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train.py
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train.py
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"""
Train on FlyingThings3D
Author: Wenxuan Wu
Date: May 2020
"""
import argparse
import sys
import os
import torch, numpy as np, glob, math, torch.utils.data, scipy.ndimage, multiprocessing as mp
import torch.nn.functional as F
import time
import pickle
import datetime
import logging
from tqdm import tqdm
from networks import get_model
from lib.utils import n_model_parameters
from pathlib import Path
from collections import defaultdict, OrderedDict
from networks.recurrent_rigid_scene_flow_v6_oripc_er_2 import sequence_loss
from networks.flowstep3d import sequence_loss as ori_sequence_loss
from networks.flowstep3d import self_flowstep3d_sequence_loss
from evaluation_utils import evaluate_2d, evaluate_3d
import transforms
import datasets
import cmd_args
from main_utils import *
_ITE_NUM = 4
def get_instance_cluster_gt(label1):
"""
:param label1: [B, 1, N]
:return: clusters_1
"""
clusters_1 = defaultdict(list)
for b_idx in range(label1.shape[0]):
label1_curr = label1[b_idx, :, :]
fg_idx1_curr = torch.where(label1_curr[0] != -1)[0] # N
inlier_label1_curr = label1_curr[:, fg_idx1_curr]
for class_label in torch.unique(inlier_label1_curr):
if torch.where(inlier_label1_curr[0] == class_label)[0].shape[0] >= 30:
clusters_1[str(b_idx)].append(fg_idx1_curr[torch.where(inlier_label1_curr[0] == class_label)[0]])
return clusters_1
def get_clusters_fore_label(pc1, clusters_1):
clusters_foreground_label1_list = []
for b_idx in range(pc1.shape[0]):
clusters_foreground_label1_curr = torch.zeros_like(pc1[0, :1, :]).float()
for c_idx in clusters_1[str(b_idx)]:
clusters_foreground_label1_curr[:, c_idx] = 1.0
clusters_foreground_label1_list.append(clusters_foreground_label1_curr)
clusters_foreground_label1 = torch.stack(clusters_foreground_label1_list, dim=0)
return clusters_foreground_label1
def main():
if 'NUMBA_DISABLE_JIT' in os.environ:
del os.environ['NUMBA_DISABLE_JIT']
global args
args = cmd_args.parse_args_from_yaml(sys.argv[1])
os.environ['CUDA_VISIBLE_DEVICES'] = args.gpu if args.multi_gpu is None else '0,1'
'''CREATE DIR'''
experiment_dir = Path('/output/experiment/')
experiment_dir.mkdir(exist_ok=True)
file_dir = Path(str(experiment_dir) + '/PointConv%sFlyingthings3d-' % args.model_name + str(
datetime.datetime.now().strftime('%Y-%m-%d_%H-%M')))
file_dir.mkdir(exist_ok=True)
checkpoints_dir = file_dir.joinpath('checkpoints/')
checkpoints_dir.mkdir(exist_ok=True)
log_dir = file_dir.joinpath('logs/')
log_dir.mkdir(exist_ok=True)
os.system('cp %s %s' % ('models.py', log_dir))
os.system('cp %s %s' % ('pointconv_util.py', log_dir))
os.system('cp %s %s' % ('_train.py', log_dir))
os.system('cp %s %s' % ('config_train.yaml', log_dir))
'''LOG'''
logger = logging.getLogger(args.model_name)
logger.setLevel(logging.INFO)
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
file_handler = logging.FileHandler(str(log_dir) + '/train_%s_sceneflow.txt' % args.model_name)
file_handler.setLevel(logging.INFO)
file_handler.setFormatter(formatter)
logger.addHandler(file_handler)
logger.info('----------------------------------------TRAINING----------------------------------')
logger.info('PARAMETER ...')
logger.info(args)
blue = lambda x: '\033[94m' + x + '\033[0m'
model = get_model(args.model_name)()
if args.dataset == 'LidarKITTI':
transform_function = transforms.ProcessDataKITTI(args.data_process,
args.num_points,
args.allow_less_points)
elif args.dataset == 'WaymoOpen':
transform_function = transforms.ProcessDataWaymo(args.data_process,
args.num_points,
args.allow_less_points)
elif args.dataset == 'SemanticKITTI':
transform_function = transforms.ProcessDataWaymo(args.data_process,
args.num_points,
args.allow_less_points)
else:
transform_function = None
train_dataset = datasets.__dict__[args.dataset](
train=True,
transform=transform_function,
num_points=args.num_points,
data_root=args.data_root,
full=args.full
)
logger.info('train_dataset: ' + str(train_dataset))
train_loader = torch.utils.data.DataLoader(
train_dataset,
batch_size=args.batch_size,
shuffle=True,
num_workers=args.workers,
pin_memory=True,
worker_init_fn=lambda x: np.random.seed((torch.initial_seed()) % (2 ** 32))
)
val_dataset = datasets.__dict__['LidarKITTI'](
train=False,
transform=transforms.ProcessDataKITTI(args.data_process,
args.num_points,
args.allow_less_points),
num_points=args.num_points,
data_root=args.data_root
)
logger.info('val_dataset: ' + str(val_dataset))
val_loader = torch.utils.data.DataLoader(
val_dataset,
batch_size=1,
shuffle=False,
num_workers=args.workers,
pin_memory=True,
worker_init_fn=lambda x: np.random.seed((torch.initial_seed()) % (2 ** 32))
)
'''GPU selection and multi-GPU'''
if args.multi_gpu is not None:
device_ids = [int(x) for x in args.multi_gpu.split(',')]
torch.backends.cudnn.benchmark = True
model.cuda(device_ids[0])
model = torch.nn.DataParallel(model, device_ids=device_ids)
else:
model.cuda()
if args.pretrain is not None:
if args.multi_gpu is not None:
####### Only update the Encoder #########
pretrained_dict = torch.load(args.pretrain)
renamed_dict = model.state_dict()
pretrained_temp_dict = OrderedDict()
for k, v in pretrained_dict.items():
k_split = k.split('.')
new_k = ".".join(k_split)
new_k = 'module.' + new_k
pretrained_temp_dict[new_k] = v
pretrained_temp_dict = {k: v for k, v in pretrained_temp_dict.items() if k in renamed_dict}
renamed_dict.update(pretrained_temp_dict)
model.load_state_dict(renamed_dict)
else:
pretrained_dict = torch.load(args.pretrain)
renamed_dict = model.state_dict()
pretrained_dict = {k: v for k, v in pretrained_dict.items() if k in renamed_dict}
for k, v in pretrained_dict.items():
k_split = k.split('.')
new_k = ".".join(k_split)
renamed_dict[new_k] = v
model.load_state_dict(renamed_dict)
print('load model %s' % args.pretrain)
logger.info('load model %s' % args.pretrain)
else:
print('Training from scratch')
logger.info('Training from scratch')
pretrain = args.pretrain
if args.continue_pretrain and args.pretrain is not None:
init_epoch = int(pretrain[-14:-11])
else:
init_epoch = 0
if args.optimizer == 'SGD':
optimizer = torch.optim.SGD(model.parameters(), lr=args.learning_rate, momentum=0.9)
elif args.optimizer == 'Adam':
optimizer = torch.optim.Adam(model.parameters(), lr=args.learning_rate, betas=(0.9, 0.999),
eps=1e-08, weight_decay=args.weight_decay)
# Output number of model parameters
logger.info("Parameter Count: {:d}".format(n_model_parameters(model)))
optimizer.param_groups[0]['initial_lr'] = args.learning_rate
scheduler = torch.optim.lr_scheduler.ExponentialLR(optimizer, gamma=0.98, last_epoch=init_epoch - 1)
LEARNING_RATE_CLIP = 1e-5
history = defaultdict(lambda: list())
best_epe = 1000.0
for epoch in range(init_epoch, args.epochs):
lr = max(optimizer.param_groups[0]['lr'], LEARNING_RATE_CLIP)
print('Learning rate:%f' % lr)
for param_group in optimizer.param_groups:
param_group['lr'] = lr
total_loss = 0
total_trans_loss = 0
total_inlier_loss = 0
total_chamfer_loss = 0
total_rigid_loss = 0
total_seen = 0
optimizer.zero_grad()
### TRAIN ####
for i, data in tqdm(enumerate(train_loader, 0), total=len(train_loader), smoothing=0.9):
pos1, pos2, aligned_pos1, \
norm1, norm2, aligned_norm1, \
flow, gt_rot, gt_trans, \
gt_label1, gt_label2, \
fg_labels1, fg_labels2, _ = data
ego_flow = aligned_pos1 - pos1
# move to cuda
pos1 = pos1.cuda()
pos2 = pos2.cuda()
norm1 = norm1.cuda()
norm2 = norm2.cuda()
flow = flow.cuda() # like as pos1
ego_flow = ego_flow.cuda()
gt_label1 = gt_label1.cuda()
gt_label2 = gt_label2.cuda()
model = model.train()
if args.model_name == 'SequenceWeights':
pred_flows, pred_rigid_flows, pred_weights = model(pos1, pos2,
norm1, norm2,
gt_label1, gt_label2,
fg_labels1, fg_labels2, _ITE_NUM)
loss, _, _, _, _ = sequence_loss(pos1, pos2, pred_flows, pred_rigid_flows, ego_flow,gt_label1, gt_label2, pred_weights)
elif args.model_name == 'FlowRigidStep3D':
pred_flows, pred_rigid_flows, pred_weights = model(pos1, pos2,
norm1, norm2,
gt_label1, gt_label2,
fg_labels1, fg_labels2, _ITE_NUM)
loss, _, _, _, _ = sequence_loss(pos1, pos2, pred_flows, pred_rigid_flows, ego_flow,gt_label1, gt_label2, pred_weights)
elif args.model_name == 'FlowStep3D':
pc1 = pos1.permute(0, 2, 1).contiguous()
pc2 = pos2.permute(0, 2, 1).contiguous()
fg_label1 = fg_labels1.permute(0, 2, 1).contiguous() # B 1 N
fg_label2 = fg_labels2.permute(0, 2, 1).contiguous() # B 1 N
clusters_1 = get_instance_cluster_gt(fg_label1)
clusters_2 = get_instance_cluster_gt(fg_label2)
clusters_foreground_label1 = get_clusters_fore_label(pc1, clusters_1)
clusters_foreground_label2 = get_clusters_fore_label(pc2, clusters_2)
pred_flows = model(pos1, pos2, norm1, norm2, _ITE_NUM)
loss, _, _, _ = self_flowstep3d_sequence_loss(pos1, pos2, pred_flows, ego_flow, gt_label1, gt_label2, clusters_foreground_label1, clusters_foreground_label2)
elif args.model_name == 'SequenceWeightsNR':
pc1 = pos1.permute(0, 2, 1).contiguous()
pc2 = pos2.permute(0, 2, 1).contiguous()
fg_label1 = fg_labels1.permute(0, 2, 1).contiguous() # B 1 N
fg_label2 = fg_labels2.permute(0, 2, 1).contiguous() # B 1 N
clusters_1 = get_instance_cluster_gt(fg_label1)
clusters_2 = get_instance_cluster_gt(fg_label2)
clusters_foreground_label1 = get_clusters_fore_label(pc1, clusters_1)
clusters_foreground_label2 = get_clusters_fore_label(pc2, clusters_2)
pred_flows,_ = model(pos1, pos2, norm1, norm2, _ITE_NUM)
loss, _, _, _ = self_flowstep3d_sequence_loss(pos1, pos2, pred_flows, ego_flow, gt_label1, gt_label2, clusters_foreground_label1, clusters_foreground_label2)
history['loss'].append(loss.cpu().data.numpy())
loss.backward()
optimizer.step()
optimizer.zero_grad()
total_loss += loss.cpu().data * args.batch_size
total_seen += args.batch_size
scheduler.step()
train_loss = total_loss / total_seen
train_trans_loss = total_trans_loss / total_seen
train_inlier_loss = total_inlier_loss / total_seen
train_chamfer_loss = total_chamfer_loss / total_seen
train_rigid_loss = total_rigid_loss / total_seen
str_out = 'EPOCH %d %s mean loss: %f' % (epoch, 'train', train_loss)
print(str_out)
logger.info(str_out)
str_out1 = 'EPOCH %d %s mean trans_loss: %f' % (epoch, 'train', train_trans_loss)
str_out2 = 'EPOCH %d %s mean inlier_loss: %f' % (epoch, 'train', train_inlier_loss)
str_out3 = 'EPOCH %d %s mean chamfer_loss: %f' % (epoch, 'train', train_chamfer_loss)
str_out4 = 'EPOCH %d %s mean rigid_loss: %f' % (epoch, 'train', train_rigid_loss)
print(str_out1)
print(str_out2)
print(str_out3)
print(str_out4)
logger.info(str_out1)
logger.info(str_out2)
logger.info(str_out3)
logger.info(str_out4)
#### EVAL #####
eval_epe3d_list, eval_acc3d_strict_list, eval_acc3d_relax_list, eval_outlier_list, eval_loss= eval_sceneflow(model.eval(), val_loader)
str_out_1 = 'EPOCH %d %s mean eval loss: %f mean epe3d 1 : %f mean acc3d strict 1 : %f, mean acc3d relax 1 : %f mean outlier 1 : %f ' % \
(epoch, 'eval', eval_loss, eval_epe3d_list[0], eval_acc3d_strict_list[0], eval_acc3d_relax_list[0], eval_outlier_list[0])
str_out_2 = 'EPOCH %d %s mean eval loss: %f mean epe3d 2 : %f mean acc3d strict 2 : %f, mean acc3d relax 2 : %f mean outlier 2 : %f ' % \
(epoch, 'eval', eval_loss, eval_epe3d_list[1], eval_acc3d_strict_list[1], eval_acc3d_relax_list[1], eval_outlier_list[1])
str_out_3 = 'EPOCH %d %s mean eval loss: %f mean epe3d 3 : %f mean acc3d strict 3 : %f, mean acc3d relax 3 : %f mean outlier 3 : %f ' % \
(epoch, 'eval', eval_loss, eval_epe3d_list[2], eval_acc3d_strict_list[2], eval_acc3d_relax_list[2], eval_outlier_list[2])
str_out_4 = 'EPOCH %d %s mean eval loss: %f mean epe3d 4 : %f mean acc3d strict 4 : %f, mean acc3d relax 4 : %f mean outlier 4 : %f ' % \
(epoch, 'eval', eval_loss, eval_epe3d_list[3], eval_acc3d_strict_list[3], eval_acc3d_relax_list[3], eval_outlier_list[3])
print(str_out_1)
logger.info(str_out_1)
print(str_out_2)
logger.info(str_out_2)
print(str_out_3)
logger.info(str_out_3)
print(str_out_4)
logger.info(str_out_4)
str_out1 = 'EPOCH %d %s mean eval_loss: %f' % (epoch, 'eval', eval_loss)
print(str_out1)
logger.info(str_out1)
if eval_epe3d_list[-1] < best_epe:
best_epe = eval_epe3d_list[-1]
torch.save(optimizer.state_dict(), '%s/optimizer.pth' % (checkpoints_dir))
if args.multi_gpu is not None:
torch.save(model.module.state_dict(),
'%s/%s_%.3d_%.4f.pth' % (checkpoints_dir, args.model_name, epoch, best_epe))
else:
torch.save(model.state_dict(),
'%s/%s_%.3d_%.4f.pth' % (checkpoints_dir, args.model_name, epoch, best_epe))
logger.info('Save model ...')
print('Save model ...')
print('Best epe loss is: %.5f' % (best_epe))
logger.info('Best epe loss is: %.5f' % (best_epe))
def eval_sceneflow(model, loader):
metrics = defaultdict(lambda: list())
time_mean = 0
for batch_id, data in tqdm(enumerate(loader), total=len(loader), smoothing=0.9):
pos1, pos2, aligned_pos1, \
norm1, norm2, aligned_norm1, \
flow, gt_rot, gt_trans, \
gt_label1, gt_label2, \
fg_labels1, fg_labels2, _ = data
ego_flow = aligned_pos1-pos1
# move to cuda
pos1 = pos1.cuda()
pos2 = pos2.cuda()
norm1 = norm1.cuda()
norm2 = norm2.cuda()
flow = flow.cuda()
ego_flow = ego_flow.cuda()
gt_label1 = gt_label1.cuda()
gt_label2 = gt_label2.cuda()
with torch.no_grad():
start = torch.cuda.Event(enable_timing=True)
end = torch.cuda.Event(enable_timing=True)
start.record()
if args.model_name == 'SequenceWeights':
pred_flows, pred_rigid_flows, pred_weights = model(pos1, pos2,
norm1, norm2,
gt_label1, gt_label2,
fg_labels1, fg_labels2, _ITE_NUM)
eval_loss, _, _, _, _ = sequence_loss(pos1, pos2, pred_flows, pred_rigid_flows, ego_flow, gt_label1,
gt_label2, pred_weights)
elif args.model_name == 'FlowStep3D':
pred_rigid_flows = model(pos1, pos2, norm1, norm2, _ITE_NUM)
print(pred_rigid_flows[-1].shape)
eval_loss = ori_sequence_loss(pos1, pos2, pred_rigid_flows, flow)
elif args.model_name == 'SequenceWeightsNR':
pred_rigid_flows, _ = model(pos1, pos2, norm1, norm2, _ITE_NUM)
print(pred_rigid_flows[-1].shape)
eval_loss = ori_sequence_loss(pos1, pos2, pred_rigid_flows, flow)
end.record()
torch.cuda.synchronize()
print('Inference time: {}'.format(start.elapsed_time(end)))
root_dir = '/output/results'
if not os.path.exists(root_dir):
os.mkdir(root_dir)
trans_pc2_4 = pos1 + pred_rigid_flows[-1]
trans_pc2_3 = pos1+pred_rigid_flows[-2]
trans_pc2_2 = pos1+pred_rigid_flows[-3]
trans_pc2_1 = pos1+pred_rigid_flows[-4]
# print(trans_pc2.shape)
filename = '%04d.npy' % batch_id
pc1_path = os.path.join(root_dir, 'pc1_'+filename)
pc2_path = os.path.join(root_dir, 'pc2_'+filename)
trans_pc2_1_path = os.path.join(root_dir, 'trans_pc2_1_'+filename)
trans_pc2_2_path = os.path.join(root_dir, 'trans_pc2_2_'+filename)
trans_pc2_3_path = os.path.join(root_dir, 'trans_pc2_3_'+filename)
trans_pc2_4_path = os.path.join(root_dir, 'trans_pc2_4_'+filename)
gt_trans_pc2_path = os.path.join(root_dir, 'gt_trans_pc2_'+filename)
sf_np = flow[0].cpu().numpy()
pc1_np = pos1[0].cpu().numpy()
pc2_np = pos2[0].cpu().numpy()
trans_pc2_1_np = trans_pc2_1[0].cpu().numpy()
trans_pc2_2_np = trans_pc2_2[0].cpu().numpy()
trans_pc2_3_np = trans_pc2_3[0].cpu().numpy()
trans_pc2_4_np = trans_pc2_4[0].cpu().numpy()
gt_trans_pc2_np = sf_np + pc1_np
np.save(pc1_path, pc1_np)
np.save(pc2_path, pc2_np)
np.save(trans_pc2_1_path, trans_pc2_1_np)
np.save(trans_pc2_2_path, trans_pc2_2_np)
np.save(trans_pc2_3_path, trans_pc2_3_np)
np.save(trans_pc2_4_path, trans_pc2_4_np)
np.save(gt_trans_pc2_path, gt_trans_pc2_np)
pred_sf_1 = trans_pc2_1_np - pc1_np
pred_sf_2 = trans_pc2_2_np-pc1_np
pred_sf_3 = trans_pc2_3_np-pc1_np
pred_sf_4 = trans_pc2_4_np-pc1_np
epe3d_1, acc3d_strict_1, acc3d_relax_1, outlier_1 = evaluate_3d(pred_sf_1, sf_np)
epe3d_2, acc3d_strict_2, acc3d_relax_2, outlier_2 = evaluate_3d(pred_sf_2, sf_np)
epe3d_3, acc3d_strict_3, acc3d_relax_3, outlier_3 = evaluate_3d(pred_sf_3, sf_np)
epe3d_4, acc3d_strict_4, acc3d_relax_4, outlier_4 = evaluate_3d(pred_sf_4, sf_np)
metrics['epe3d_1_loss'].append(epe3d_1)
metrics['epe3d_2_loss'].append(epe3d_2)
metrics['epe3d_3_loss'].append(epe3d_3)
metrics['epe3d_4_loss'].append(epe3d_4)
metrics['acc3d_strict_1'].append(acc3d_strict_1)
metrics['acc3d_strict_2'].append(acc3d_strict_2)
metrics['acc3d_strict_3'].append(acc3d_strict_3)
metrics['acc3d_strict_4'].append(acc3d_strict_4)
metrics['acc3d_relax_1'].append(acc3d_relax_1)
metrics['acc3d_relax_2'].append(acc3d_relax_2)
metrics['acc3d_relax_3'].append(acc3d_relax_3)
metrics['acc3d_relax_4'].append(acc3d_relax_4)
metrics['outlier_1'].append(outlier_1)
metrics['outlier_2'].append(outlier_2)
metrics['outlier_3'].append(outlier_3)
metrics['outlier_4'].append(outlier_4)
metrics['eval_loss'].append(eval_loss.cpu().data.numpy())
mean_eval = np.mean(metrics['eval_loss'])
mean_epe3d_1 = np.mean(metrics['epe3d_1_loss'])
mean_acc3d_strict_1 = np.mean(metrics['acc3d_strict_1'])
mean_acc3d_relax_1 = np.mean(metrics['acc3d_relax_1'])
mean_outlier_1 = np.mean(metrics['outlier_1'])
mean_epe3d_2 = np.mean(metrics['epe3d_2_loss'])
mean_acc3d_strict_2 = np.mean(metrics['acc3d_strict_2'])
mean_acc3d_relax_2 = np.mean(metrics['acc3d_relax_2'])
mean_outlier_2 = np.mean(metrics['outlier_2'])
mean_epe3d_3 = np.mean(metrics['epe3d_3_loss'])
mean_acc3d_strict_3 = np.mean(metrics['acc3d_strict_3'])
mean_acc3d_relax_3 = np.mean(metrics['acc3d_relax_3'])
mean_outlier_3 = np.mean(metrics['outlier_3'])
mean_epe3d_4 = np.mean(metrics['epe3d_4_loss'])
mean_acc3d_strict_4 = np.mean(metrics['acc3d_strict_4'])
mean_acc3d_relax_4 = np.mean(metrics['acc3d_relax_4'])
mean_outlier_4 = np.mean(metrics['outlier_4'])
mean_epe3d_list = [mean_epe3d_1, mean_epe3d_2, mean_epe3d_3, mean_epe3d_4]
mean_acc3d_strict_list = [mean_acc3d_strict_1, mean_acc3d_strict_2, mean_acc3d_strict_3, mean_acc3d_strict_4]
mean_acc3d_relax_list = [mean_acc3d_relax_1, mean_acc3d_relax_2, mean_acc3d_relax_3, mean_acc3d_relax_4]
mean_outlier_list = [mean_outlier_1, mean_outlier_2, mean_outlier_3, mean_outlier_4]
return mean_epe3d_list, mean_acc3d_strict_list, mean_acc3d_relax_list, mean_outlier_list, mean_eval
if __name__ == '__main__':
main()