Marker-free movement capture system and a method for measuring movement of a human body

A marker-free movement capture system for measuring movement of a human body while performing a sport activity in natural field space characteristic for the sport, comprising:

• a first camera positioned at a first fixed location relative to an image capturing space, configured to capture image data of the human body carrying the sport equipment during the sport activity within the image capturing space,
• at least one second camera positioned at one or more second fixed locations relative to the image capturing space, configured to capture image data of the human body carrying the sport equipment during the sport activity simultaneous to the first camera,
• a computer system comprising a receiver and a processor for receiving and processing the image data collected by the first camera and the at least one second camera,
• wherein the system further comprises:
• at least one mobile carrier for carrying the first and the at least one second camera,
• a control unit,
• wherein the control unit is configured to instruct the at least one mobile carrier together with the cameras to move to the first natural field space,
• wherein, in response to detecting an action executed by the human within the natural field space, the image data captured by the first and at least one second camera, collected over a predefined time window encompassing both before and after the detected action, is provided as input to the computer system to calculate the human's movement.