Based on the principle of computer vision, the optical motion capture system monitors and tracks the target feature points from different angles through multiple high-speed cameras, and at the same time, combines the algorithm of bone solving to complete the motion capture. Theoretically, for any point in space, as long as it can be seen by more than two cameras at the same time, the 3D position of the point in space at this time can be determined. When the camera continuously shoots at a high frame rate, the motion trajectory of this point can be obtained from the image sequence.
From Ruili optical motion capture system
Optical motion capture and acquisition equipment is usually an optical camera, which is divided into two types: one is the joint information extracted based on two-dimensional image features or three-dimensional shape features as the detection target, and there is no need to attach marks to the object. This kind of system is collectively called unmarked point optical motion capture system; The other is to stick a marker on the object as the target detection point. This system is called optical motion capture of mark points.
Motion capture of unmarked points in Ruili vision
Optical dynamic capture has been widely used in many industries because of its stability and accuracy. In addition, inertial and laser dynamic capture are also widely used in specific fields. In addition, there are mechanical, acoustic, electromagnetic and other motion capture technologies, but these technologies can not reach the level of mainstream motion capture technology in cost, feasibility and accuracy, so they are rarely used in mass production.