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| import os | |
| from functools import partial | |
| from glob import glob | |
| from pathlib import Path as PythonPath | |
| import cv2 | |
| import torchvision.transforms.functional as TvF | |
| import torch | |
| import torch.nn as nn | |
| import numpy as np | |
| from inspect import isfunction | |
| from PIL import Image | |
| from lib import smplfusion | |
| from lib.smplfusion import share, router, attentionpatch, transformerpatch | |
| from lib.utils.iimage import IImage | |
| from lib.utils import poisson_blend | |
| from lib.models.sd2_sr import predict_eps_from_z_and_v, predict_start_from_z_and_v | |
| def refine_mask(hr_image, hr_mask, lr_image, sam_predictor): | |
| lr_mask = hr_mask.resize(512) | |
| x_min, y_min, rect_w, rect_h = cv2.boundingRect(lr_mask.data[0][:, :, 0]) | |
| x_min = max(x_min - 1, 0) | |
| y_min = max(y_min - 1, 0) | |
| x_max = x_min + rect_w + 1 | |
| y_max = y_min + rect_h + 1 | |
| input_box = np.array([x_min, y_min, x_max, y_max]) | |
| sam_predictor.set_image(hr_image.resize(512).data[0]) | |
| masks, _, _ = sam_predictor.predict( | |
| point_coords=None, | |
| point_labels=None, | |
| box=input_box[None, :], | |
| multimask_output=True, | |
| ) | |
| dilation_kernel = np.ones((13, 13)) | |
| original_object_mask = (np.sum(masks, axis=0) > 0).astype(np.uint8) | |
| original_object_mask = cv2.dilate(original_object_mask, dilation_kernel) | |
| sam_predictor.set_image(lr_image.resize(512).data[0]) | |
| masks, _, _ = sam_predictor.predict( | |
| point_coords=None, | |
| point_labels=None, | |
| box=input_box[None, :], | |
| multimask_output=True, | |
| ) | |
| dilation_kernel = np.ones((3, 3)) | |
| inpainted_object_mask = (np.sum(masks, axis=0) > 0).astype(np.uint8) | |
| inpainted_object_mask = cv2.dilate(inpainted_object_mask, dilation_kernel) | |
| lr_mask_masking = ((original_object_mask + inpainted_object_mask ) > 0).astype(np.uint8) | |
| new_mask = lr_mask.data[0] * lr_mask_masking[:, :, np.newaxis] | |
| new_mask = IImage(new_mask).resize(2048, resample = Image.BICUBIC) | |
| return new_mask | |
| def run(ddim, sam_predictor, lr_image, hr_image, hr_mask, prompt = 'high resolution professional photo', noise_level=20, | |
| blend_output = True, blend_trick = True, no_superres = False, | |
| dt = 50, seed = 1, guidance_scale = 7.5, negative_prompt = '', use_sam_mask = False): | |
| torch.manual_seed(seed) | |
| dtype = ddim.vae.encoder.conv_in.weight.dtype | |
| device = ddim.vae.encoder.conv_in.weight.device | |
| router.attention_forward = attentionpatch.default.forward_xformers | |
| router.basic_transformer_forward = transformerpatch.default.forward | |
| if use_sam_mask: | |
| with torch.no_grad(): | |
| hr_mask = refine_mask(hr_image, hr_mask, lr_image, sam_predictor) | |
| orig_h, orig_w = hr_image.torch().shape[2], hr_image.torch().shape[3] | |
| hr_image = hr_image.padx(256, padding_mode='reflect') | |
| hr_mask = hr_mask.padx(256, padding_mode='reflect').dilate(19) | |
| hr_mask_orig = hr_mask | |
| lr_image = lr_image.padx(64, padding_mode='reflect') | |
| lr_mask = hr_mask.resize((lr_image.torch().shape[2], lr_image.torch().shape[3]), resample = Image.BICUBIC).alpha().torch(vmin=0).to(device) | |
| lr_mask = TvF.gaussian_blur(lr_mask, kernel_size=19) | |
| if no_superres: | |
| output_tensor = lr_image.resize((hr_image.torch().shape[2], hr_image.torch().shape[3]), resample = Image.BICUBIC).torch().cuda() | |
| output_tensor = (255*((output_tensor.clip(-1, 1) + 1) / 2)).to(torch.uint8) | |
| output_tensor = poisson_blend( | |
| orig_img=hr_image.data[0][:orig_h, :orig_w, :], | |
| fake_img=output_tensor.cpu().permute(0, 2, 3, 1)[0].numpy()[:orig_h, :orig_w, :], | |
| mask=hr_mask_orig.alpha().data[0][:orig_h, :orig_w, :] | |
| ) | |
| return IImage(output_tensor[:orig_h, :orig_w, :]) | |
| # encode hr image | |
| with torch.no_grad(): | |
| hr_z0 = ddim.vae.encode(hr_image.torch().cuda().to(dtype=dtype, device=device)).mean * ddim.config.scale_factor | |
| assert hr_z0.shape[2] == lr_image.torch().shape[2] | |
| assert hr_z0.shape[3] == lr_image.torch().shape[3] | |
| unet_condition = lr_image.cuda().torch().to(memory_format=torch.contiguous_format).to(dtype=dtype, device=device) | |
| zT = torch.randn((1,4,unet_condition.shape[2], unet_condition.shape[3])).cuda().to(dtype=dtype, device=device) | |
| with torch.no_grad(): | |
| context = ddim.encoder.encode([negative_prompt, prompt]) | |
| noise_level = torch.Tensor(1 * [noise_level]).to(device=device).long() | |
| unet_condition, noise_level = ddim.low_scale_model(unet_condition, noise_level=noise_level) | |
| with torch.autocast('cuda'), torch.no_grad(): | |
| zt = zT | |
| for index,t in enumerate(range(999, 0, -dt)): | |
| _zt = zt if unet_condition is None else torch.cat([zt, unet_condition], 1) | |
| eps_uncond, eps = ddim.unet( | |
| torch.cat([_zt, _zt]).to(dtype=dtype, device=device), | |
| timesteps = torch.tensor([t, t]).to(device=device), | |
| context = context, | |
| y=torch.cat([noise_level]*2) | |
| ).chunk(2) | |
| ts = torch.full((zt.shape[0],), t, device=device, dtype=torch.long) | |
| model_output = (eps_uncond + guidance_scale * (eps - eps_uncond)) | |
| eps = predict_eps_from_z_and_v(ddim.schedule, zt, ts, model_output).to(dtype) | |
| z0 = predict_start_from_z_and_v(ddim.schedule, zt, ts, model_output).to(dtype) | |
| if blend_trick: | |
| z0 = z0 * lr_mask + hr_z0 * (1-lr_mask) | |
| zt = ddim.schedule.sqrt_alphas[t - dt] * z0 + ddim.schedule.sqrt_one_minus_alphas[t - dt] * eps | |
| with torch.no_grad(): | |
| output_tensor = ddim.vae.decode(z0.to(dtype) / ddim.config.scale_factor) | |
| if blend_output: | |
| output_tensor = (255*((output_tensor + 1) / 2).clip(0, 1)).to(torch.uint8) | |
| output_tensor = poisson_blend( | |
| orig_img=hr_image.data[0][:orig_h, :orig_w, :], | |
| fake_img=output_tensor.cpu().permute(0, 2, 3, 1)[0].numpy()[:orig_h, :orig_w, :], | |
| mask=hr_mask_orig.alpha().data[0][:orig_h, :orig_w, :] | |
| ) | |
| return IImage(output_tensor[:orig_h, :orig_w, :]) | |
| else: | |
| return IImage(output_tensor[:, :, :orig_h, :orig_w]) | |