On this tutorial, we design a sensible image-generation workflow utilizing the Diffusers library. We begin by stabilizing the setting, then generate high-quality photographs from textual content prompts utilizing Secure Diffusion with an optimized scheduler. We speed up inference with a LoRA-based latent consistency method, information composition with ControlNet below edge conditioning, and at last carry out localized edits through inpainting. Additionally, we deal with real-world methods that stability picture high quality, velocity, and controllability.
!pip -q uninstall -y pillow Pillow || true
!pip -q set up --upgrade --force-reinstall "pillow<12.0"
!pip -q set up --upgrade diffusers transformers speed up safetensors huggingface_hub opencv-python
import os, math, random
import torch
import numpy as np
import cv2
from PIL import Picture, ImageDraw, ImageFilter
from diffusers import (
StableDiffusionPipeline,
StableDiffusionInpaintPipeline,
ControlNetModel,
StableDiffusionControlNetPipeline,
UniPCMultistepScheduler,
)
We put together a clear and suitable runtime by resolving dependency conflicts and putting in all required libraries. We guarantee picture processing works reliably by pinning the right Pillow model and loading the Diffusers ecosystem. We additionally import all core modules wanted for technology, management, and inpainting workflows.
def seed_everything(seed=42):
random.seed(seed)
np.random.seed(seed)
torch.manual_seed(seed)
torch.cuda.manual_seed_all(seed)
def to_grid(photographs, cols=2, bg=255):
if isinstance(photographs, Picture.Picture):
photographs = [images]
w, h = photographs[0].measurement
rows = math.ceil(len(photographs) / cols)
grid = Picture.new("RGB", (cols*w, rows*h), (bg, bg, bg))
for i, im in enumerate(photographs):
grid.paste(im, ((i % cols)*w, (i // cols)*h))
return grid
system = "cuda" if torch.cuda.is_available() else "cpu"
dtype = torch.float16 if system == "cuda" else torch.float32
print("system:", system, "| dtype:", dtype)We outline utility features to make sure reproducibility and to prepare visible outputs effectively. We set international random seeds so our generations stay constant throughout runs. We additionally detect the obtainable {hardware} and configure precision to optimize efficiency on the GPU or CPU.
seed_everything(7)
BASE_MODEL = "runwayml/stable-diffusion-v1-5"
pipe = StableDiffusionPipeline.from_pretrained(
BASE_MODEL,
torch_dtype=dtype,
safety_checker=None,
).to(system)
pipe.scheduler = UniPCMultistepScheduler.from_config(pipe.scheduler.config)
if system == "cuda":
pipe.enable_attention_slicing()
pipe.enable_vae_slicing()
immediate = "a cinematic photograph of a futuristic road market at nightfall, ultra-detailed, 35mm, volumetric lighting"
negative_prompt = "blurry, low high quality, deformed, watermark, textual content"
img_text = pipe(
immediate=immediate,
negative_prompt=negative_prompt,
num_inference_steps=25,
guidance_scale=6.5,
width=768,
top=512,
).photographs[0]We initialize the bottom Secure Diffusion pipeline and change to a extra environment friendly UniPC scheduler. We generate a high-quality picture straight from a textual content immediate utilizing rigorously chosen steerage and backbone settings. This establishes a robust baseline for subsequent enhancements in velocity and management.
LCM_LORA = "latent-consistency/lcm-lora-sdv1-5"
pipe.load_lora_weights(LCM_LORA)
strive:
pipe.fuse_lora()
lora_fused = True
besides Exception as e:
lora_fused = False
print("LoRA fuse skipped:", e)
fast_prompt = "a clear product photograph of a minimal smartwatch on a reflective floor, studio lighting"
fast_images = []
for steps in [4, 6, 8]:
fast_images.append(
pipe(
immediate=fast_prompt,
negative_prompt=negative_prompt,
num_inference_steps=steps,
guidance_scale=1.5,
width=768,
top=512,
).photographs[0]
)
grid_fast = to_grid(fast_images, cols=3)
print("LoRA fused:", lora_fused)
W, H = 768, 512
structure = Picture.new("RGB", (W, H), "white")
draw = ImageDraw.Draw(structure)
draw.rectangle([40, 80, 340, 460], define="black", width=6)
draw.ellipse([430, 110, 720, 400], define="black", width=6)
draw.line([0, 420, W, 420], fill="black", width=5)
edges = cv2.Canny(np.array(structure), 80, 160)
edges = np.stack([edges]*3, axis=-1)
canny_image = Picture.fromarray(edges)
CONTROLNET = "lllyasviel/sd-controlnet-canny"
controlnet = ControlNetModel.from_pretrained(
CONTROLNET,
torch_dtype=dtype,
).to(system)
cn_pipe = StableDiffusionControlNetPipeline.from_pretrained(
BASE_MODEL,
controlnet=controlnet,
torch_dtype=dtype,
safety_checker=None,
).to(system)
cn_pipe.scheduler = UniPCMultistepScheduler.from_config(cn_pipe.scheduler.config)
if system == "cuda":
cn_pipe.enable_attention_slicing()
cn_pipe.enable_vae_slicing()
cn_prompt = "a contemporary cafe inside, architectural render, delicate daylight, excessive element"
img_controlnet = cn_pipe(
immediate=cn_prompt,
negative_prompt=negative_prompt,
picture=canny_image,
num_inference_steps=25,
guidance_scale=6.5,
controlnet_conditioning_scale=1.0,
).photographs[0]We speed up inference by loading and fusing a LoRA adapter and reveal quick sampling with only a few diffusion steps. We then assemble a structural conditioning picture and apply ControlNet to information the structure of the generated scene. This permits us to protect composition whereas nonetheless benefiting from inventive textual content steerage.
masks = Picture.new("L", img_controlnet.measurement, 0)
mask_draw = ImageDraw.Draw(masks)
mask_draw.rectangle([60, 90, 320, 170], fill=255)
masks = masks.filter(ImageFilter.GaussianBlur(2))
inpaint_pipe = StableDiffusionInpaintPipeline.from_pretrained(
BASE_MODEL,
torch_dtype=dtype,
safety_checker=None,
).to(system)
inpaint_pipe.scheduler = UniPCMultistepScheduler.from_config(inpaint_pipe.scheduler.config)
if system == "cuda":
inpaint_pipe.enable_attention_slicing()
inpaint_pipe.enable_vae_slicing()
inpaint_prompt = "a glowing neon signal that claims 'CAFÉ', cyberpunk model, lifelike lighting"
img_inpaint = inpaint_pipe(
immediate=inpaint_prompt,
negative_prompt=negative_prompt,
picture=img_controlnet,
mask_image=masks,
num_inference_steps=30,
guidance_scale=7.0,
).photographs[0]
os.makedirs("outputs", exist_ok=True)
img_text.save("outputs/text2img.png")
grid_fast.save("outputs/lora_fast_grid.png")
structure.save("outputs/structure.png")
canny_image.save("outputs/canny.png")
img_controlnet.save("outputs/controlnet.png")
masks.save("outputs/masks.png")
img_inpaint.save("outputs/inpaint.png")
print("Saved outputs:", sorted(os.listdir("outputs")))
print("Carried out.")We create a masks to isolate a selected area and apply inpainting to change solely that a part of the picture. We refine the chosen space utilizing a focused immediate whereas preserving the remaining intact. Lastly, we save all intermediate and ultimate outputs to disk for inspection and reuse.
In conclusion, we demonstrated how a single Diffusers pipeline can evolve into a versatile, production-ready picture technology system. We defined the right way to transfer from pure text-to-image technology to quick sampling, structural management, and focused picture modifying with out altering frameworks or tooling. This tutorial highlights how we will mix schedulers, LoRA adapters, ControlNet, and inpainting to create controllable and environment friendly generative pipelines which are simple to increase for extra superior inventive or utilized use instances.
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