def _downscale_maps()

in video_processing/modules/optical_flow.py [0:0]


def _downscale_maps(flow_maps, downscale_size: int = 16):
    return [
        cv2.resize(
            flow,
            (downscale_size, int(flow.shape[0] * (downscale_size / flow.shape[1]))),
            interpolation=cv2.INTER_AREA,
        )
        for flow in flow_maps
    ]