Spot the ball

 作者:费廷币     |      日期:2019-03-08 10:08:09
By Barry Fox The American TV network Fox Sports thinks viewers will enjoy sport more if they can still see a computer-generated image of a ball when it disappears behind a scrum of players or goes behind a billboard (WO 98/32287). An infrared camera tracks the ball by sensing the light reflected off it. At the same time, the camera keeps an eye on at least one of several fixed infrared sources positioned around the stadium. This information is used to map the position and trajectory of the ball. If it disappears from view,