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train.py
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train.py
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import os
import torch
from torchvision import transforms
from torch.utils.data import DataLoader
from option.config import Config
from model.model_main import IQARegression
from model.backbone import resnet50_backbone
from trainer import train_epoch, eval_epoch
from utils.util import RandHorizontalFlip, Normalize, ToTensor, RandShuffle
# config file
config = Config({
# device
'gpu_id': "0", # specify GPU number to use
'num_workers': 8,
# data
'db_name': 'KonIQ-10k', # database type
'db_path': '/mnt/Dataset/anse_data/IQAdata/koniq-10k', # root path of database
'txt_file_name': './IQA_list/koniq-10k.txt', # list of images in the database
'train_size': 0.8, # train/vaildation separation ratio
'scenes': 'all', # using all scenes
'scale_1': 384,
'scale_2': 224,
'batch_size': 8,
'patch_size': 32,
# ViT structure
'n_enc_seq': 32*24 + 12*9 + 7*5, # input feature map dimension (N = H*W) from backbone
'n_layer': 14, # number of encoder layers
'd_hidn': 384, # input channel of encoder (input: C x N)
'i_pad': 0,
'd_ff': 384, # feed forward hidden layer dimension
'd_MLP_head': 1152, # hidden layer of final MLP
'n_head': 6, # number of head (in multi-head attention)
'd_head': 384, # channel of each head -> same as d_hidn
'dropout': 0.1, # dropout ratio
'emb_dropout': 0.1, # dropout ratio of input embedding
'layer_norm_epsilon': 1e-12,
'n_output': 1, # dimension of output
'Grid': 10, # grid of 2D spatial embedding
# optimization & training parameters
'n_epoch': 100, # total training epochs
'learning_rate': 1e-4, # initial learning rate
'weight_decay': 0, # L2 regularization weight
'momentum': 0.9, # SGD momentum
'T_max': 3e4, # period (iteration) of cosine learning rate decay
'eta_min': 0, # minimum learning rate
'save_freq': 10, # save checkpoint frequency (epoch)
'val_freq': 5, # validation frequency (epoch)
# load & save checkpoint
'snap_path': './weights', # directory for saving checkpoint
'checkpoint': None, # load checkpoint
})
# device setting
config.device = torch.device('cuda:%s' % config.gpu_id if torch.cuda.is_available() else 'cpu')
if torch.cuda.is_available():
print('Using GPU %s' % config.gpu_id)
else:
print('Using CPU')
# data selection
if config.db_name == 'KonIQ-10k':
from data.koniq import IQADataset
# dataset separation (8:2)
train_scene_list, test_scene_list = RandShuffle(config)
print('number of train scenes: %d' % len(train_scene_list))
print('number of test scenes: %d' % len(test_scene_list))
# data load
train_dataset = IQADataset(
db_path=config.db_path,
txt_file_name=config.txt_file_name,
scale_1=config.scale_1,
scale_2=config.scale_2,
transform=transforms.Compose([Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225]), RandHorizontalFlip(), ToTensor()]),
train_mode=True,
scene_list=train_scene_list,
train_size=config.train_size
)
test_dataset = IQADataset(
db_path=config.db_path,
txt_file_name=config.txt_file_name,
scale_1=config.scale_1,
scale_2=config.scale_2,
transform= transforms.Compose([Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225]), ToTensor()]),
train_mode=False,
scene_list=test_scene_list,
train_size=config.train_size
)
train_loader = DataLoader(dataset=train_dataset, batch_size=config.batch_size, num_workers=config.num_workers, drop_last=True, shuffle=True)
test_loader = DataLoader(dataset=test_dataset, batch_size=config.batch_size, num_workers=config.num_workers, drop_last=True, shuffle=True)
# create model
model_backbone = resnet50_backbone().to(config.device)
model_transformer = IQARegression(config).to(config.device)
# loss function & optimization
criterion = torch.nn.L1Loss()
params = list(model_backbone.parameters()) + list(model_transformer.parameters())
optimizer = torch.optim.SGD(params, lr=config.learning_rate, weight_decay=config.weight_decay, momentum=config.momentum)
scheduler = torch.optim.lr_scheduler.CosineAnnealingLR(optimizer, T_max=config.T_max, eta_min=config.eta_min)
# load weights & optimizer
if config.checkpoint is not None:
checkpoint = torch.load(config.checkpoint)
model_backbone.load_state_dict(checkpoint['model_backbone_state_dict'])
model_transformer.load_state_dict(checkpoint['model_transformer_state_dict'])
optimizer.load_state_dict(checkpoint['optimizer_state_dict'])
scheduler.load_state_dict(checkpoint['scheduler_state_dict'])
start_epoch = checkpoint['epoch']
loss = checkpoint['loss']
else:
start_epoch = 0
# make directory for saving weights
if not os.path.exists(config.snap_path):
os.mkdir(config.snap_path)
# train & validation
for epoch in range(start_epoch, config.n_epoch):
loss, rho_s, rho_p = train_epoch(config, epoch, model_transformer, model_backbone, criterion, optimizer, scheduler, train_loader)
if (epoch+1) % config.val_freq == 0:
loss, rho_s, rho_p = eval_epoch(config, epoch, model_transformer, model_backbone, criterion, test_loader)