def sssss(test_image_dir, test_gt_dir, model):
print('begin test')
print('begin test', file=terminal_file)
testset = ImageDataset(
img_dir=test_image_dir,
gt_dir=test_gt_dir,
train=False,
transform=transforms.Compose([
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
]),
)
test_loader = torch.utils.data.DataLoader(testset,
shuffle=False,
batch_size=args.batch_size,
num_workers=args.workers)
model.eval()
mae = 0
mse = 0
gt_sum = 0
predict_sum = 0
with torch.no_grad():
for i, (img, gt_density_map) in enumerate(test_loader):
img = img.to(args.device)
gt_density_map = gt_density_map.to(args.device)
predict_density_map = model(img)
gt_count = np.sum(gt_density_map.data.cpu().numpy())
predict_count = np.sum(predict_density_map.data.cpu().numpy())
mae += abs(gt_count - predict_count)
mse += ((gt_count - predict_count) * (gt_count - predict_count))
gt_sum += gt_count
predict_sum += predict_count
mae = mae / len(test_loader.dataset)
mse = np.sqrt(mse / len(test_loader.dataset))
gt_sum = gt_sum / len(test_loader.dataset)
predict_sum = predict_sum / len(test_loader.dataset)
return mae, mse, gt_sum, predict_sum
def train(train_image_dir, train_gt_dir, model, criterion, optimizer, epoch):
print('begin train')
print('begin train', file=terminal_file)
losses = AverageMeter()
trainset = ImageDataset(
img_dir=train_image_dir,
gt_dir=train_gt_dir,
train=True,
transform=transforms.Compose([
transforms.ToTensor(),
transforms.Normalize(mean=[0.485, 0.456, 0.406],
std=[0.229, 0.224, 0.225])
]),
)
train_loader = torch.utils.data.DataLoader(trainset,
shuffle=True,
batch_size=args.batch_size,
num_workers=args.workers)
print('epoch %d, processed %d samples, dataset %s, lr %.10f' %
(epoch, epoch * len(train_loader.dataset), args.dataset, args.lr))
print('epoch %d, processed %d samples, dataset %s, lr %.10f' %
(epoch, epoch * len(train_loader.dataset), args.dataset, args.lr),
file=terminal_file)
model.train()
end = time.time()
train_mae = 0.0
train_mse = 0.0
train_gt_sum = 0.0
train_predict_sum = 0.0
for i, (img, gt_density_map) in enumerate(train_loader):
img = img.to(args.device)
gt_density_map = gt_density_map.to(args.device)
predict_density_map = model(img) # predict的shape为[64, 2]
loss = criterion(predict_density_map, gt_density_map)
losses.update(loss.item(), img.size(0))
optimizer.zero_grad()
loss.backward()
optimizer.step()
if i % args.print_freq == 0:
print('Epoch: [{0}][{1}/{2}]\t'
'Loss {loss.val:.4f} ({loss.avg:.4f})\t'.format(
epoch, i, len(train_loader), loss=losses),
file=terminal_file)
print('Epoch: [{0}][{1}/{2}]\t'
'Loss {loss.val:.4f} ({loss.avg:.4f})\t'.format(
epoch, i, len(train_loader), loss=losses))
train_gt_count = np.sum(gt_density_map.data.cpu().numpy())
train_predict_count = np.sum(predict_density_map.data.cpu().numpy())
train_mae += abs(train_gt_count - train_predict_count)
train_mse += (train_gt_count - train_predict_count) * (
train_gt_count - train_predict_count)
train_gt_sum += train_gt_count
train_predict_sum += train_predict_count
train_mae = train_mae / len(train_loader.dataset)
train_mse = np.sqrt(train_mse / len(train_loader.dataset))
train_gt_sum = train_gt_sum / len(train_loader.dataset)
train_predict_sum = train_predict_sum / len(train_loader.dataset)
return train_mae, train_mse, train_gt_sum, train_predict_sum