import cv2


class DetectorMovimiento:
    def __init__(self, umbral_pixeles=5000):
        self.bg = cv2.createBackgroundSubtractorMOG2(history=500, varThreshold=50)
        self.umbral = umbral_pixeles

    def hay_movimiento(self, frame) -> bool:
        mask = self.bg.apply(frame)
        return cv2.countNonZero(mask) > self.umbral