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exp_runner_finetune.py
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exp_runner_finetune.py
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"""
for fine-tuning
"""
import torch
import torch.nn.functional as F
from torch.utils.data import DataLoader
import argparse
import os
import logging
import numpy as np
import cv2 as cv
import trimesh
from shutil import copyfile
from torch.utils.tensorboard import SummaryWriter
from icecream import ic
from tqdm import tqdm
from pyhocon import ConfigFactory, HOCONConverter
from models.fields import SingleVarianceNetwork
from models.featurenet import FeatureNet
from models.trainer_finetune import FinetuneTrainer
from models.sparse_neus_renderer import SparseNeuSRenderer
from models.sparse_sdf_network import SparseSdfNetwork, FinetuneOctreeSdfNetwork
from data.dtu_fit import DtuFit
# from data.bmvs import BMVS
from utils.training_utils import tocuda
from termcolor import colored
from datetime import datetime
class Runner:
def __init__(self, conf_path, mode='train', is_continue=False,
is_finetune=False, train_from_scratch=False,
local_rank=0, checkpoint_path=None, CASE_NAME=None, train_imgs_idx=None, test_imgs_idx=None,
timestamp='latest',
visibility_beta=0.015, visibility_gama=0.010,
visibility_penalize_ratio=0.8, visibility_weight_thred=[0.7],
dataset_near=425, dataset_far=900, clip_wh=[0, 0]):
# Initial setting
self.device = torch.device('cuda')
self.num_devices = torch.cuda.device_count()
self.logger = logging.getLogger('exp_logger')
print(colored("detected %d GPUs" % self.num_devices, "red"))
self.conf_path = conf_path
self.conf = ConfigFactory.parse_file(conf_path)
# modify the config
imgs_idx_string = ''
for img_idx in train_imgs_idx:
imgs_idx_string += '_'
imgs_idx_string += str(img_idx)
############### - modify the config file ###########
self.conf['general']['base_exp_dir'] = self.conf['general']['base_exp_dir'].replace(
"CASE_NAME", CASE_NAME) + "_imgs" + imgs_idx_string
self.conf['dataset']['test_scan_id'] = self.conf['dataset']['test_scan_id'].replace("CASE_NAME", CASE_NAME)
self.conf['dataset']['train_img_idx'] = train_imgs_idx
self.conf['dataset']['test_img_idx'] = test_imgs_idx
self.conf['dataset']['near'] = dataset_near
self.conf['dataset']['far'] = dataset_far
self.conf['dataset']['test_clip_wh'] = clip_wh
self.conf['train']['visibility_beta'] = visibility_beta
self.conf['train']['visibility_gama'] = visibility_gama
self.conf['train']['visibility_penalize_ratio'] = visibility_penalize_ratio
self.conf['train']['visibility_weight_thred'] = visibility_weight_thred
if is_continue and timestamp == 'latest':
if os.path.exists(self.conf['general.base_exp_dir']):
timestamps = os.listdir(self.conf['general.base_exp_dir'])
if (len(timestamps)) == 0:
is_continue = False
timestamp = None
else:
timestamp = sorted(timestamps)[-1]
is_continue = True
else:
is_continue = False
timestamp = None
else:
is_continue = False
timestamp = None
self.timestamp = '{:%Y_%m_%d_%H_%M_%S}'.format(datetime.now()) if timestamp is None else timestamp
self.conf['general']['base_exp_dir'] = os.path.join(self.conf['general']['base_exp_dir'], self.timestamp)
self.base_exp_dir = self.conf['general.base_exp_dir']
print(colored("base_exp_dir: " + self.base_exp_dir, 'yellow'))
os.makedirs(self.base_exp_dir, exist_ok=True)
# self.dataset = Dataset(self.conf['dataset'])
self.iter_step = 0
self.val_step = 0
# trainning parameters
self.end_iter = self.conf.get_int('train.end_iter')
self.save_freq = self.conf.get_int('train.save_freq')
self.report_freq = self.conf.get_int('train.report_freq')
self.val_freq = self.conf.get_int('train.val_freq')
self.val_mesh_freq = self.conf.get_int('train.val_mesh_freq')
self.batch_size = self.num_devices
self.validate_resolution_level = self.conf.get_int('train.validate_resolution_level')
self.learning_rate = self.conf.get_float('train.learning_rate')
self.learning_rate_milestone = self.conf.get_list('train.learning_rate_milestone')
self.learning_rate_factor = self.conf.get_float('train.learning_rate_factor')
self.use_white_bkgd = self.conf.get_bool('train.use_white_bkgd')
self.N_rays = self.conf.get_int('train.N_rays')
# neural networks
self.is_continue = is_continue
self.is_finetune = is_finetune
self.train_from_scratch = train_from_scratch
self.mode = mode
self.model_list = []
self.writer = None
# Networks
self.finetune_lod = self.conf.get_int('model.finetune_lod')
self.rendering_network_outside = None
self.sdf_network_lod0 = None
self.sdf_network_lod1 = None
self.sdf_network_finetune = None
self.variance_network_lod0 = None
self.variance_network_lod1 = None
self.pyramid_feature_network = None # extract 2d pyramid feature maps from images, used for geometry
self.pyramid_feature_network_lod1 = None # may use different feature network for different lod
# * pyramid_feature_network
self.pyramid_feature_network = FeatureNet().to(self.device)
self.sdf_network_lod0 = SparseSdfNetwork(**self.conf['model.sdf_network_lod0']).to(
self.device)
self.variance_network_lod0 = SingleVarianceNetwork(**self.conf['model.variance_network']).to(self.device)
if self.finetune_lod == 1:
self.pyramid_feature_network_lod1 = FeatureNet().to(self.device)
self.sdf_network_lod1 = SparseSdfNetwork(**self.conf['model.sdf_network_lod1']).to(
self.device)
self.variance_network_lod1 = SingleVarianceNetwork(**self.conf['model.variance_network']).to(self.device)
self.sdf_network_finetune = FinetuneOctreeSdfNetwork(**self.conf['model.sdf_network_finetune'])
# Load checkpoint
latest_model_name = None
if checkpoint_path is None:
if is_continue or (is_finetune and not train_from_scratch):
model_list_raw = os.listdir(os.path.join(self.base_exp_dir, 'checkpoints'))
model_list = []
for model_name in model_list_raw:
if model_name.startswith('ckpt'):
if model_name[-3:] == 'pth': # and int(model_name[5:-4]) <= self.end_iter:
model_list.append(model_name)
model_list.sort()
latest_model_name = model_list[-1]
latest_model_name = os.path.join(self.base_exp_dir, 'checkpoints', latest_model_name)
else:
latest_model_name = checkpoint_path
if latest_model_name is not None and self.is_finetune:
self.logger.info('Find checkpoint: {}'.format(latest_model_name))
self.load_checkpoint(latest_model_name)
# Renderer model
self.trainer = FinetuneTrainer(
self.rendering_network_outside,
self.pyramid_feature_network,
self.pyramid_feature_network_lod1,
self.sdf_network_lod0,
self.sdf_network_lod1,
self.variance_network_lod0,
self.variance_network_lod1,
self.sdf_network_finetune,
self.finetune_lod,
**self.conf['model.trainer'],
conf=self.conf)
if latest_model_name is not None and self.is_continue:
self.logger.info('Find checkpoint: {}'.format(latest_model_name))
self.load_checkpoint(latest_model_name)
self.data_setup() # * data setup
# * initialize finetune network
if not self.is_continue:
self.initialize_network()
self.optimizer_setup()
self.trainer = torch.nn.DataParallel(self.trainer).to(self.device)
if self.mode[:5] == 'train':
self.file_backup()
def optimizer_setup(self):
params_to_train = self.trainer.get_trainable_params()
params = params_to_train['params']
faster_params = params_to_train['faster_params']
slower_params = params_to_train['slower_params']
self.params_to_train = params + faster_params + slower_params
self.optimizer = torch.optim.Adam([
{'params': slower_params, 'lr': self.learning_rate / 2.},
{'params': params, 'lr': self.learning_rate / 2.},
{'params': faster_params}
],
lr=self.learning_rate)
def data_setup(self):
"""
if use ddp, use setup() not prepare_data(),
prepare_data() only called on 1 GPU/TPU in distributed
:return:
"""
dataset = DtuFit
self.train_dataset = dataset(
root_dir=self.conf['dataset.testpath'], split='train',
N_rays=self.conf.get_int('train.N_rays'),
scan_id=self.conf['dataset.test_scan_id'],
n_views=self.conf.get_int('dataset.test_n_views'),
img_wh=self.conf['dataset.test_img_wh'],
clip_wh=self.conf['dataset.test_clip_wh'],
train_img_idx=self.conf.get_list('dataset.train_img_idx', default=[]),
test_img_idx=self.conf.get_list('dataset.test_img_idx', default=[]),
h_patch_size=self.conf.get_int('model.h_patch_size', default=5),
near=self.conf.get_float('dataset.near'),
far=self.conf.get_float('dataset.far')
)
self.test_dataset = dataset(
root_dir=self.conf['dataset.testpath'],
split='test',
scan_id=self.conf['dataset.test_scan_id'],
N_rays=self.conf.get_int('train.N_rays'),
img_wh=self.conf['dataset.test_img_wh'],
clip_wh=self.conf['dataset.test_clip_wh'],
n_views=self.conf.get_int('dataset.test_n_views'),
train_img_idx=self.conf.get_list('dataset.train_img_idx', default=[]),
test_img_idx=self.conf.get_list('dataset.test_img_idx', default=[]),
near=self.conf.get_float('dataset.near'),
far=self.conf.get_float('dataset.far')
)
self.train_dataloader = DataLoader(self.train_dataset,
shuffle=True,
num_workers=4 * self.batch_size,
batch_size=self.batch_size,
pin_memory=True,
drop_last=True
)
self.test_dataloader = DataLoader(self.test_dataset,
shuffle=False,
num_workers=4 * self.batch_size,
batch_size=self.batch_size,
pin_memory=True,
drop_last=True
)
self.test_dataloader_iterator = iter(self.test_dataloader)
def initialize_network(self):
sample = self.train_dataset.get_conditional_sample()
sample = tocuda(sample, self.device)
self.trainer.initialize_finetune_network(sample, train_from_scratch=self.train_from_scratch)
def train(self):
self.writer = SummaryWriter(log_dir=os.path.join(self.base_exp_dir, 'logs'))
res_step = self.end_iter - self.iter_step
dataloader = self.train_dataloader
epochs = int(1 + res_step // len(dataloader))
self.adjust_learning_rate()
print(colored("starting training learning rate: {:.5f}".format(self.optimizer.param_groups[0]['lr']), "yellow"))
background_rgb = None
if self.use_white_bkgd:
background_rgb = torch.ones([1, 3]).to(self.device)
for epoch_i in range(epochs):
print(colored("current epoch %d" % epoch_i, 'red'))
dataloader = tqdm(dataloader)
for batch in dataloader:
batch['batch_idx'] = torch.tensor([x for x in range(self.batch_size)]) # used to get meta
losses = self.trainer(
batch,
background_rgb=background_rgb,
iter_step=self.iter_step,
mode='train',
)
loss = losses['loss_lod0']
losses_lod0 = losses['losses_lod0']
self.optimizer.zero_grad()
loss.backward()
torch.nn.utils.clip_grad_norm_(self.params_to_train, 1.0)
self.optimizer.step()
self.iter_step += 1
if self.iter_step % self.report_freq == 0:
self.writer.add_scalar('Loss/loss', loss, self.iter_step)
if losses_lod0 is not None:
self.writer.add_scalar('Loss/sparse_loss',
losses_lod0[
'sparse_loss'].mean() if losses_lod0 is not None else 0,
self.iter_step)
self.writer.add_scalar('Loss/color_loss',
losses_lod0['color_mlp_loss'].mean()
if losses_lod0['color_mlp_loss'] is not None else 0,
self.iter_step)
self.writer.add_scalar('statis/psnr',
losses_lod0['psnr_mlp'].mean()
if losses_lod0['psnr_mlp'] is not None else 0,
self.iter_step)
print(self.base_exp_dir)
self.logger.info(
'iter:{:8>d} '
'loss = {:.4f} '
'color_loss = {:.4f} '
'sparse_loss= {:.4f} '
'color_patch_loss = {:.4f} '
'mask_loss = {:.4f}'
' lr = {:.5f}'.format(
self.iter_step, loss,
losses_lod0['color_mlp_loss'].mean() ,
losses_lod0['sparse_loss'].mean(),
losses_lod0['color_patch_loss'].mean(),
losses_lod0['mask_loss'].mean(),
self.optimizer.param_groups[0]['lr']))
if losses_lod0 is not None:
self.logger.info(
'iter:{:8>d} '
'weights_sum = {:.4f} '
'alpha_sum = {:.4f} '
'sparse_weight= {:.4f} '
.format(
self.iter_step,
losses_lod0['weights_sum'].mean(),
losses_lod0['alpha_sum'].mean(),
losses_lod0['sparse_weight'].mean(),
))
ic(losses_lod0['variance'])
if self.iter_step % self.save_freq == 0 and self.iter_step > 5000:
self.save_checkpoint()
if self.iter_step % self.val_freq == 0:
self.validate()
# - ajust learning rate
self.adjust_learning_rate()
def adjust_learning_rate(self):
# the geometric part slow training in the early stage
warmup_start = 500
end = self.end_iter * 0.9
if self.iter_step < warmup_start:
learning_factor_slow = 0.
else:
alpha = 0.5
progress = np.min([self.iter_step / end, 1.0])
learning_factor_slow = (np.cos(np.pi * progress) + 1.0) * 0.5 * (1 - alpha) + alpha
# the rendering part fast training
alpha = 0.5
progress = np.min([self.iter_step / end, 1.0])
learning_factor_fast = (np.cos(np.pi * progress) + 1.0) * 0.5 * (1 - alpha) + alpha
gs = self.optimizer.param_groups
gs[0]['lr'] = self.learning_rate * learning_factor_slow * 0.5
gs[1]['lr'] = self.learning_rate * learning_factor_slow * 0.5
gs[2]['lr'] = self.learning_rate * learning_factor_fast
def get_alpha_inter_ratio(self, start, end):
if self.is_finetune and not self.train_from_scratch:
return 1.0
if end == 0.0:
return 1.0
elif self.iter_step < start:
return 0.0
else:
return np.min([1.0, (self.iter_step - start) / (end - start)])
def file_backup(self):
# copy python file
dir_lis = self.conf['general.recording']
os.makedirs(os.path.join(self.base_exp_dir, 'recording'), exist_ok=True)
for dir_name in dir_lis:
cur_dir = os.path.join(self.base_exp_dir, 'recording', dir_name)
os.makedirs(cur_dir, exist_ok=True)
files = os.listdir(dir_name)
for f_name in files:
if f_name[-3:] == '.py':
copyfile(os.path.join(dir_name, f_name), os.path.join(cur_dir, f_name))
# export config file
with open(os.path.join(self.base_exp_dir, 'recording', 'config.conf'), "w") as fd:
res = HOCONConverter.to_hocon(self.conf)
fd.write(res)
def load_checkpoint(self, checkpoint_name):
def load_state_dict(network, checkpoint, comment):
if network is not None:
try:
pretrained_dict = checkpoint[comment]
model_dict = network.state_dict()
# 1. filter out unnecessary keys
pretrained_dict = {k: v for k, v in pretrained_dict.items() if k in model_dict}
# 2. overwrite entries in the existing state dict
model_dict.update(pretrained_dict)
# 3. load the new state dict
network.load_state_dict(pretrained_dict)
except:
print(colored(comment + " load fails", 'yellow'))
checkpoint = torch.load(checkpoint_name,
map_location=self.device)
load_state_dict(self.rendering_network_outside, checkpoint, 'rendering_network_outside')
load_state_dict(self.sdf_network_lod0, checkpoint, 'sdf_network_lod0')
load_state_dict(self.sdf_network_lod1, checkpoint, 'sdf_network_lod1')
if self.is_finetune:
if self.finetune_lod == 0:
load_state_dict(self.sdf_network_finetune, checkpoint, 'sdf_network_lod0')
else:
load_state_dict(self.sdf_network_finetune, checkpoint, 'sdf_network_lod1')
if self.is_continue:
load_state_dict(self.sdf_network_finetune, checkpoint, 'sdf_network_finetune')
sparse_con_volume = checkpoint['sdf_network_finetune']['sparse_volume_lod0.volume']
sparse_coords_volume = checkpoint['sdf_network_finetune']['sparse_coords_lod0']
self.trainer.initialize_finetune_network(None, sparse_con_volume, sparse_coords_volume)
load_state_dict(self.pyramid_feature_network, checkpoint, 'pyramid_feature_network')
load_state_dict(self.pyramid_feature_network_lod1, checkpoint, 'pyramid_feature_network_lod1')
load_state_dict(self.variance_network_lod0, checkpoint, 'variance_network_lod0')
load_state_dict(self.variance_network_lod1, checkpoint, 'variance_network_lod1')
if self.is_continue:
self.iter_step = checkpoint['iter_step']
self.val_step = checkpoint['val_step'] if 'val_step' in checkpoint.keys() else 0
self.logger.info('End')
def load_optimizer(self, checkpoint_name):
checkpoint = torch.load(checkpoint_name,map_location=self.device)
if self.is_continue:
self.optimizer.load_state_dict(checkpoint['optimizer'])
def save_checkpoint(self):
def save_state_dict(network, checkpoint, comment):
if network is not None:
checkpoint[comment] = network.state_dict()
checkpoint = {
'optimizer': self.optimizer.state_dict(),
'iter_step': self.iter_step,
'val_step': self.val_step,
}
save_state_dict(self.sdf_network_lod0, checkpoint, "sdf_network_lod0")
save_state_dict(self.sdf_network_lod1, checkpoint, "sdf_network_lod1")
save_state_dict(self.rendering_network_outside, checkpoint, 'rendering_network_outside')
save_state_dict(self.variance_network_lod0, checkpoint, 'variance_network_lod0')
save_state_dict(self.variance_network_lod1, checkpoint, 'variance_network_lod1')
save_state_dict(self.sdf_network_finetune, checkpoint, 'sdf_network_finetune')
save_state_dict(self.pyramid_feature_network, checkpoint, 'pyramid_feature_network')
save_state_dict(self.pyramid_feature_network_lod1, checkpoint, 'pyramid_feature_network_lod1')
os.makedirs(os.path.join(self.base_exp_dir, 'checkpoints'), exist_ok=True)
torch.save(checkpoint,
os.path.join(self.base_exp_dir, 'checkpoints', 'ckpt_{:0>6d}.pth'.format(self.iter_step)))
def validate(self, idx=-1, resolution_level=-1):
# validate image
ic(self.iter_step, idx)
self.logger.info('Validate begin')
if idx < 0:
idx = self.val_step
self.val_step += 1
try:
batch = next(self.test_dataloader_iterator)
except:
self.test_dataloader_iterator = iter(self.test_dataloader) # reset
batch = next(self.test_dataloader_iterator)
background_rgb = None
if self.use_white_bkgd:
background_rgb = torch.ones([1, 3]).to(self.device)
batch['batch_idx'] = torch.tensor([x for x in range(self.batch_size)])
self.trainer(
batch,
background_rgb=background_rgb,
iter_step=self.iter_step,
save_vis=True,
mode='val',
)
def gen_video(self):
batch = self.test_dataloader_iterator.next()
background_rgb = torch.ones([1, 3]).to(self.device)
batch['batch_idx'] = torch.tensor([x for x in range(self.batch_size)])
batch = tocuda(batch, self.device)
self.trainer.module.gen_video(
batch,
background_rgb=background_rgb
)
if __name__ == '__main__':
# torch.set_default_tensor_type('torch.cuda.FloatTensor')
torch.set_default_dtype(torch.float32)
FORMAT = "[%(filename)s:%(lineno)s - %(funcName)20s() ] %(message)s"
logging.basicConfig(level=logging.INFO, format=FORMAT)
parser = argparse.ArgumentParser()
parser.add_argument('--conf', type=str, default='./confs/base.conf')
parser.add_argument('--mode', type=str, default='train')
parser.add_argument('--threshold', type=float, default=0.0)
parser.add_argument('--is_continue', default=False, action="store_true")
parser.add_argument('--is_finetune', default=False, action="store_true")
parser.add_argument('--train_from_scratch', default=False, action="store_true")
parser.add_argument('--local_rank', type=int, default=0)
parser.add_argument('--case_name', type=str, help='the input dtu scan')
parser.add_argument('--train_imgs_idx', nargs='+', help='the input images idx')
parser.add_argument('--test_imgs_idx', nargs='+', help='the input images idx')
parser.add_argument('--checkpoint_path', type=str, help='the pretrained checkpoint of general model')
## perscene finetuning params
parser.add_argument('--visibility_beta', type=float, default=0.015, help='used in occlusion-aware patch loss')
parser.add_argument('--visibility_gama', type=float, default=0.010, help='used in occlusion-aware patch loss')
parser.add_argument('--visibility_penalize_ratio', type=float, default=0.8,
help='used in occlusion-aware patch loss')
parser.add_argument('--visibility_weight_thred', nargs='+', default=[0.7],
help='visibility_weight_thred')
parser.add_argument('--near', type=float, default=425)
parser.add_argument('--far', type=float, default=900)
parser.add_argument('--clip_wh', nargs='+', help='clip image width and height', default=[0, 0])
args = parser.parse_args()
# torch.cuda.set_device(args.local_rank)
torch.backends.cudnn.benchmark = True # ! make training 2x faster
runner = Runner(args.conf, args.mode, args.is_continue,
args.is_finetune, args.train_from_scratch,
args.local_rank, CASE_NAME=args.case_name,
checkpoint_path=args.checkpoint_path,
train_imgs_idx=[int(x) for x in args.train_imgs_idx],
test_imgs_idx=[int(x) for x in args.test_imgs_idx],
visibility_beta=args.visibility_beta,
visibility_gama=args.visibility_gama,
visibility_penalize_ratio=args.visibility_penalize_ratio,
visibility_weight_thred=[float(x) for x in args.visibility_weight_thred],
dataset_near=args.near,
dataset_far=args.far,
clip_wh=[int(x) for x in args.clip_wh]
)
if args.mode == 'train':
runner.train()
elif args.mode == 'test' or args.mode == 'val':
runner.validate()
elif args.mode == 'gen_video':
runner.gen_video()