|  | OpenCV
    4.1.0
    Open Source Computer Vision | 
| Functions | |
| double | calcGlobalOrientation (InputArray orientation, InputArray mask, InputArray mhi, double timestamp, double duration) | 
| Calculates a global motion orientation in a selected region. | |
| void | calcMotionGradient (InputArray mhi, OutputArray mask, OutputArray orientation, double delta1, double delta2, int apertureSize=3) | 
| Calculates a gradient orientation of a motion history image. | |
| void | segmentMotion (InputArray mhi, OutputArray segmask, std::vector< Rect > &boundingRects, double timestamp, double segThresh) | 
| Splits a motion history image into a few parts corresponding to separate independent motions (for example, left hand, right hand). | |
| void | updateMotionHistory (InputArray silhouette, InputOutputArray mhi, double timestamp, double duration) | 
| Updates the motion history image by a moving silhouette. | |
 1.8.3
 1.8.3