensional position of the device based on two or more second light sources and positions thereof on an image obtained by a second camera, and in response to a predetermined number of second light sources or more being captured in the image, derives the three-dimensional position and a second attitude angle as the attitude angle of the device; and integrates a result of the first attitude angle and a result of the three-dimensional position and the second attitude angle to estimate the attitude angle and the three-dimensional position of the device.

Abstract: A method provides on-site or remote viewers with real-time computer generated graphics simulating the racing venue and contestants by incorporating past and current data to forecast the ranking of racing contests. The method comprises the steps of drawing existing contestants by means of computer graphics and arranging the contestants along the start line of the existing racing venue; inputting said existing past data and existing current data just before starting of a race into all of the contestants; allowing the contestants to race on a display based on the respective data; and forecasting in advance actual race ranking from the states of said contestants and race results.