<P> The system makes use of a combination of motion sensors mounted on the broadcast cameras to record what they are viewing , and / or the use of match moving computer graphics technology and an enhanced version of chroma key or `` green screen '' technology . </P>
<P> The system makes use of a combination of motion sensors mounted on the broadcast cameras to record what they are viewing , and / or the use of match moving computer graphics technology and an enhanced version of chroma key or `` green screen '' technology . </P>
how do they project images on football field
how do they project images on football field
a combination of motion sensors mounted on the broadcast cameras to record what they are viewing , and / or the use of match moving computer graphics technology and an enhanced version of chroma key or `` green screen '' technology
a combination of motion sensors mounted on the broadcast cameras to record what they are viewing , and / or the use of match moving computer graphics technology and an enhanced version of chroma key or `` green screen '' technology