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Zero
import os | |
import time | |
from pathlib import Path | |
import torch | |
from torchvision.io import read_image | |
import torchvision.transforms.v2 as transforms | |
from torchvision.utils import make_grid | |
import gradio as gr | |
from diffusers import AutoencoderKL, EulerDiscreteScheduler | |
from transformers import SiglipImageProcessor, SiglipVisionModel | |
from huggingface_hub import hf_hub_download | |
import spaces | |
from esrgan_model import UpscalerESRGAN | |
from model import create_model | |
device = "cuda" | |
# Custom transform to pad images to square | |
class PadToSquare: | |
def __call__(self, img): | |
_, h, w = img.shape | |
max_side = max(h, w) | |
pad_h = (max_side - h) // 2 | |
pad_w = (max_side - w) // 2 | |
padding = (pad_w, pad_h, max_side - w - pad_w, max_side - h - pad_h) | |
return transforms.functional.pad(img, padding, padding_mode="edge") | |
# Timer decorator | |
def timer_func(func): | |
def wrapper(*args, **kwargs): | |
t0 = time.time() | |
result = func(*args, **kwargs) | |
print(f"{func.__name__} took {time.time() - t0:.2f} seconds") | |
return result | |
return wrapper | |
def load_model(model_class_name, model_filename, repo_id: str = "rizavelioglu/tryoffdiff"): | |
path_model = hf_hub_download(repo_id=repo_id, filename=model_filename, force_download=False) | |
state_dict = torch.load(path_model, weights_only=True, map_location=device) | |
state_dict = {k.replace('_orig_mod.', ''): v for k, v in state_dict.items()} | |
model = create_model(model_class_name).to(device) | |
# model = torch.compile(model) | |
model.load_state_dict(state_dict, strict=True) | |
return model.eval() | |
def generate_multi_image(input_image, garment_types, seed=42, guidance_scale=2.0, num_inference_steps=50, is_upscale=False): | |
label_map = {"Upper-Body": 0, "Lower-Body": 1, "Dress": 2} | |
valid_single = ["Upper-Body", "Lower-Body", "Dress"] | |
valid_tuple = ["Upper-Body", "Lower-Body"] | |
if not garment_types: | |
raise gr.Error("Please select at least one garment type.") | |
if len(garment_types) == 1 and garment_types[0] in valid_single: | |
selected, label_indices = garment_types, [label_map[garment_types[0]]] | |
elif sorted(garment_types) == sorted(valid_tuple): | |
selected, label_indices = valid_tuple, [label_map[t] for t in valid_tuple] | |
else: | |
raise gr.Error("Invalid selection. Choose one garment type or Upper-Body and Lower-Body together.") | |
batch_size = len(selected) | |
scheduler.set_timesteps(num_inference_steps) | |
generator = torch.Generator(device=device).manual_seed(seed) | |
x = torch.randn(batch_size, 4, 64, 64, generator=generator, device=device) | |
# Process inputs | |
cond_image = img_enc_transform(read_image(input_image)) | |
inputs = {k: v.to(device) for k, v in img_processor(images=cond_image, return_tensors="pt").items()} | |
cond_emb = img_enc(**inputs).last_hidden_state.to(device) | |
cond_emb = cond_emb.expand(batch_size, *cond_emb.shape[1:]) | |
uncond_emb = torch.zeros_like(cond_emb) if guidance_scale > 1 else None | |
label = torch.tensor(label_indices, device=device, dtype=torch.int64) | |
model = models["multi"] | |
with torch.autocast(device): | |
for t in scheduler.timesteps: | |
t = t.to(device) # Ensure t is on the correct device | |
if guidance_scale > 1: | |
noise_pred = model(torch.cat([x] * 2), t, torch.cat([uncond_emb, cond_emb]), torch.cat([label, label])).chunk(2) | |
noise_pred = noise_pred[0] + guidance_scale * (noise_pred[1] - noise_pred[0]) # Classifier-free guidance | |
else: | |
noise_pred = model(x, t, cond_emb, label) # Standard prediction | |
# Scheduler step | |
scheduler_output = scheduler.step(noise_pred, t, x) | |
x = scheduler_output.prev_sample | |
# Decode predictions from latent space | |
decoded = vae.decode(1 / vae.config.scaling_factor * scheduler_output.pred_original_sample).sample | |
images = (decoded / 2 + 0.5).cpu() | |
grid = make_grid(images, nrow=len(images), normalize=True, scale_each=True) | |
output_image = transforms.ToPILImage()(grid) | |
return upscaler(output_image) if is_upscale else output_image # Optionally upscale the output image | |
def generate_upper_image(input_image, seed=42, guidance_scale=2.0, num_inference_steps=50, is_upscale=False): | |
model = models["upper"] | |
scheduler.set_timesteps(num_inference_steps) | |
scheduler.timesteps = scheduler.timesteps.to(device) | |
generator = torch.Generator(device=device).manual_seed(seed) | |
x = torch.randn(1, 4, 64, 64, generator=generator, device=device) | |
# Process input image | |
cond_image = img_enc_transform(read_image(input_image)) | |
inputs = {k: v.to(device) for k, v in img_processor(images=cond_image, return_tensors="pt").items()} | |
cond_emb = img_enc(**inputs).last_hidden_state.to(device) | |
uncond_emb = torch.zeros_like(cond_emb) if guidance_scale > 1 else None | |
with torch.autocast(device): | |
for t in scheduler.timesteps: | |
t = t.to(device) # Ensure t is on the correct device | |
if guidance_scale > 1: # Classifier-free guidance | |
noise_pred = model(torch.cat([x] * 2), t, torch.cat([uncond_emb, cond_emb])).chunk(2) | |
noise_pred = noise_pred[0] + guidance_scale * (noise_pred[1] - noise_pred[0]) | |
else: # Standard prediction | |
noise_pred = model(x, t, cond_emb) | |
# Scheduler step | |
scheduler_output = scheduler.step(noise_pred, t, x) | |
x = scheduler_output.prev_sample | |
# Decode predictions from latent space | |
decoded = vae.decode(1 / vae.config.scaling_factor * scheduler_output.pred_original_sample).sample | |
images = (decoded / 2 + 0.5).cpu() | |
grid = make_grid(images, nrow=len(images), normalize=True, scale_each=True) | |
output_image = transforms.ToPILImage()(grid) | |
return upscaler(output_image) if is_upscale else output_image # Optionally upscale the output image | |
def generate_lower_image(input_image, seed=42, guidance_scale=2.0, num_inference_steps=50, is_upscale=False): | |
model = models["lower"] | |
scheduler.set_timesteps(num_inference_steps) | |
scheduler.timesteps = scheduler.timesteps.to(device) | |
generator = torch.Generator(device=device).manual_seed(seed) | |
x = torch.randn(1, 4, 64, 64, generator=generator, device=device) | |
# Process input image | |
cond_image = img_enc_transform(read_image(input_image)) | |
inputs = {k: v.to(device) for k, v in img_processor(images=cond_image, return_tensors="pt").items()} | |
cond_emb = img_enc(**inputs).last_hidden_state.to(device) | |
uncond_emb = torch.zeros_like(cond_emb) if guidance_scale > 1 else None | |
with torch.autocast(device): | |
for t in scheduler.timesteps: | |
t = t.to(device) # Ensure t is on the correct device | |
if guidance_scale > 1: # Classifier-free guidance | |
noise_pred = model(torch.cat([x] * 2), t, torch.cat([uncond_emb, cond_emb])).chunk(2) | |
noise_pred = noise_pred[0] + guidance_scale * (noise_pred[1] - noise_pred[0]) | |
else: # Standard prediction | |
noise_pred = model(x, t, cond_emb) | |
# Scheduler step | |
scheduler_output = scheduler.step(noise_pred, t, x) | |
x = scheduler_output.prev_sample | |
# Decode predictions from latent space | |
decoded = vae.decode(1 / vae.config.scaling_factor * scheduler_output.pred_original_sample).sample | |
images = (decoded / 2 + 0.5).cpu() | |
grid = make_grid(images, nrow=len(images), normalize=True, scale_each=True) | |
output_image = transforms.ToPILImage()(grid) | |
return upscaler(output_image) if is_upscale else output_image # Optionally upscale the output image | |
def generate_dress_image(input_image, seed=42, guidance_scale=2.0, num_inference_steps=50, is_upscale=False): | |
model = models["dress"] | |
scheduler.set_timesteps(num_inference_steps) | |
scheduler.timesteps = scheduler.timesteps.to(device) | |
generator = torch.Generator(device=device).manual_seed(seed) | |
x = torch.randn(1, 4, 64, 64, generator=generator, device=device) | |
# Process input image | |
cond_image = img_enc_transform(read_image(input_image)) | |
inputs = {k: v.to(device) for k, v in img_processor(images=cond_image, return_tensors="pt").items()} | |
cond_emb = img_enc(**inputs).last_hidden_state.to(device) | |
uncond_emb = torch.zeros_like(cond_emb) if guidance_scale > 1 else None | |
with torch.autocast(device): | |
for t in scheduler.timesteps: | |
t = t.to(device) # Ensure t is on the correct device | |
if guidance_scale > 1: # Classifier-free guidance | |
noise_pred = model(torch.cat([x] * 2), t, torch.cat([uncond_emb, cond_emb])).chunk(2) | |
noise_pred = noise_pred[0] + guidance_scale * (noise_pred[1] - noise_pred[0]) | |
else: # Standard prediction | |
noise_pred = model(x, t, cond_emb) | |
# Scheduler step | |
scheduler_output = scheduler.step(noise_pred, t, x) | |
x = scheduler_output.prev_sample | |
# Decode predictions from latent space | |
decoded = vae.decode(1 / vae.config.scaling_factor * scheduler_output.pred_original_sample).sample | |
images = (decoded / 2 + 0.5).cpu() | |
grid = make_grid(images, nrow=len(images), normalize=True, scale_each=True) | |
output_image = transforms.ToPILImage()(grid) | |
return upscaler(output_image) if is_upscale else output_image # Optionally upscale the output image | |
def create_multi_tab(): | |
description = r""" | |
<table class="description-table"> | |
<tr> | |
<td width="50%"> | |
In total, 4 models are available for generating garments (one in each tab):<br> | |
- <b>Multi-Garment</b>: Generate multiple garments (e.g., upper-body and lower-body) sequentially.<br> | |
- <b>Upper-Body</b>: Generate upper-body garments (e.g., tops, jackets, etc.).<br> | |
- <b>Lower-Body</b>: Generate lower-body garments (e.g., pants, skirts, etc.).<br> | |
- <b>Dress</b>: Generate dresses.<br> | |
</td> | |
<td width="50%"> | |
<b>How to use:</b><br> | |
1. Upload a reference image,<br> | |
2. Adjust the parameters as needed,<br> | |
3. Click "Generate" to create the garment(s).<br> | |
💡 Individual models perform slightly better than the multi-garment model, but the latter is more versatile. | |
</td> | |
</tr> | |
</table> | |
""" | |
examples = [ | |
["examples/048851_0.jpg", ["Upper-Body", "Lower-Body"], 42, 2.0, 20, False], | |
["examples/048851_0.jpg", ["Upper-Body"], 42, 2.0, 20, False], | |
["examples/048588_0.jpg", ["Upper-Body", "Lower-Body"], 42, 2.0, 20, False], | |
["examples/048588_0.jpg", ["Upper-Body"], 42, 2.0, 20, False], | |
["examples/048643_0.jpg", ["Upper-Body", "Lower-Body"], 42, 2.0, 20, False], | |
["examples/048643_0.jpg", ["Lower-Body"], 42, 2.0, 20, False], | |
["examples/048737_0.jpg", ["Dress"], 42, 2.0, 20, False], | |
["examples/048737_0.jpg", ["Upper-Body", "Lower-Body"], 42, 2.0, 20, False], | |
["examples/048690_0.jpg", ["Upper-Body", "Lower-Body"], 42, 2.0, 20, False], | |
["examples/048690_0.jpg", ["Lower-Body"], 42, 2.0, 20, False], | |
["examples/048691_0.jpg", ["Upper-Body", "Lower-Body"], 42, 2.0, 20, False], | |
["examples/048691_0.jpg", ["Upper-Body"], 42, 2.0, 20, False], | |
["examples/048732_0.jpg", ["Upper-Body", "Lower-Body"], 42, 2.0, 20, False], | |
["examples/048754_0.jpg", ["Upper-Body", "Lower-Body"], 42, 2.0, 20, False], | |
["examples/048799_0.jpg", ["Upper-Body", "Lower-Body"], 42, 2.0, 20, False], | |
["examples/048811_0.jpg", ["Upper-Body", "Lower-Body"], 42, 2.0, 20, False], | |
["examples/048821_0.jpg", ["Upper-Body", "Lower-Body"], 42, 2.0, 20, False], | |
["examples/048821_0.jpg", ["Upper-Body"], 42, 2.0, 20, False], | |
] | |
with gr.Blocks() as tab: | |
gr.Markdown(title) | |
gr.Markdown(description) | |
with gr.Row(): | |
with gr.Column(): | |
input_image = gr.Image(type="filepath", label="Reference Image", height=384, width=384) | |
with gr.Column(min_width=250): | |
garment_type = gr.CheckboxGroup(["Upper-Body", "Lower-Body", "Dress"], label="Select Garment Type", value=["Upper-Body", "Lower-Body"]) | |
seed = gr.Slider(value=42, minimum=0, maximum=1e6, step=1, label="Seed") | |
guidance_scale = gr.Slider(value=2.0, minimum=1, maximum=5, step=0.5, label="Guidance Scale(s)", info="No guidance at s=1.") | |
inference_steps = gr.Slider(value=20, minimum=5, maximum=1000, step=10, label="# of Inference Steps") | |
upscale = gr.Checkbox(value=False, label="Upscale Output", info="Upscale output by 4x (2048x2048) using an off-the-shelf model.") | |
submit_btn = gr.Button("Generate") | |
with gr.Column(): | |
output_image = gr.Image(type="pil", label="Generated Garment", height=384, width=384) | |
gr.Examples(examples=examples, inputs=[input_image, garment_type, seed, guidance_scale, inference_steps, upscale], outputs=output_image, fn=generate_multi_image, cache_examples=False, examples_per_page=2) | |
gr.Markdown(article) | |
submit_btn.click( | |
fn=generate_multi_image, | |
inputs=[input_image, garment_type, seed, guidance_scale, inference_steps, upscale], | |
outputs=output_image | |
) | |
return tab | |
def create_upper_tab(): | |
examples = [[f"examples/{img_filename}", 42, 2.0, 20, False] for img_filename in os.listdir("examples/") if img_filename.endswith("_0.jpg")] | |
examples += [ | |
["examples/00084_00.jpg", 42, 2.0, 20, False], | |
["examples/00254_00.jpg", 42, 2.0, 20, False], | |
["examples/00397_00.jpg", 42, 2.0, 20, False], | |
["examples/01320_00.jpg", 42, 2.0, 20, False], | |
["examples/02390_00.jpg", 42, 2.0, 20, False], | |
["examples/14227_00.jpg", 42, 2.0, 20, False], | |
] | |
with gr.Blocks() as tab: | |
gr.Markdown(title) | |
with gr.Row(): | |
with gr.Column(): | |
input_image = gr.Image(type="filepath", label="Reference Image", height=384, width=384) | |
with gr.Column(min_width=250): | |
seed = gr.Slider(value=42, minimum=0, maximum=1e6, step=1, label="Seed") | |
guidance_scale = gr.Slider(value=2.0, minimum=1, maximum=5, step=0.5, label="Guidance Scale(s)", info="No guidance at s=1.") | |
inference_steps = gr.Slider(value=20, minimum=5, maximum=1000, step=10, label="# of Inference Steps") | |
upscale = gr.Checkbox(value=False, label="Upscale Output", info="Upscale output by 4x (2048x2048) using an off-the-shelf model.") | |
submit_btn = gr.Button("Generate") | |
with gr.Column(): | |
output_image = gr.Image(type="pil", label="Generated Garment", height=384, width=384) | |
gr.Examples(examples=examples, inputs=[input_image, seed, guidance_scale, inference_steps, upscale], outputs=output_image, fn=generate_upper_image, cache_examples=False, examples_per_page=2) | |
gr.Markdown(article) | |
submit_btn.click( | |
fn=generate_upper_image, | |
inputs=[input_image, seed, guidance_scale, inference_steps, upscale], | |
outputs=output_image | |
) | |
return tab | |
def create_lower_tab(): | |
examples = [[f"examples/{img_filename}", 42, 2.0, 20, False] for img_filename in os.listdir("examples/") if img_filename.endswith("_0.jpg")] | |
with gr.Blocks() as tab: | |
gr.Markdown(title) | |
with gr.Row(): | |
with gr.Column(): | |
input_image = gr.Image(type="filepath", label="Reference Image", height=384, width=384) | |
with gr.Column(min_width=250): | |
seed = gr.Slider(value=42, minimum=0, maximum=1e6, step=1, label="Seed") | |
guidance_scale = gr.Slider(value=2.0, minimum=1, maximum=5, step=0.5, label="Guidance Scale(s)", info="No guidance at s=1.") | |
inference_steps = gr.Slider(value=20, minimum=5, maximum=1000, step=10, label="# of Inference Steps") | |
upscale = gr.Checkbox(value=False, label="Upscale Output", info="Upscale output by 4x (2048x2048) using an off-the-shelf model.") | |
submit_btn = gr.Button("Generate") | |
with gr.Column(): | |
output_image = gr.Image(type="pil", label="Generated Garment", height=384, width=384) | |
gr.Examples(examples=examples, inputs=[input_image, seed, guidance_scale, inference_steps, upscale], outputs=output_image, fn=generate_lower_image, cache_examples=False, examples_per_page=2) | |
gr.Markdown(article) | |
submit_btn.click( | |
fn=generate_lower_image, | |
inputs=[input_image, seed, guidance_scale, inference_steps, upscale], | |
outputs=output_image | |
) | |
return tab | |
def create_dress_tab(): | |
examples = [ | |
["examples/053480_0.jpg", 42, 2.0, 20, False], | |
["examples/048737_0.jpg", 42, 2.0, 20, False], | |
["examples/048811_0.jpg", 42, 2.0, 20, False], | |
["examples/053733_0.jpg", 42, 2.0, 20, False], | |
["examples/052606_0.jpg", 42, 2.0, 20, False], | |
["examples/053682_0.jpg", 42, 2.0, 20, False], | |
["examples/052036_0.jpg", 42, 2.0, 20, False], | |
["examples/052644_0.jpg", 42, 2.0, 20, False], | |
] | |
with gr.Blocks() as tab: | |
gr.Markdown(title) | |
with gr.Row(): | |
with gr.Column(): | |
input_image = gr.Image(type="filepath", label="Reference Image", height=384, width=384) | |
with gr.Column(min_width=250): | |
seed = gr.Slider(value=42, minimum=0, maximum=1e6, step=1, label="Seed") | |
guidance_scale = gr.Slider(value=2.0, minimum=1, maximum=5, step=0.5, label="Guidance Scale(s)", info="No guidance at s=1.") | |
inference_steps = gr.Slider(value=20, minimum=5, maximum=1000, step=10, label="# of Inference Steps") | |
upscale = gr.Checkbox(value=False, label="Upscale Output", info="Upscale output by 4x (2048x2048) using an off-the-shelf model.") | |
submit_btn = gr.Button("Generate") | |
with gr.Column(): | |
output_image = gr.Image(type="pil", label="Generated Garment", height=384, width=384) | |
gr.Examples(examples=examples, inputs=[input_image, seed, guidance_scale, inference_steps, upscale], outputs=output_image, fn=generate_dress_image, cache_examples=False, examples_per_page=2) | |
gr.Markdown(article) | |
submit_btn.click( | |
fn=generate_dress_image, | |
inputs=[input_image, seed, guidance_scale, inference_steps, upscale], | |
outputs=output_image | |
) | |
return tab | |
# UI elements | |
title = f""" | |
<div class='center-header' style="flex-direction: row; gap: 1.5em;"> | |
<h1 style="font-size:2.2em; margin-bottom:0.1em;">Virtual Try-Off Generator</h1> | |
<a href='https://rizavelioglu.github.io/tryoffdiff' style="align-self:center;"> | |
<button style="background-color:#1976d2; color:white; font-weight:bold; border:none; border-radius:4px; padding:4px 10px; font-size:1.1em; cursor:pointer;"> | |
🔗 Project page | |
</button> | |
</a> | |
</div> | |
""" | |
article = r""" | |
**Citation**<br>If you use this work, please give a star ⭐ and a citation: | |
``` | |
@article{velioglu2024tryoffdiff, | |
title = {TryOffDiff: Virtual-Try-Off via High-Fidelity Garment Reconstruction using Diffusion Models}, | |
author = {Velioglu, Riza and Bevandic, Petra and Chan, Robin and Hammer, Barbara}, | |
journal = {arXiv}, | |
year = {2024}, | |
note = {\url{https://doi.org/nt3n}} | |
} | |
@article{velioglu2025enhancing, | |
title = {Enhancing Person-to-Person Virtual Try-On with Multi-Garment Virtual Try-Off}, | |
author = {Velioglu, Riza and Bevandic, Petra and Chan, Robin and Hammer, Barbara}, | |
journal = {arXiv}, | |
year = {2025}, | |
note = {\url{https://doi.org/pn67}} | |
} | |
``` | |
""" | |
# Custom CSS for proper styling | |
custom_css = """ | |
.center-header { | |
display: flex; | |
align-items: center; | |
justify-content: center; | |
margin: 0 0 20px 0; | |
} | |
.center-header h1 { | |
margin: 0; | |
text-align: center; | |
} | |
.description-table { | |
width: 100%; | |
border-collapse: collapse; | |
} | |
.description-table td { | |
padding: 10px; | |
vertical-align: top; | |
} | |
""" | |
if __name__ == "__main__": | |
# Image Encoder and transforms | |
img_enc_transform = transforms.Compose( | |
[ | |
PadToSquare(), # Custom transform to pad the image to a square | |
transforms.Resize((512, 512)), | |
transforms.ToDtype(torch.float32, scale=True), | |
transforms.Normalize(mean=[0.5], std=[0.5]), | |
] | |
) | |
ckpt = "google/siglip-base-patch16-512" | |
img_processor = SiglipImageProcessor.from_pretrained(ckpt, do_resize=False, do_rescale=False, do_normalize=False) | |
img_enc = SiglipVisionModel.from_pretrained(ckpt).eval().to(device) | |
# Initialize VAE (only Decoder will be used) & Noise Scheduler | |
vae = AutoencoderKL.from_pretrained("stabilityai/sd-vae-ft-mse").eval().to(device) | |
scheduler = EulerDiscreteScheduler.from_pretrained( | |
hf_hub_download(repo_id="rizavelioglu/tryoffdiff", filename="scheduler/scheduler_config_v2.json", force_download=False) | |
) | |
scheduler.is_scale_input_called = True # suppress warning | |
# Upscaler model | |
upscaler = UpscalerESRGAN( | |
model_path=Path(hf_hub_download(repo_id="philz1337x/upscaler", filename="4x-UltraSharp.pth")), | |
device=torch.device(device), | |
dtype=torch.float32, | |
) | |
# Model configurations and loading | |
models = {} | |
model_paths = { | |
"upper": {"class_name": "TryOffDiffv2_single", "path": "tryoffdiffv2_upper.pth"}, # internal code: model_20250213_134430 | |
"lower": {"class_name": "TryOffDiffv2_single", "path": "tryoffdiffv2_lower.pth"}, # internal code: model_20250213_134130 | |
"dress": {"class_name": "TryOffDiffv2_single", "path": "tryoffdiffv2_dress.pth"}, # internal code: model_20250213_133554 | |
"multi": {"class_name": "TryOffDiffv2", "path": "tryoffdiffv2_multi.pth"}, # internal code: model_20250310_155608 | |
} | |
for name, cfg in model_paths.items(): | |
models[name] = load_model(cfg["class_name"], cfg["path"]) | |
torch.cuda.empty_cache() | |
# Create tabbed interface | |
demo = gr.TabbedInterface( | |
[create_multi_tab(), create_upper_tab(), create_lower_tab(), create_dress_tab()], | |
["Multi-Garment", "Upper-Body", "Lower-Body", "Dress"], | |
css=custom_css, | |
) | |
demo.launch(ssr_mode=False) | |