Function opencv::optflow::update_motion_history

pub fn update_motion_history(
    silhouette: &dyn ToInputArray, 
    mhi: &mut dyn ToInputOutputArray, 
    timestamp: f64, 
    duration: f64
) -> Result<()>

Updates the motion history image by a moving silhouette.

Parameters

• silhouette: Silhouette mask that has non-zero pixels where the motion occurs.
• mhi: Motion history image that is updated by the function (single-channel, 32-bit floating-point).
• timestamp: Current time in milliseconds or other units.
• duration: Maximal duration of the motion track in the same units as timestamp .

The function updates the motion history image as follows:

That is, MHI pixels where the motion occurs are set to the current timestamp , while the pixels where the motion happened last time a long time ago are cleared.

The function, together with calcMotionGradient and calcGlobalOrientation , implements a motion templates technique described in Davis97 and Bradski00 .