def load_label(csv_file):
    """
    Label file is a csv file using number to mark gesture for each frame
    example content: 0,0,0,2,2,2,2,2,0,0,0,0,0
    :param csv_file:
    :return: list of int
    """
    with open(csv_file, 'r') as label_file:
        labels = label_file.read()

    labels = labels.split(",")
    labels = [int(l) for l in labels]
    # Labels is a list of int, representing gesture for each frame
    return labels