import gradio as gr import numpy as np import os import matplotlib.pyplot as plt from utils.parse import filter_boxes, parse_input_with_negative, show_boxes from generation import run as run_ours from baseline import run as run_baseline import torch from shared import DEFAULT_SO_NEGATIVE_PROMPT, DEFAULT_OVERALL_NEGATIVE_PROMPT from examples import stage1_examples, stage2_examples, default_template, simplified_prompt, prompt_placeholder, layout_placeholder cuda_available = torch.cuda.is_available() print(f"Is CUDA available: {torch.cuda.is_available()}") if cuda_available: gpu_memory = torch.cuda.get_device_properties(torch.cuda.current_device()).total_memory low_memory = gpu_memory <= 16 * 1024 ** 3 print(f"CUDA device: {torch.cuda.get_device_name(torch.cuda.current_device())}. With GPU memory: {gpu_memory}. Low memory: {low_memory}") else: low_memory = False cache_examples = True default_num_inference_steps = 20 if low_memory else 50 def get_lmd_prompt(prompt, template=default_template): if prompt == "": prompt = prompt_placeholder if template == "": template = default_template return simplified_prompt.format(template=template, prompt=prompt) def get_layout_image(response): if response == "": response = layout_placeholder gen_boxes, bg_prompt, neg_prompt = parse_input_with_negative(response, no_input=True) fig = plt.figure(figsize=(8, 8)) # https://stackoverflow.com/questions/7821518/save-plot-to-numpy-array show_boxes(gen_boxes, bg_prompt, neg_prompt) # If we haven't already shown or saved the plot, then we need to # draw the figure first... fig.canvas.draw() # Now we can save it to a numpy array. data = np.frombuffer(fig.canvas.tostring_rgb(), dtype=np.uint8) data = data.reshape(fig.canvas.get_width_height()[::-1] + (3,)) plt.clf() return data def get_layout_image_gallery(response): return [get_layout_image(response)] def get_ours_image(response, overall_prompt_override="", seed=0, num_inference_steps=250, dpm_scheduler=True, use_autocast=False, fg_seed_start=20, fg_blending_ratio=0.1, frozen_step_ratio=0.5, attn_guidance_step_ratio=0.6, gligen_scheduled_sampling_beta=0.4, attn_guidance_scale=20, use_ref_ca=True, so_negative_prompt=DEFAULT_SO_NEGATIVE_PROMPT, overall_negative_prompt=DEFAULT_OVERALL_NEGATIVE_PROMPT, show_so_imgs=False, scale_boxes=False): if response == "": if overall_prompt_override == "": # Both are empty so generate a placeholder response = layout_placeholder else: raise gr.Error("Please paste ChatGPT response in the text box or select an example below to get started.") gen_boxes, bg_prompt, neg_prompt = parse_input_with_negative(response, no_input=True) gen_boxes = filter_boxes(gen_boxes, scale_boxes=scale_boxes) spec = { # prompt is unused 'prompt': '', 'gen_boxes': gen_boxes, 'bg_prompt': bg_prompt, 'extra_neg_prompt': neg_prompt } if dpm_scheduler: scheduler_key = "dpm_scheduler" else: scheduler_key = "scheduler" overall_max_index_step = int(attn_guidance_step_ratio * num_inference_steps) image_np, so_img_list = run_ours( spec, bg_seed=seed, overall_prompt_override=overall_prompt_override, fg_seed_start=fg_seed_start, fg_blending_ratio=fg_blending_ratio,frozen_step_ratio=frozen_step_ratio, use_autocast=use_autocast, so_gligen_scheduled_sampling_beta=gligen_scheduled_sampling_beta, overall_gligen_scheduled_sampling_beta=gligen_scheduled_sampling_beta, num_inference_steps=num_inference_steps, scheduler_key=scheduler_key, use_ref_ca=use_ref_ca, so_negative_prompt=so_negative_prompt, overall_negative_prompt=overall_negative_prompt, loss_scale=attn_guidance_scale, max_index_step=0, overall_loss_scale=attn_guidance_scale, overall_max_index_step=overall_max_index_step, ) images = [image_np] if show_so_imgs: images.extend([np.asarray(so_img) for so_img in so_img_list]) if cuda_available: print(f"Max GPU memory allocated: {torch.cuda.max_memory_allocated() / 1024 ** 3:.2f} GB") torch.cuda.reset_max_memory_allocated() return images def get_baseline_image(prompt, seed=0): if prompt == "": prompt = prompt_placeholder scheduler_key = "dpm_scheduler" num_inference_steps = 20 image_np = run_baseline(prompt, bg_seed=seed, scheduler_key=scheduler_key, num_inference_steps=num_inference_steps) return [image_np] duplicate_html = 'Duplicate Space' html = f"""

LLM-grounded Diffusion: Enhancing Prompt Understanding of Text-to-Image Diffusion Models with Large Language Models

LLM + Stable Diffusion => better prompt understanding in text2image generation 🤩

Project Page | 5-minute Blog Post | ArXiv Paper | Github | Cite our work if our ideas inspire you.

Tips:

1. If ChatGPT doesn't generate layout, add/remove the trailing space (added by default) and/or use GPT-4.

2. You can perform multi-round specification by giving ChatGPT follow-up requests (e.g., make the objects bigger or move the objects).

3. You can also try prompts in Simplified Chinese. You need to leave "prompt for overall image" empty in this case. If you want to try prompts in another language, translate the first line of last example to your language.

4. The diffusion model only runs 20 steps by default in this demo. You can make it run more steps to get higher quality images (or tweak frozen steps/guidance steps for better guidance and coherence).

5. Duplicate this space and add GPU or clone the space and run locally to skip the queue and run our model faster. (Currently we are using a T4 GPU on this space, which is quite slow, and you can add a A10G to make it 5x faster) {duplicate_html}


Implementation note (updated): In this demo, we provide a few modes: faster generation by disabling attention/per-box guidance. The standard version describes what is implemented for the paper. You can set GLIGEN guidance steps ratio to 0 to disable GLIGEN and use only the original SD weights.