I don't feel like I can achieve the effect of the published image. I just increased the resolution, but the image is not high-definition. Is it because I set the parameters incorrectly?

[hjj-lmx]

def __init__(self, device):
    model_info = {
        "model_path": os.path.join("gfpgan", "weights", "RealESRGAN_x4plus.pth"),
        "scale": 4,
        "model": lambda: RRDBNet(num_in_ch=3, num_out_ch=3, num_feat=64, num_block=23, num_grow_ch=32, scale=4)
    }
    self.model = RealESRGANer(
        scale=model_info["scale"],
        model_path=model_info["model_path"],
        model=model_info["model"](),
        half=True,
        tile=256,
        tile_pad=10,
        pre_pad=10,
        device=device,
    )