The second Test between England and West Indies at Edgbaston marked the start of the detailed programme of slow bowler filming, which will continue throughout the ICC Champions Trophy, covering the slow bowlers of all participating teams, ICC said in a media release.
"Starting with Edgbaston, we are using high-speed cameras positioned behind the bowler's arm and square of the wicket to film slow bowlers actions' at 250 frames a second, which is five times faster than standard TV cameras.
The footage from both cameras is then combined and converted by a software programme to create a three-dimensional image of the action, together with the ability to analyse it in every detail," ICC general manager - cricket David Richardson, explained.
"This will provide us with a new generation of information that can be used in considering levels of tolerance for the accepted amount of extension at the elbow, either in terms of straightening or hyper-extension of the arm," Richardson said.
The ICC has commissioned Dr Paul Hurrion, a leading human movement specialist, to carry out the filming programme and provide interpretation of the data.