.   image (torch.FloatTensor, PIL.Image.Image, np.ndarray, List[torch.FloatTensor], List[PIL.Image.Image], or List[np.ndarray]) —
Image or tensor representing an image batch to be upscaled.   num_inference_steps (int, optional, defaults to 50) —
The number of denoising steps. More denoising steps usually lead to a higher quality image at the
expense of slower inference.   guidance_scale (float, optional, defaults to 7.5) —
A higher guidance sca