def get_mean_std(data_set):
    """Get mean and standard deviation of RGB values for the given dataset."""
    value_scale = 255
    mean_cs = [0.485, 0.456, 0.406]
    mean_cs = [item * value_scale for item in mean_cs]
    std_cs = [0.229, 0.224, 0.225]
    std_cs = [item * value_scale for item in std_cs]

    mean_bdd = [0.3132649, 0.31416275, 0.29762544]
    mean_bdd = [item * value_scale for item in mean_bdd]
    std_bdd = [0.4244708279394972, 0.4158931970801661, 0.39015395151921883]
    std_bdd = [item * value_scale for item in std_bdd]

    if data_set == 'cs':
        mean = mean_cs
        std = std_cs
    elif data_set == 'bdd':
        mean = mean_bdd
        std = std_bdd
    else:
        raise ValueError(f'args.mean_std value not supported: {data_set}')
    return mean, std