app.py

import spaces
import gradio as gr
import apply_net

import os
import sys
import cv2

sys.path.append('./')
import numpy as np
import argparse

import torch
import torchvision
import pytorch_lightning
from torch import autocast
from torchvision import transforms
from pytorch_lightning import seed_everything

from einops import rearrange 
from functools import partial
from omegaconf import OmegaConf
from PIL import Image
from typing import List
import matplotlib.pyplot as plt
from torchvision.transforms.functional import to_pil_image
from utils_mask import get_mask_location
from preprocess.humanparsing.run_parsing import Parsing
from preprocess.openpose.run_openpose import OpenPose
from ldm.util import instantiate_from_config, get_obj_from_str
from ldm.models.diffusion.ddim import DDIMSampler
from detectron2.data.detection_utils import convert_PIL_to_numpy,_apply_exif_orientation



if __name__ == "__main__":
    
    parser = argparse.ArgumentParser(description="Script for demo model")
    parser.add_argument("-b", "--base", type=str, default=r"configs/test_vitonhd.yaml")
    parser.add_argument("-c", "--ckpt", type=str, default=r"ckpt/hitonhd.ckpt")
    parser.add_argument("-s", "--seed", type=str, default=42)
    parser.add_argument("-d", "--ddim", type=str, default=16)
    opt = parser.parse_args()
    
    seed_everything(opt.seed)
    config = OmegaConf.load(f"{opt.base}")

    device = torch.device("cuda") if torch.cuda.is_available() else torch.device("cpu")

    model = instantiate_from_config(config.model)
    model.load_state_dict(torch.hub.load_state_dict_from_url("https://huggingface.co/basso4/hitonhd/resolve/main/hitonhd.ckpt")["state_dict"], strict=False)
    model.cuda()
    model.eval()
    model = model.to(device)
    sampler = DDIMSampler(model)

    # model = instantiate_from_config(config.model)
    # model.load_state_dict(torch.load(opt.ckpt, map_location="cpu")["state_dict"], strict=False)
    # model.cuda()
    # model.eval()
    # device = torch.device("cuda") if torch.cuda.is_available() else torch.device("cpu")
    # model = model.to(device)
    # sampler = DDIMSampler(model)
    
    precision_scope = autocast
    
    
    @spaces.GPU
    def start_tryon(dict_human,garm_img):
        #load human image
        human_img = dict_human['background'].convert("RGB").resize((768,1024))

        #mask
        tensor_transfrom = transforms.Compose(
                [
                    transforms.ToTensor(),
                    transforms.Normalize([0.5], [0.5]),
                ]
        )
    
        parsing_model = Parsing(0)
        openose_model = OpenPose(0)
        openose_model.preprocessor.body_estimation.model.to(device)
    
        keypoints = openose_model(human_img.resize((384,512)))
        model_parse, _ = parsing_model(human_img.resize((384,512)))
        mask, mask_gray = get_mask_location('hd', "upper_body", model_parse, keypoints)
        mask_cv = mask
        mask = mask.resize((768, 1024))
        mask_gray = (1-transforms.ToTensor()(mask)) * tensor_transfrom(human_img)
        mask_gray = to_pil_image((mask_gray+1.0)/2.0)
    
        #densepose    
        human_img_arg = _apply_exif_orientation(human_img.resize((384,512)))
        human_img_arg = convert_PIL_to_numpy(human_img_arg, format="BGR")
        args = apply_net.create_argument_parser().parse_args(('show', 
                                                            './configs/configs_densepose/densepose_rcnn_R_50_FPN_s1x.yaml', 
                                                            'https://dl.fbaipublicfiles.com/densepose/densepose_rcnn_R_50_FPN_s1x/165712039/model_final_162be9.pkl', 
                                                            'dp_segm', '-v', 
                                                            '--opts', 
                                                            'MODEL.DEVICE', 
                                                            'cuda'))
        # verbosity = getattr(args, "verbosity", None)
        pose_img = args.func(args,human_img_arg)    
        pose_img = pose_img[:,:,::-1]    
        pose_img = Image.fromarray(pose_img).resize((768,1024))
    
        #preprocessing image
        human_img = human_img.convert("RGB").resize((512, 512))
        human_img = torchvision.transforms.ToTensor()(human_img)
    
        garm_img = garm_img.convert("RGB").resize((224, 224))
        garm_img = torchvision.transforms.ToTensor()(garm_img)
    
        mask = mask.convert("L").resize((512,512))
        mask = torchvision.transforms.ToTensor()(mask)
        mask = 1-mask
    
        pose_img = pose_img.convert("RGB").resize((512, 512))
        pose_img = torchvision.transforms.ToTensor()(pose_img)
    
        #Normalize
        human_img = torchvision.transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5))(human_img)
        garm_img = torchvision.transforms.Normalize((0.48145466, 0.4578275, 0.40821073),
                                                    (0.26862954, 0.26130258, 0.27577711))(garm_img)
        pose_img = torchvision.transforms.Normalize((0.5, 0.5, 0.5), (0.5, 0.5, 0.5))(pose_img)
    
        #create inpaint & hint
        inpaint = human_img * mask
        hint = torchvision.transforms.Resize((512, 512))(garm_img)
        hint = torch.cat((hint, pose_img), dim=0)
    
        # {"human_img": human_img,     # [3, 512, 512]
        # "inpaint_image": inpaint,   # [3, 512, 512]
        # "inpaint_mask": mask,       # [1, 512, 512]
        # "garm_img": garm_img,       # [3, 224, 224]
        # "hint": hint,               # [6, 512, 512]
        # }
    
    
        with torch.no_grad():
            with precision_scope("cuda"):
                #loading data
                inpaint = inpaint.unsqueeze(0).to(torch.float16).to(device)
                reference = garm_img.unsqueeze(0).to(torch.float16).to(device)
                mask = mask.unsqueeze(0).to(torch.float16).to(device)
                hint = hint.unsqueeze(0).to(torch.float16).to(device)
                truth = human_img.unsqueeze(0).to(torch.float16).to(device)
    
                #data preprocessing
                encoder_posterior_inpaint = model.first_stage_model.encode(inpaint)
                z_inpaint = model.scale_factor * (encoder_posterior_inpaint.sample()).detach()
                mask_resize = torchvision.transforms.Resize([z_inpaint.shape[-2],z_inpaint.shape[-1]])(mask)
                test_model_kwargs = {}
                test_model_kwargs['inpaint_image'] = z_inpaint
                test_model_kwargs['inpaint_mask'] = mask_resize
                shape = (model.channels, model.image_size, model.image_size)
    
                #predict
                samples, _ = sampler.sample(S=opt.ddim,
                                                 batch_size=1,
                                                 shape=shape,
                                                 pose=hint,
                                                 conditioning=reference,
                                                 verbose=False,
                                                 eta=0,
                                                 test_model_kwargs=test_model_kwargs)
                samples = 1. / model.scale_factor * samples
                x_samples = model.first_stage_model.decode(samples[:,:4,:,:])
    
                x_samples_ddim = torch.clamp((x_samples + 1.0) / 2.0, min=0.0, max=1.0)
                x_samples_ddim = x_samples_ddim.cpu().permute(0, 2, 3, 1).numpy()
                x_checked_image=x_samples_ddim
                x_checked_image_torch = torch.from_numpy(x_checked_image).permute(0, 3, 1, 2)
                
                x_checked_image_torch = torch.nn.functional.interpolate(x_checked_image_torch.float(), size=[512,384])

                #apply seamlessClone technique here
                #img_base
                dict_human = dict_human.convert("RGB").resize((384, 512))
                dict_human = np.array(dict_human)
                dict_human = cv2.cvtColor(dict_human, cv2.COLOR_RGB2BGR)

                #img_output
                img_cv = rearrange(x_checked_image_torch[0], 'c h w -> h w c').cpu().numpy()
                img_cv = (img_cv * 255).astype(np.uint8)
                img_cv = cv2.cvtColor(img_cv, cv2.COLOR_RGB2BGR)
                
                #mask
                mask_cv = mask_cv.convert("L").resize((384,512))
                mask_cv = np.array(mask_cv)
                mask_cv = 255-mask_cv
    
                img_C = cv2.seamlessClone(dict_human, img_cv, mask_cv, (192,256), cv2.NORMAL_CLONE)
    
                
                return img_C, mask_gray


example_path = os.path.join(os.path.dirname(__file__), 'example')

garm_list = os.listdir(os.path.join(example_path,"cloth"))
garm_list_path = [os.path.join(example_path,"cloth",garm) for garm in garm_list]

human_list = os.listdir(os.path.join(example_path,"human"))
human_list_path = [os.path.join(example_path,"human",human) for human in human_list]

human_ex_list = []
for ex_human in human_list_path:
    ex_dict= {}
    ex_dict['background'] = ex_human
    ex_dict['layers'] = None
    ex_dict['composite'] = None
    human_ex_list.append(ex_dict)

##default human


image_blocks = gr.Blocks().queue()
with image_blocks as demo:
    gr.Markdown("## FPT_VTON 👕👔👚")
    gr.Markdown("Virtual Try-on with your image and garment image")
    with gr.Row():
        with gr.Column():
            imgs = gr.ImageEditor(sources='upload', type="pil", label='Human Picture or use Examples below', interactive=True)

            example = gr.Examples(
                inputs=imgs,
                examples_per_page=10,
                examples=human_list_path
            )
        
        with gr.Column():
            garm_img = gr.Image(label="Garment", sources='upload', type="pil")

            example = gr.Examples(
                inputs=garm_img,
                examples_per_page=8,
                examples=garm_list_path
            )
        
        with gr.Column():
            image_out_c = gr.Image(label="Output", elem_id="output-img",show_download_button=True)
            try_button = gr.Button(value="Try-on")

        # with gr.Column():
        #     image_out_c = gr.Image(label="Output", elem_id="output-img",show_download_button=False)

        with gr.Column():
            masked_img = gr.Image(label="Masked image output", elem_id="masked_img", show_download_button=True)


    try_button.click(fn=start_tryon, inputs=[imgs,garm_img], outputs=[image_out_c,masked_img], api_name='tryon')



image_blocks.launch()