def control_filter(self, control_dicts, cropped_icons_dict, plans, top_k):
    """
    Filters control items based on their scores and returns the top-k items.
    :param control_dicts: The dictionary of all control items.
    :param cropped_icons_dict: The dictionary of the cropped icons.
    :param plans: The plans to compare the control icons against.
    :param top_k: The number of top items to return.
    :return: The list of top-k control items based on their scores.
    """

    scores_items = []
    filtered_control_dict = {}

    for label, cropped_icon in cropped_icons_dict.items():
        score = self.control_filter_score(cropped_icon, plans)
        scores_items.append((score, label))
    topk_scores_items = heapq.nlargest(top_k, scores_items, key=lambda x: x[0])
    topk_labels = [scores_items[1] for scores_items in topk_scores_items]

    for label, control_item in control_dicts.items():
        if label in topk_labels:
            filtered_control_dict[label] = control_item
    return filtered_control_dict

def control_filter_score(self, control_icon, plans):
    """
    Calculates the score of a control icon based on its similarity to the given keywords.
    :param control_icon: The control icon image.
    :param plans: The plan to compare the control icon against.
    :return: The maximum similarity score between the control icon and the keywords.
    """

    plans_embedding = self.get_embedding(plans)
    control_icon_embedding = self.get_embedding(control_icon)
    return max(self.cos_sim(control_icon_embedding, plans_embedding).tolist()[0])