import gradio as gr import jax import numpy as np import jax.numpy as jnp from flax.jax_utils import replicate from flax.training.common_utils import shard from PIL import Image from diffusers import FlaxStableDiffusionControlNetPipeline, FlaxControlNetModel import cv2 import os def image_grid(imgs, rows, cols): w, h = imgs[0].size grid = Image.new("RGB", size=(cols * w, rows * h)) for i, img in enumerate(imgs): grid.paste(img, box=(i % cols * w, i // cols * h)) return grid def create_key(seed=0): return jax.random.PRNGKey(seed) def canny_filter(image): gray_image = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY) blurred_image = cv2.GaussianBlur(gray_image, (5, 5), 0) edges_image = cv2.Canny(blurred_image, 50, 150) return edges_image # load control net and stable diffusion v1-5 controlnet, controlnet_params = FlaxControlNetModel.from_pretrained( "jax-diffusers-event/canny-coyo1m", dtype=jnp.float32 ) pipe, params = FlaxStableDiffusionControlNetPipeline.from_pretrained( "runwayml/stable-diffusion-v1-5", controlnet=controlnet, from_pt=True, dtype=jnp.float32 ) def infer(prompts, negative_prompts, image): params["controlnet"] = controlnet_params num_samples = jax.device_count() rng = create_key(0) rng = jax.random.split(rng, jax.device_count()) im = canny_filter(image) canny_image = Image.fromarray(im) prompt_ids = pipe.prepare_text_inputs([prompts] * num_samples) negative_prompt_ids = pipe.prepare_text_inputs([negative_prompts] * num_samples) processed_image = pipe.prepare_image_inputs([canny_image] * num_samples) p_params = replicate(params) prompt_ids = shard(prompt_ids) negative_prompt_ids = shard(negative_prompt_ids) processed_image = shard(processed_image) output = pipe( prompt_ids=prompt_ids, image=processed_image, params=p_params, prng_seed=rng, num_inference_steps=50, neg_prompt_ids=negative_prompt_ids, jit=True, ).images output_images = pipe.numpy_to_pil(np.asarray(output.reshape((num_samples,) + output.shape[-3:]))) output_images = image_grid(output_images, num_samples // 4, 4) return output_images gr.Interface(infer, inputs=["text", "text", "image"], outputs="gallery").launch()