Virtual Camera Motion Planning Algorithm Based on Visual Trajectory Guidance

In order to make the virtual camera fit in with the real camera's motion track independently. In this paper, aiming at the problem that the virtual camera is easy to be affected by the three-dimensional (3D) virtual scene, resulting in position conflict, the virtual camera motion planning algorithm based on visual trajectory guidance is proposed to realize the local replanning and dynamic adjustment of the virtual camera trajectory. By introducing the dynamic window (DWA) algorithm, the real camera trajectory is taken as the global trajectory path of the virtual camera, and the global path is taken as the reference trajectory of the DWA evaluation function. Then, combined with the improved evaluation function, the virtual camera motion path is locally re-planned. The direction of the trajectory to be evaluated, the smoothness of the virtual camera motion and the ability of autonomous obstacle avoidance are fully considered in this algorithm, which improves the stability of the direction and the global fit of the virtual camera. The experimental results show that this algorithm can not only make the global motion path of the virtual camera fit the real camera trajectory to the maximum extent, but also can avoid the sudden change of motion path, scene collision and position conflict.