import os import glob from PIL import Image import torch import yaml import cv2 import importlib import numpy as np from inpainter.util.tensor_util import resize_frames, resize_masks class BaseInpainter: def __init__(self, E2FGVI_checkpoint, device) -> None: """ E2FGVI_checkpoint: checkpoint of inpainter (version hq, with multi-resolution support) """ net = importlib.import_module('inpainter.model.e2fgvi_hq') self.model = net.InpaintGenerator().to(device) self.model.load_state_dict(torch.load(E2FGVI_checkpoint, map_location=device)) self.model.eval() self.device = device # load configurations with open("inpainter/config/config.yaml", 'r') as stream: config = yaml.safe_load(stream) self.neighbor_stride = config['neighbor_stride'] self.num_ref = config['num_ref'] self.step = config['step'] # sample reference frames from the whole video def get_ref_index(self, f, neighbor_ids, length): ref_index = [] if self.num_ref == -1: for i in range(0, length, self.step): if i not in neighbor_ids: ref_index.append(i) else: start_idx = max(0, f - self.step * (self.num_ref // 2)) end_idx = min(length, f + self.step * (self.num_ref // 2)) for i in range(start_idx, end_idx + 1, self.step): if i not in neighbor_ids: if len(ref_index) > self.num_ref: break ref_index.append(i) return ref_index def inpaint(self, frames, masks, dilate_radius=15, ratio=1): """ frames: numpy array, T, H, W, 3 masks: numpy array, T, H, W dilate_radius: radius when applying dilation on masks ratio: down-sample ratio Output: inpainted_frames: numpy array, T, H, W, 3 """ assert frames.shape[:3] == masks.shape, 'different size between frames and masks' assert ratio > 0 and ratio <= 1, 'ratio must in (0, 1]' masks = masks.copy() masks = np.clip(masks, 0, 1) kernel = cv2.getStructuringElement(2, (dilate_radius, dilate_radius)) masks = np.stack([cv2.dilate(mask, kernel) for mask in masks], 0) T, H, W = masks.shape # size: (w, h) if ratio == 1: size = None else: size = (int(W*ratio), int(H*ratio)) if size[0] % 2 > 0: size[0] += 1 if size[1] % 2 > 0: size[1] += 1 masks = np.expand_dims(masks, axis=3) # expand to T, H, W, 1 binary_masks = resize_masks(masks, size) frames = resize_frames(frames, size) # T, H, W, 3 # frames and binary_masks are numpy arrays h, w = frames.shape[1:3] video_length = T # convert to tensor imgs = (torch.from_numpy(frames).permute(0, 3, 1, 2).contiguous().unsqueeze(0).float().div(255)) * 2 - 1 masks = torch.from_numpy(binary_masks).permute(0, 3, 1, 2).contiguous().unsqueeze(0) imgs, masks = imgs.to(self.device), masks.to(self.device) comp_frames = [None] * video_length for f in range(0, video_length, self.neighbor_stride): neighbor_ids = [ i for i in range(max(0, f - self.neighbor_stride), min(video_length, f + self.neighbor_stride + 1)) ] ref_ids = self.get_ref_index(f, neighbor_ids, video_length) selected_imgs = imgs[:1, neighbor_ids + ref_ids, :, :, :] selected_masks = masks[:1, neighbor_ids + ref_ids, :, :, :] with torch.no_grad(): masked_imgs = selected_imgs * (1 - selected_masks) mod_size_h = 60 mod_size_w = 108 h_pad = (mod_size_h - h % mod_size_h) % mod_size_h w_pad = (mod_size_w - w % mod_size_w) % mod_size_w masked_imgs = torch.cat( [masked_imgs, torch.flip(masked_imgs, [3])], 3)[:, :, :, :h + h_pad, :] masked_imgs = torch.cat( [masked_imgs, torch.flip(masked_imgs, [4])], 4)[:, :, :, :, :w + w_pad] pred_imgs, _ = self.model(masked_imgs, len(neighbor_ids)) pred_imgs = pred_imgs[:, :, :h, :w] pred_imgs = (pred_imgs + 1) / 2 pred_imgs = pred_imgs.cpu().permute(0, 2, 3, 1).numpy() * 255 for i in range(len(neighbor_ids)): idx = neighbor_ids[i] img = pred_imgs[i].astype(np.uint8) * binary_masks[idx] + frames[idx] * ( 1 - binary_masks[idx]) if comp_frames[idx] is None: comp_frames[idx] = img else: comp_frames[idx] = comp_frames[idx].astype( np.float32) * 0.5 + img.astype(np.float32) * 0.5 inpainted_frames = np.stack(comp_frames, 0) return inpainted_frames.astype(np.uint8) if __name__ == '__main__': frame_path = glob.glob(os.path.join('/ssd1/gaomingqi/datasets/davis/JPEGImages/480p/parkour', '*.jpg')) frame_path.sort() mask_path = glob.glob(os.path.join('/ssd1/gaomingqi/datasets/davis/Annotations/480p/parkour', "*.png")) mask_path.sort() save_path = '/ssd1/gaomingqi/results/inpainting/parkour' if not os.path.exists(save_path): os.mkdir(save_path) frames = [] masks = [] for fid, mid in zip(frame_path, mask_path): frames.append(Image.open(fid).convert('RGB')) masks.append(Image.open(mid).convert('P')) frames = np.stack(frames, 0) masks = np.stack(masks, 0) # ---------------------------------------------- # how to use # ---------------------------------------------- # 1/3: set checkpoint and device checkpoint = '/ssd1/gaomingqi/checkpoints/E2FGVI-HQ-CVPR22.pth' device = 'cuda:6' # 2/3: initialise inpainter base_inpainter = BaseInpainter(checkpoint, device) # 3/3: inpainting (frames: numpy array, T, H, W, 3; masks: numpy array, T, H, W) # ratio: (0, 1], ratio for down sample, default value is 1 inpainted_frames = base_inpainter.inpaint(frames, masks, ratio=1) # numpy array, T, H, W, 3 # ---------------------------------------------- # end # ---------------------------------------------- # save for ti, inpainted_frame in enumerate(inpainted_frames): frame = Image.fromarray(inpainted_frame).convert('RGB') frame.save(os.path.join(save_path, f'{ti:05d}.jpg'))