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import numpy as np |
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import os, time, random |
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import argparse |
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import json |
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import torch.nn.functional as F |
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import torch |
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from torch.utils.data import Dataset, DataLoader |
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from torch.optim import lr_scheduler |
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from model.model import InvISPNet |
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from dataset.FiveK_dataset import FiveKDatasetTrain |
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from config.config import get_arguments |
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from utils.JPEG import DiffJPEG |
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os.system('nvidia-smi -q -d Memory |grep -A4 GPU|grep Free >tmp') |
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os.environ['CUDA_VISIBLE_DEVICES'] = str(np.argmax([int(x.split()[2]) for x in open('tmp', 'r').readlines()])) |
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os.system('rm tmp') |
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DiffJPEG = DiffJPEG(differentiable=True, quality=90).cuda() |
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parser = get_arguments() |
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parser.add_argument("--out_path", type=str, default="./exps/", help="Path to save checkpoint. ") |
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parser.add_argument("--resume", dest='resume', action='store_true', help="Resume training. ") |
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parser.add_argument("--loss", type=str, default="L1", choices=["L1", "L2"], help="Choose which loss function to use. ") |
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parser.add_argument("--lr", type=float, default=0.0001, help="Learning rate") |
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parser.add_argument("--aug", dest='aug', action='store_true', help="Use data augmentation.") |
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args = parser.parse_args() |
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print("Parsed arguments: {}".format(args)) |
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os.makedirs(args.out_path, exist_ok=True) |
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os.makedirs(args.out_path+"%s"%args.task, exist_ok=True) |
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os.makedirs(args.out_path+"%s/checkpoint"%args.task, exist_ok=True) |
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with open(args.out_path+"%s/commandline_args.yaml"%args.task , 'w') as f: |
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json.dump(args.__dict__, f, indent=2) |
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def main(args): |
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net = InvISPNet(channel_in=3, channel_out=3, block_num=8) |
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net.cuda() |
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if args.resume: |
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net.load_state_dict(torch.load(args.out_path+"%s/checkpoint/latest.pth"%args.task)) |
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print("[INFO] loaded " + args.out_path+"%s/checkpoint/latest.pth"%args.task) |
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optimizer = torch.optim.Adam(net.parameters(), lr=args.lr) |
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scheduler = lr_scheduler.MultiStepLR(optimizer, milestones=[50, 80], gamma=0.5) |
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print("[INFO] Start data loading and preprocessing") |
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RAWDataset = FiveKDatasetTrain(opt=args) |
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dataloader = DataLoader(RAWDataset, batch_size=args.batch_size, shuffle=True, num_workers=0, drop_last=True) |
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print("[INFO] Start to train") |
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step = 0 |
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for epoch in range(0, 300): |
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epoch_time = time.time() |
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for i_batch, sample_batched in enumerate(dataloader): |
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step_time = time.time() |
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input, target_rgb, target_raw = sample_batched['input_raw'].cuda(), sample_batched['target_rgb'].cuda(), \ |
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sample_batched['target_raw'].cuda() |
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reconstruct_rgb = net(input) |
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reconstruct_rgb = torch.clamp(reconstruct_rgb, 0, 1) |
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rgb_loss = F.l1_loss(reconstruct_rgb, target_rgb) |
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reconstruct_rgb = DiffJPEG(reconstruct_rgb) |
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reconstruct_raw = net(reconstruct_rgb, rev=True) |
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raw_loss = F.l1_loss(reconstruct_raw, target_raw) |
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loss = args.rgb_weight * rgb_loss + raw_loss |
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optimizer.zero_grad() |
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loss.backward() |
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optimizer.step() |
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print("task: %s Epoch: %d Step: %d || loss: %.5f raw_loss: %.5f rgb_loss: %.5f || lr: %f time: %f"%( |
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args.task, epoch, step, loss.detach().cpu().numpy(), raw_loss.detach().cpu().numpy(), |
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rgb_loss.detach().cpu().numpy(), optimizer.param_groups[0]['lr'], time.time()-step_time |
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)) |
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step += 1 |
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torch.save(net.state_dict(), args.out_path+"%s/checkpoint/latest.pth"%args.task) |
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if (epoch+1) % 10 == 0: |
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torch.save(net.state_dict(), args.out_path+"%s/checkpoint/%04d.pth"%(args.task,epoch)) |
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print("[INFO] Successfully saved "+args.out_path+"%s/checkpoint/%04d.pth"%(args.task,epoch)) |
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scheduler.step() |
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print("[INFO] Epoch time: ", time.time()-epoch_time, "task: ", args.task) |
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if __name__ == '__main__': |
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torch.set_num_threads(4) |
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main(args) |
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