As the target moves upward from the image bottom, the tracking box width gradually expands until the target is fully visible, then returns to its normal size. As the target moves downward from the lower boundary, the tracking box width gradually decreases from the moment the target enters the lower boundary. Could you tell me how to solve it?
As the target moves upward from the image bottom, the tracking box width gradually expands until the target is fully visible, then returns to its normal size. As the target moves downward from the lower boundary, the tracking box width gradually decreases from the moment the target enters the lower boundary. Could you tell me how to solve it?