def main(): global best_rank1, best_mAP random.seed(args.seed) np.random.seed(args.seed) torch.manual_seed(args.seed) if not args.use_avai_gpus: os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu_devices use_gpu = torch.cuda.is_available() if args.use_cpu: use_gpu = False if not args.evaluate: sys.stdout = Logger( osp.join( args.save_dir, 'log_train{}.txt'.format(time.strftime('-%Y-%m-%d-%H-%M-%S')))) else: sys.stdout = Logger( osp.join( args.save_dir, 'log_test{}.txt'.format(time.strftime('-%Y-%m-%d-%H-%M-%S')))) writer = SummaryWriter(log_dir=args.save_dir, comment=args.arch) print("==========\nArgs:{}\n==========".format(args)) if use_gpu: print("Currently using GPU {}".format(args.gpu_devices)) cudnn.benchmark = False if 'resnet3dt' in args.arch else True torch.cuda.manual_seed_all(args.seed) else: print("Currently using CPU (GPU is highly recommended)") print("Initializing dataset {}".format(args.dataset)) dataset = data_manager.init_vidreid_dataset(root=args.root, name=args.dataset, split_id=args.split_id, use_pose=args.use_pose) transform_train = list() print('Transform:') if args.misalign_aug: print('+ Misalign Augmentation') transform_train.append(T.GroupMisAlignAugment()) if args.rand_crop: print('+ Random Crop') transform_train.append(T.GroupRandomCrop(size=(240, 120))) print('+ Resize to ({} x {})'.format(args.height, args.width)) transform_train.append(T.GroupResize((args.height, args.width))) if args.flip_aug: print('+ Random HorizontalFlip') transform_train.append(T.GroupRandomHorizontalFlip()) print('+ ToTensor') transform_train.append(T.GroupToTensor()) print( '+ Normalize with mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]' ) transform_train.append( T.GroupNormalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])) if args.rand_erase: print('+ Random Erasing') transform_train.append(T.GroupRandomErasing()) transform_train = T.Compose(transform_train) transform_test = T.Compose([ T.GroupResize((args.height, args.width)), T.GroupToTensor(), T.GroupNormalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]), ]) pin_memory = True if use_gpu else False trainloader = DataLoader( VideoDataset(dataset.train, seq_len=args.seq_len, sample=args.train_sample, transform=transform_train, training=True, pose_info=dataset.process_poses, num_split=args.num_split, num_parts=args.num_parts, num_scale=args.num_scale, pyramid_part=args.pyramid_part, enable_pose=args.use_pose), sampler=eval(args.train_sampler)(dataset.train, batch_size=args.train_batch, num_instances=args.num_instances), batch_size=args.train_batch, num_workers=args.workers, pin_memory=pin_memory, drop_last=True, ) queryloader = DataLoader( VideoDataset(dataset.query, seq_len=args.seq_len, sample=args.test_sample, transform=transform_test, pose_info=dataset.process_poses, num_split=args.num_split, num_parts=args.num_parts, num_scale=args.num_scale, pyramid_part=args.pyramid_part, enable_pose=args.use_pose), batch_size=args.test_batch, shuffle=False, num_workers=args.workers, pin_memory=pin_memory, drop_last=False, ) galleryloader = DataLoader( VideoDataset(dataset.gallery, seq_len=args.seq_len, sample=args.test_sample, transform=transform_test, pose_info=dataset.process_poses, num_split=args.num_split, num_parts=args.num_parts, num_scale=args.num_scale, pyramid_part=args.pyramid_part, enable_pose=args.use_pose), batch_size=args.test_batch, shuffle=False, num_workers=args.workers, pin_memory=pin_memory, drop_last=False, ) print("Initializing model: {}".format(args.arch)) model = models.init_model(name=args.arch, num_classes=dataset.num_train_pids, loss={'xent', 'htri'}, last_stride=args.last_stride, num_parts=args.num_parts, num_scale=args.num_scale, num_split=args.num_split, pyramid_part=args.pyramid_part, num_gb=args.num_gb, use_pose=args.use_pose, learn_graph=args.learn_graph, consistent_loss=args.consistent_loss, bnneck=args.bnneck, save_dir=args.save_dir) input_size = sum(calc_splits( args.num_split)) if args.pyramid_part else args.num_split input_size *= args.num_scale * args.seq_len num_params, flops = compute_model_complexity( model, input=[ torch.randn(1, args.seq_len, 3, args.height, args.width), torch.ones(1, input_size, input_size) ], verbose=True, only_conv_linear=False) print('Model complexity: params={:,} flops={:,}'.format(num_params, flops)) if args.label_smooth: criterion_xent = CrossEntropyLabelSmooth( num_classes=dataset.num_train_pids, use_gpu=use_gpu) else: criterion_xent = nn.CrossEntropyLoss() criterion_htri = TripletLoss(margin=args.margin, soft=args.soft_margin) param_groups = model.parameters() optimizer = init_optim(args.optim, param_groups, args.lr, args.weight_decay) scheduler = lr_scheduler.MultiStepLR(optimizer, milestones=args.stepsize, gamma=args.gamma) if args.warmup: scheduler = lr_scheduler.WarmupMultiStepLR(optimizer, milestones=args.stepsize, gamma=args.gamma, warmup_iters=10, warmup_factor=0.01) if args.load_weights and check_isfile(args.load_weights): # load pretrained weights but ignore layers that don't match in size checkpoint = torch.load(args.load_weights) pretrain_dict = checkpoint['state_dict'] model_dict = model.state_dict() pretrain_dict = { k: v for k, v in pretrain_dict.items() if k in model_dict and model_dict[k].size() == v.size() } model_dict.update(pretrain_dict) model.load_state_dict(model_dict) print("Loaded pretrained weights from '{}'".format(args.load_weights)) if args.resume and check_isfile(args.resume): print("Loaded checkpoint from '{}'".format(args.resume)) from functools import partial import pickle pickle.load = partial(pickle.load, encoding="latin1") pickle.Unpickler = partial(pickle.Unpickler, encoding="latin1") checkpoint = torch.load(args.resume, map_location=lambda storage, loc: storage, pickle_module=pickle) print('Loaded model weights') model.load_state_dict(checkpoint['state_dict']) if optimizer is not None and 'optimizer' in checkpoint: print('Loaded optimizer') optimizer.load_state_dict(checkpoint['optimizer']) if use_gpu: for state in optimizer.state.values(): for k, v in state.items(): if isinstance(v, torch.Tensor): state[k] = v.cuda() start_epoch = checkpoint['epoch'] + 1 print('- start_epoch: {}'.format(start_epoch)) best_rank1 = checkpoint['rank1'] print("- rank1: {}".format(best_rank1)) if 'mAP' in checkpoint: best_mAP = checkpoint['mAP'] print("- mAP: {}".format(best_mAP)) else: start_epoch = 0 if use_gpu: model = nn.DataParallel(model).cuda() if args.evaluate: print("Evaluate only") distmat = test(model, queryloader, galleryloader, args.pool, use_gpu, return_distmat=True) if args.visualize_ranks: visualize_ranked_results( distmat, dataset, save_dir=osp.join(args.save_dir, 'ranked_results'), topk=20, ) return start_time = time.time() train_time = 0 best_epoch = start_epoch print("==> Start training") for epoch in range(start_epoch, args.max_epoch): start_train_time = time.time() train(epoch, model, criterion_xent, criterion_htri, optimizer, trainloader, use_gpu, writer=writer) train_time += round(time.time() - start_train_time) if epoch >= args.zero_wd > 0: set_wd(optimizer, 0) for group in optimizer.param_groups: assert group['weight_decay'] == 0, '{} is not zero'.format( group['weight_decay']) scheduler.step(epoch) if (epoch + 1) > args.start_eval and args.eval_step > 0 and ( epoch + 1) % args.eval_step == 0 or (epoch + 1) == args.max_epoch: print("==> Test") rank1, mAP = test(model, queryloader, galleryloader, args.pool, use_gpu) is_best = rank1 > best_rank1 if is_best: best_rank1 = rank1 best_mAP = mAP best_epoch = epoch + 1 if use_gpu: state_dict = model.module.state_dict() else: state_dict = model.state_dict() save_checkpoint( { 'state_dict': state_dict, 'optimizer': optimizer.state_dict(), 'rank1': rank1, 'mAP': mAP, 'epoch': epoch, }, False, osp.join(args.save_dir, 'checkpoint_ep' + str(epoch + 1) + '.pth.tar')) writer.add_scalar(tag='acc/rank1', scalar_value=rank1, global_step=epoch + 1) writer.add_scalar(tag='acc/mAP', scalar_value=mAP, global_step=epoch + 1) print("==> Best Rank-1 {:.2%}, mAP: {:.2%}, achieved at epoch {}".format( best_rank1, best_mAP, best_epoch)) elapsed = round(time.time() - start_time) elapsed = str(datetime.timedelta(seconds=elapsed)) train_time = str(datetime.timedelta(seconds=train_time)) print( "Finished. Total elapsed time (h:m:s): {}. Training time (h:m:s): {}.". format(elapsed, train_time))
def main(): torch.manual_seed(args.seed) if not args.use_avai_gpus: os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu_devices use_gpu = torch.cuda.is_available() if args.use_cpu: use_gpu = False if not args.evaluate: sys.stdout = Logger(osp.join(args.save_dir, 'log_train.txt')) else: sys.stdout = Logger(osp.join(args.save_dir, 'log_test.txt')) print("==========\nArgs:{}\n==========".format(args)) if use_gpu: print("Currently using GPU {}".format(args.gpu_devices)) cudnn.benchmark = True torch.cuda.manual_seed_all(args.seed) else: print("Currently using CPU (GPU is highly recommended)") print("Initializing dataset {}".format(args.dataset)) dataset = data_manager.init_vidreid_dataset(root=args.root, name=args.dataset) transform_train = T.Compose([ T.Random2DTranslation(args.height, args.width), T.RandomHorizontalFlip(), T.ToTensor(), T.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]), ]) transform_test = T.Compose([ T.Resize((args.height, args.width)), T.ToTensor(), T.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]), ]) pin_memory = True if use_gpu else False # decompose tracklets into images new_train = [] for img_paths, pid, camid in dataset.train: for img_path in img_paths: new_train.append((img_path, pid, camid)) trainloader = DataLoader( ImageDataset(new_train, transform=transform_train), batch_size=args.train_batch, shuffle=True, num_workers=args.workers, pin_memory=pin_memory, drop_last=True, ) queryloader = DataLoader( VideoDataset(dataset.query, seq_len=args.seq_len, sample='evenly', transform=transform_test), batch_size=args.test_batch, shuffle=False, num_workers=args.workers, pin_memory=pin_memory, drop_last=False, ) galleryloader = DataLoader( VideoDataset(dataset.gallery, seq_len=args.seq_len, sample='evenly', transform=transform_test), batch_size=args.test_batch, shuffle=False, num_workers=args.workers, pin_memory=pin_memory, drop_last=False, ) print("Initializing model: {}".format(args.arch)) model = models.init_model(name=args.arch, num_classes=dataset.num_train_pids, loss={'xent'}) print("Model size: {:.3f} M".format(count_num_param(model))) if args.label_smooth: criterion = CrossEntropyLabelSmooth(num_classes=dataset.num_train_pids, use_gpu=use_gpu) else: criterion = nn.CrossEntropyLoss() optimizer = init_optim(args.optim, model.parameters(), args.lr, args.weight_decay) scheduler = lr_scheduler.MultiStepLR(optimizer, milestones=args.stepsize, gamma=args.gamma) if args.fixbase_epoch > 0: if hasattr(model, 'classifier') and isinstance(model.classifier, nn.Module): optimizer_tmp = init_optim(args.optim, model.classifier.parameters(), args.fixbase_lr, args.weight_decay) else: print( "Warn: model has no attribute 'classifier' and fixbase_epoch is reset to 0" ) args.fixbase_epoch = 0 if args.load_weights and check_isfile(args.load_weights): # load pretrained weights but ignore layers that don't match in size checkpoint = torch.load(args.load_weights) pretrain_dict = checkpoint['state_dict'] model_dict = model.state_dict() pretrain_dict = { k: v for k, v in pretrain_dict.items() if k in model_dict and model_dict[k].size() == v.size() } model_dict.update(pretrain_dict) model.load_state_dict(model_dict) print("Loaded pretrained weights from '{}'".format(args.load_weights)) if args.resume and check_isfile(args.resume): checkpoint = torch.load(args.resume) model.load_state_dict(checkpoint['state_dict']) args.start_epoch = checkpoint['epoch'] + 1 best_rank1 = checkpoint['rank1'] print("Loaded checkpoint from '{}'".format(args.resume)) print("- start_epoch: {}\n- rank1: {}".format(args.start_epoch, best_rank1)) if use_gpu: model = nn.DataParallel(model).cuda() if args.evaluate: print("Evaluate only") distmat = test(model, queryloader, galleryloader, args.pool, use_gpu, return_distmat=True) if args.visualize_ranks: visualize_ranked_results( distmat, dataset, save_dir=osp.join(args.save_dir, 'ranked_results'), topk=20, ) return start_time = time.time() train_time = 0 best_epoch = args.start_epoch print("==> Start training") if args.fixbase_epoch > 0: print( "Train classifier for {} epochs while keeping base network frozen". format(args.fixbase_epoch)) for epoch in range(args.fixbase_epoch): start_train_time = time.time() train(epoch, model, criterion, optimizer_tmp, trainloader, use_gpu, freeze_bn=True) train_time += round(time.time() - start_train_time) del optimizer_tmp print("Now open all layers for training") for epoch in range(args.start_epoch, args.max_epoch): start_train_time = time.time() train(epoch, model, criterion, optimizer, trainloader, use_gpu) train_time += round(time.time() - start_train_time) scheduler.step() if (epoch + 1) > args.start_eval and args.eval_step > 0 and ( epoch + 1) % args.eval_step == 0 or (epoch + 1) == args.max_epoch: print("==> Test") rank1 = test(model, queryloader, galleryloader, args.pool, use_gpu) is_best = rank1 > best_rank1 if is_best: best_rank1 = rank1 best_epoch = epoch + 1 if use_gpu: state_dict = model.module.state_dict() else: state_dict = model.state_dict() save_checkpoint( { 'state_dict': state_dict, 'rank1': rank1, 'epoch': epoch, }, is_best, osp.join(args.save_dir, 'checkpoint_ep' + str(epoch + 1) + '.pth.tar')) print("==> Best Rank-1 {:.1%}, achieved at epoch {}".format( best_rank1, best_epoch)) elapsed = round(time.time() - start_time) elapsed = str(datetime.timedelta(seconds=elapsed)) train_time = str(datetime.timedelta(seconds=train_time)) print( "Finished. Total elapsed time (h:m:s): {}. Training time (h:m:s): {}.". format(elapsed, train_time))
def main(): torch.manual_seed(args.seed) os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu_devices use_gpu = torch.cuda.is_available() if args.use_cpu: use_gpu = False if not args.evaluate: sys.stdout = Logger(osp.join(args.save_dir, 'log_train.txt')) else: sys.stdout = Logger(osp.join(args.save_dir, 'log_test.txt')) print("==========\nArgs:{}\n==========".format(args)) if use_gpu: print("Currently using GPU {}".format(args.gpu_devices)) cudnn.benchmark = True torch.cuda.manual_seed_all(args.seed) else: print("Currently using CPU (GPU is highly recommended)") print("Initializing dataset {}".format(args.dataset)) dataset = data_manager.init_vidreid_dataset(root=args.root, name=args.dataset) transform_train = T.Compose([ T.Random2DTranslation(args.height, args.width), T.RandomHorizontalFlip(), T.ToTensor(), T.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]), ]) transform_test = T.Compose([ T.Resize((args.height, args.width)), T.ToTensor(), T.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]), ]) pin_memory = True if use_gpu else False # decompose tracklets into images for image-based training new_train = [] for img_paths, pid, camid in dataset.train: for img_path in img_paths: new_train.append((img_path, pid, camid)) trainloader = DataLoader( ImageDataset(new_train, transform=transform_train), sampler=RandomIdentitySampler(new_train, args.train_batch, args.num_instances), batch_size=args.train_batch, num_workers=args.workers, pin_memory=pin_memory, drop_last=True, ) queryloader = DataLoader( VideoDataset(dataset.query, seq_len=args.seq_len, sample='evenly', transform=transform_test), batch_size=args.test_batch, shuffle=False, num_workers=args.workers, pin_memory=pin_memory, drop_last=False, ) galleryloader = DataLoader( VideoDataset(dataset.gallery, seq_len=args.seq_len, sample='evenly', transform=transform_test), batch_size=args.test_batch, shuffle=False, num_workers=args.workers, pin_memory=pin_memory, drop_last=False, ) print("Initializing model: {}".format(args.arch)) model = models.init_model(name=args.arch, num_classes=dataset.num_train_pids, loss={'xent', 'htri'}) print("Model size: {:.3f} M".format(count_num_param(model))) criterion_xent = nn.CrossEntropyLoss() criterion_htri = TripletLoss(margin=args.margin) criterion_KA = KALoss(margin=args.margin, same_margin = args.same_margin, use_auto_samemargin = args.use_auto_samemargin) cirterion_lifted = LiftedLoss(margin=args.margin) cirterion_batri = BA_TripletLoss(margin=args.margin) if args.use_auto_samemargin == True: G_params = [{'params': model.parameters(), 'lr': args.lr }, {'params': criterion_KA.auto_samemargin, 'lr': args.lr}] else : G_params = [para for _, para in model.named_parameters()] optimizer = init_optim(args.optim, G_params, args.lr, args.weight_decay) if args.load_weights: # load pretrained weights but ignore layers that don't match in size if check_isfile(args.load_weights): checkpoint = torch.load(args.load_weights) pretrain_dict = checkpoint['state_dict'] model_dict = model.state_dict() pretrain_dict = {k: v for k, v in pretrain_dict.items() if k in model_dict and model_dict[k].size() == v.size()} model_dict.update(pretrain_dict) model.load_state_dict(model_dict) print("Loaded pretrained weights from '{}'".format(args.load_weights)) if args.resume: if check_isfile(args.resume): checkpoint = torch.load(args.resume) model.load_state_dict(checkpoint['state_dict']) args.start_epoch = checkpoint['epoch'] rank1 = checkpoint['rank1'] print("Loaded checkpoint from '{}'".format(args.resume)) print("- start_epoch: {}\n- rank1: {}".format(args.start_epoch, rank1)) if use_gpu: model = nn.DataParallel(model).cuda() if args.evaluate: print("Evaluate only") distmat = test(model, queryloader, galleryloader, args.pool, use_gpu, return_distmat=True) if args.vis_ranked_res: visualize_ranked_results( distmat, dataset, save_dir=osp.join(args.save_dir, 'ranked_results'), topk=20, ) return start_time = time.time() train_time = 0 best_rank1 = -np.inf best_epoch = 0 print("==> Start training") for epoch in range(args.start_epoch, args.max_epoch): start_train_time = time.time() adjust_learning_rate(optimizer, epoch) train(epoch, model, cirterion_batri, cirterion_lifted, criterion_xent, criterion_htri, criterion_KA, optimizer, trainloader, use_gpu) train_time += round(time.time() - start_train_time) scheduler.step() if (epoch + 1) > args.start_eval and args.eval_step > 0 and (epoch + 1) % args.eval_step == 0 or (epoch + 1) == args.max_epoch: print("==> Test") rank1 = test(model, queryloader, galleryloader, args.pool, use_gpu) is_best = rank1 > best_rank1 if is_best: best_rank1 = rank1 best_epoch = epoch + 1 if use_gpu: state_dict = model.module.state_dict() else: state_dict = model.state_dict() save_checkpoint({ 'state_dict': state_dict, 'rank1': rank1, 'epoch': epoch, }, is_best, osp.join(args.save_dir, 'checkpoint_ep' + str(epoch + 1) + '.pth.tar')) print("==> Best Rank-1 {:.1%}, achieved at epoch {}".format(best_rank1, best_epoch)) elapsed = round(time.time() - start_time) elapsed = str(datetime.timedelta(seconds=elapsed)) train_time = str(datetime.timedelta(seconds=train_time)) print("Finished. Total elapsed time (h:m:s): {}. Training time (h:m:s): {}.".format(elapsed, train_time))