def METHOD_NAME(self, imageL, imageC, imageR):
    if (np.all(self.imageL_to_be_shown == imageL) == False or np.all(self.imageC_to_be_shown == imageC) == False or np.all(self.imageR_to_be_shown == imageR) == False):
        self.image_show_lock.acquire()
        self.imageL_to_be_shown = imageL
        self.imageC_to_be_shown = imageC
        self.imageR_to_be_shown = imageR
        self.image_to_be_shown_updated = True
        self.image_show_lock.release()