作业记录 WEEK7（上）
作者：互联网
Target
将CBAM加入到Face embedding model训练出一个可识别戴口罩人脸的人脸识别模型。
综合来说，就是在week06作业的基础上，在训练集中添加戴口罩的数据集。
Steps
数据集
训练数据集选择：VGGFACE2 的训练集 或者 VGGFACE2的测试集
- 下载完成vggfrace2_test.zip解压缩，得到vggface2_train文件夹
- 由于人脸检测，对齐需要预先处理，所以我们运行week06/image_processing.py，对图片进行检测对齐加口罩处理
- 这个时间耗时会非常长，注意时间安排。
- 代码功能一：对齐后的图片保存到vggface2_train_notmask文件夹内
- 代码功能二：对齐后的图片加口罩，保存到vggface2_train_mask文件夹内
- 再运行make_csv_file.py,生成csv文件，为生成triplet做准备。
- 运行 train_dataset.py 检查数据集是否正常。
和上周一样的数据集，感觉是直接修改路径比较方便。到时候看下。
加注意力机制模组，希望训练过程中，focus on没有口罩遮挡的部分。所以应该是要在上周的训练模型的基础上，增加CBAM，再使用带口罩的训练集去fine tune。
为了熟悉工程 决定直接把整个工程仓库clone下来。
README
目标是针对戴口罩的数据集训练一个模型。查看readme，
要求包含CBAM模组，并且输入是戴口罩的人脸，满足这两点的只有V1 V2 V9，因为输入是已经处理完毕的图片，所以只能是第二个版本或者第九个版本。目前还不清楚所谓的不同版本的face_attention提取层具体是指什么，先暂定采用V2试一下。
目标：看懂并跑通train_maskV2.py
1. import包和文件
# 路径置顶
import sys
import os
os.environ["CUDA_VISIBLE_DEVICES"] = "2"
sys.path.append(os.getcwd())
# 导入包
from torch.nn.modules.distance import PairwiseDistance
import torch.nn as nn
from tqdm import tqdm
import numpy as np
import torch
import time
# 导入文件
# from Models.Model_for_facenet import model, optimizer_model, start_epoch, flag_train_multi_gpu
from Data_loader.Data_loader_facenet_mask import test_dataloader,V9_train_dataloader
from Data_loader.Data_loader_facenet_mask import LFWestMask_dataloader
from Losses.Triplet_loss import TripletLoss
from validate_on_LFW import evaluate_lfw
from Data_loader.Data_loader_train_notmask import TrainDataset
from config_mask import config
from Models.CBAM_Face_attention_Resnet_maskV2 import resnet18_cbam, resnet50_cbam, resnet101_cbam, resnet34_cbam, \
resnet152_cbam
2. GPU环境配置、模型选择
注意这里为了避免通过外网下载resnet预训练模型造成速度缓慢，将pretrained参数设置为False了。实际应用的时候下载预训练模型是必要的
没有’Model_training_checkpoints’文件夹，新建一个；
pwd = os.path.abspath('./')
print("Using {} model architecture.".format(config['model']))
start_epoch = 0
#
if config['model'] == 18:
model = resnet18_cbam(pretrained=True, showlayer= False,num_classes=128) # 设置为False
elif config['model'] == 34:
model = resnet34_cbam(pretrained=True, showlayer= False, num_classes=128)
elif config['model'] == 50:
model = resnet50_cbam(pretrained=True, showlayer= False, num_classes=128)
elif config['model'] == 101:
model = resnet101_cbam(pretrained=True, showlayer= False, num_classes=128)
elif config['model'] == 152:
model = resnet152_cbam(pretrained=True, showlayer= False, num_classes=128)
model_path = os.path.join(pwd, 'Model_training_checkpoints')
x = [int(i.split('_')[4]) for i in os.listdir(model_path) if 'V2' in i]
x.sort()
for i in os.listdir(model_path):
if (len(x)!=0) and ('epoch_'+str(x[-1]) in i) and ('V2' in i):
model_pathi = os.path.join(model_path, i)
break
if os.path.exists(model_pathi) and ('V2' in model_pathi):
# model_state = torch.load(model_pathi)
# model.load_state_dict(model_state['model_state_dict'])
# start_epoch = model_state['epoch']
# print('loaded %s' % model_pathi)
model_state = torch.load(model_pathi)
# model.load_state_dict(model_state['model_state_dict'])
start_epoch = model_state['epoch']
now_state_dict = model.state_dict()
state_dict = {k: v for k, v in model_state.items() if (k in now_state_dict.keys()) and \
('fc.weight' not in now_state_dict.keys())}
now_state_dict.update(state_dict)
# now_state_dict.update(pretrained_state_dict)
model.load_state_dict(now_state_dict)
print('loaded %s' % model_pathi)
else:
print('不存在预训练模型！')
flag_train_gpu = torch.cuda.is_available()
flag_train_multi_gpu = False
if flag_train_gpu and torch.cuda.device_count() > 1:
model = nn.DataParallel(model)
model.cuda()
flag_train_multi_gpu = True
print('Using multi-gpu training.')
elif flag_train_gpu and torch.cuda.device_count() == 1:
model.cuda()
print('Using single-gpu training.')
3. 学习率（不管）
def adjust_learning_rate(optimizer, epoch):
if epoch<19:
lr = 0.125
elif (epoch>=19) and (epoch<60):
lr = 0.0625
elif (epoch >= 60) and (epoch < 90):
lr = 0.0155
elif (epoch >= 90) and (epoch < 120):
lr = 0.003
elif (epoch>=120) and (epoch<160):
lr = 0.0001
else:
lr = 0.00006
for param_group in optimizer.param_groups:
param_group['lr'] = lr
4. 优化器（不管）
def create_optimizer(model, new_lr):
# setup optimizer
if config['optimizer'] == "sgd":
optimizer_model = torch.optim.SGD(model.parameters(), lr = new_lr,
momentum=0.9, dampening=0.9,
weight_decay=0)
elif config['optimizer'] == "adagrad":
optimizer_model = torch.optim.Adagrad(model.parameters(), lr = new_lr,
lr_decay=1e-4,
weight_decay=0)
elif config['optimizer'] == "rmsprop":
optimizer_model = torch.optim.RMSprop(model.parameters(), lr = new_lr)
elif config['optimizer'] == "adam":
optimizer_model = torch.optim.Adam(model.parameters(), lr = new_lr,
weight_decay=0)
return optimizer_model
5. 准备训练：
# 随机种子
seed = 0
optimizer_model = create_optimizer(model, 0.125)
torch.manual_seed(seed) # 为CPU设置随机种子
torch.cuda.manual_seed(seed) # 为当前GPU设置随机种子
torch.cuda.manual_seed_all(seed) # 为所有GPU设置随机种子
np.random.seed(seed)
os.environ['PYTHONHASHSEED'] = str(seed)
# 打卡时间、epoch
total_time_start = time.time()
start_epoch = start_epoch
end_epoch = start_epoch + config['epochs']
# 导入l2计算的
l2_distance = PairwiseDistance(2).cuda()
# 为了打日志先预制个最佳auc和最佳acc在前头
best_roc_auc = -1
best_accuracy = -1
print('Countdown 3 seconds')
time.sleep(1)
print('Countdown 2 seconds')
time.sleep(1)
print('Countdown 1 seconds')
time.sleep(1)
6. 训练模型， 大循环epoch起点
# epoch大循环
for epoch in range(start_epoch, end_epoch):
print("\ntraining on TrainDataset! ...")
epoch_time_start = time.time()
triplet_loss_sum = 0
attention_loss_sum = 0
num_hard = 0
model.train() # 训练模式
# step小循环
progress_bar = enumerate(tqdm(V9_train_dataloader))
for batch_idx, (batch_sample) in progress_bar:
# for batch_idx, (batch_sample) in enumerate(train_dataloader):
# length = len(train_dataloader)
# fl=open('/home/Mask-face-recognitionV1/output.txt', 'w')
# for batch_idx, (batch_sample) in enumerate(train_dataloader):
# print(batch_idx, end=' ')
# fl.write(str(batch_idx)+' '+str(round((time.time()-epoch_time_start)*length/((batch_idx+1)*60), 2))+'； ')
# 获取本批次的数据
# 取出三张人脸图(batch*图)
anc_img = batch_sample['anc_img'].cuda()
pos_img = batch_sample['pos_img'].cuda()
neg_img = batch_sample['neg_img'].cuda()
# 取出三张mask图(batch*图)
mask_anc = batch_sample['mask_anc'].cuda()
mask_pos = batch_sample['mask_pos'].cuda()
mask_neg = batch_sample['mask_neg'].cuda()
# 模型运算
# 前向传播过程-拿模型分别跑三张图，生成embedding和loss（在训练阶段的输入是两张图，输出带loss，而验证阶段输入一张图，输出只有embedding）
anc_embedding, anc_attention_loss = model((anc_img, mask_anc))
pos_embedding, pos_attention_loss = model((pos_img, mask_pos))
neg_embedding, neg_attention_loss = model((neg_img, mask_neg))
anc_embedding = torch.div(anc_embedding, torch.norm(anc_embedding)) * 50
pos_embedding = torch.div(pos_embedding, torch.norm(pos_embedding)) * 50
neg_embedding = torch.div(neg_embedding, torch.norm(neg_embedding)) * 50
# 寻找困难样本
# 计算embedding的L2
pos_dist = l2_distance.forward(anc_embedding, pos_embedding)
neg_dist = l2_distance.forward(anc_embedding, neg_embedding)
# 找到满足困难样本标准的样本
all = (neg_dist - pos_dist < config['margin']).cpu().numpy().flatten()
hard_triplets = np.where(all == 1)
if len(hard_triplets[0]) == 0:
continue
# 选定困难样本——困难embedding
anc_hard_embedding = anc_embedding[hard_triplets].cuda()
pos_hard_embedding = pos_embedding[hard_triplets].cuda()
neg_hard_embedding = neg_embedding[hard_triplets].cuda()
# 选定困难样本——困难样本对应的attention loss
hard_anc_attention_loss = anc_attention_loss[hard_triplets]
hard_pos_attention_loss = pos_attention_loss[hard_triplets]
hard_neg_attention_loss = neg_attention_loss[hard_triplets]
# 损失计算
# 计算这个批次困难样本的三元损失
triplet_loss = TripletLoss(margin=config['margin']).forward(
anchor=anc_hard_embedding,
positive=pos_hard_embedding,
negative=neg_hard_embedding
).cuda()
# triplet_loss = TripletLoss(margin=config['margin']).forward(
# anchor=anc_embedding,
# positive=pos_embedding,
# negative=neg_embedding
# ).cuda()
# 计算这个批次困难样本的attention loss（这个loss实际上在forward过程里已经计算了，这里就是整合一下求个mean）
hard_attention_loss = torch.cat([hard_anc_attention_loss, hard_pos_attention_loss, hard_neg_attention_loss])
# hard_attention_loss = torch.cat([anc_attention_loss, pos_attention_loss, neg_attention_loss])
hard_attention_loss = torch.mean(hard_attention_loss).cuda()
hard_attention_loss = hard_attention_loss.type(torch.FloatTensor)
# 计算总顺势
LOSS = triplet_loss + hard_attention_loss
# LOSS = triplet_loss
# 反向传播过程
optimizer_model.zero_grad()
LOSS.backward()
optimizer_model.step()
# update the optimizer learning rate
adjust_learning_rate(optimizer_model, epoch)
# 记录log相关信息
# 计算本个批次内的困难样本数量
num_hard += len(anc_hard_embedding)
# 计算这个epoch内的总三元损失和计算损失所用的困难样本个数
triplet_loss_sum += triplet_loss.item()
attention_loss_sum += hard_attention_loss.item()
# if batch_idx>10:
# break
# if batch_idx==9:
# tim = time.time() - epoch_time_start
# print("需要的时间是：",round((tim*length)/600,2),"分钟")
# fl.close()
# 计算这个epoch里的平均损失
avg_triplet_loss = 0 if (num_hard == 0) else triplet_loss_sum / num_hard
avg_attention_loss = 0 if (num_hard == 0) else attention_loss_sum / num_hard
avg_loss = avg_triplet_loss + avg_attention_loss
epoch_time_end = time.time()
7. 测试模型，仍然在epoch中
# 出测试集准确度
print("Validating on TestDataset! ...")
model.eval() # 验证模式
with torch.no_grad(): # 不传梯度了
distances, labels = [], []
progress_bar = enumerate(tqdm(test_dataloader))
for batch_index, (data_a, data_b, label) in progress_bar:
# data_a, data_b, label这仨是一批的矩阵
data_a = data_a.cuda()
data_b = data_b.cuda()
label = label.cuda()
output_a, output_b = model(data_a), model(data_b)
output_a = torch.div(output_a, torch.norm(output_a))
output_b = torch.div(output_b, torch.norm(output_b))
distance = l2_distance.forward(output_a, output_b)
# 列表里套矩阵
labels.append(label.cpu().detach().numpy())
distances.append(distance.cpu().detach().numpy())
# 展平
labels = np.array([sublabel for label in labels for sublabel in label])
distances = np.array([subdist for distance in distances for subdist in distance])
true_positive_rate, false_positive_rate, precision, recall, accuracy, roc_auc, best_distances, \
tar, far = evaluate_lfw(
distances=distances,
labels=labels,
epoch = 'epoch_'+str(epoch),
tag = 'NOTMaskedLFW_auc',
version = 'V2',
pltshow=True
)
print("Validating on LFWMASKTestDataset! ...")
with torch.no_grad(): # 不传梯度了
distances, labels = [], []
progress_bar = enumerate(tqdm(LFWestMask_dataloader))
for batch_index, (data_a, data_b, label) in progress_bar:
# data_a, data_b, label这仨是一批的矩阵
data_a = data_a.cuda()
data_b = data_b.cuda()
label = label.cuda()
output_a, output_b = model(data_a), model(data_b)
output_a = torch.div(output_a, torch.norm(output_a))
output_b = torch.div(output_b, torch.norm(output_b))
distance = l2_distance.forward(output_a, output_b)
# 列表里套矩阵
labels.append(label.cpu().detach().numpy())
distances.append(distance.cpu().detach().numpy())
# 展平
labels = np.array([sublabel for label in labels for sublabel in label])
distances = np.array([subdist for distance in distances for subdist in distance])
true_positive_rate_mask, false_positive_rate_mask, precision_mask, recall_mask, \
accuracy_mask, roc_auc_mask, best_distances_mask, \
tar_mask, far_mask = evaluate_lfw(
distances=distances,
labels=labels,
epoch = 'epoch_'+str(epoch),
tag = 'MaskedLFW_auc',
version = 'V2',
pltshow=True
)
8. 打印log，保存模型，仍然在epoch中，是epoch的最后一部分
# 打印并保存日志
# 从之前的文件里读出来最好的roc和acc，并进行更新
if os.path.exists('logs/lfw_{}_log_tripletnotmaskV2.txt'.format(config['model'])):
with open('logs/lfw_{}_log_tripletnotmaskV2.txt'.format(config['model']), 'r') as f:
lines = f.readlines()
my_line = lines[-3]
my_line = my_line.split('\t')
best_roc_auc = float(my_line[3].split(':')[1])
best_accuracy = float(my_line[5].split(':')[1])
# 确定什么时候保存权重：最后一个epoch就保存，AUC出现新高就保存
save = True
if config['save_last_model'] and epoch == end_epoch - 1:
save = True
if roc_auc > best_roc_auc:
best_roc_auc = roc_auc
save = True
if np.mean(accuracy) > best_accuracy:
best_accuracy = np.mean(accuracy)
if epoch % 3 == 0:
save = True
print('save: ', save)
# 打印日志内容
print('Epoch {}:\n \
train_log:\tLOSS: {:.3f}\ttri_loss: {:.3f}\tatt_loss: {:.3f}\thard_sample: {}\ttrain_time: {}\n \
test_log:\tAUC: {:.3f}\tACC: {:.3f}+-{:.3f}\trecall: {:.3f}+-{:.3f}\tPrecision {:.3f}+-{:.3f}\t'.format(
epoch + 1,
avg_loss,
avg_triplet_loss,
avg_attention_loss,
num_hard,
(epoch_time_end - epoch_time_start) / 3600,
roc_auc,
np.mean(accuracy),
np.std(accuracy),
np.mean(recall),
np.std(recall),
np.mean(precision),
np.std(precision),
)
)
# 打印戴口罩日志内容
print('Epoch {}:\n \
train_log:\tLOSS: {:.3f}\ttri_loss: {:.3f}\tatt_loss: {:.3f}\thard_sample: {}\ttrain_time: {}\n \
MASKED_LFW_test_log:\tAUC: {:.3f}\tACC: {:.3f}+-{:.3f}\trecall: {:.3f}+-{:.3f}\tPrecision {:.3f}+-{:.3f}\t'.format(
epoch + 1,
avg_loss,
avg_triplet_loss,
avg_attention_loss,
num_hard,
(epoch_time_end - epoch_time_start) / 3600,
roc_auc_mask,
np.mean(accuracy_mask),
np.std(accuracy_mask),
np.mean(recall_mask),
np.std(recall_mask),
np.mean(precision_mask),
np.std(precision_mask),
)
)
# 保存日志文件
with open('logs/lfw_{}_log_tripletnotmaskV2.txt'.format(config['model']), 'a') as f:
val_list = [
'epoch: ' + str(epoch + 1) + '\t',
'train:\t',
'LOSS: ' + str('%.3f' % avg_loss) + '\t',
'tri_loss: ' + str('%.3f' % avg_triplet_loss) + '\t',
'att_loss: ' + str('%.3f' % avg_attention_loss) + '\t',
'hard_sample: ' + str(num_hard) + '\t',
'train_time: ' + str('%.3f' % ((epoch_time_end - epoch_time_start) / 3600))
]
log = ''.join(str(value) for value in val_list)
f.writelines(log + '\n')
val_list = [
'epoch: ' + str(epoch + 1) + '\t',
'test:\t',
'auc_masked: ' + str('%.3f' % roc_auc_mask) + '\t',
'best_auc_MD: ' + str('%.3f' % best_roc_auc) + '\t',
'acc_MD: ' + str('%.3f' % np.mean(accuracy_mask)) + '+-' + str('%.3f' % np.std(accuracy_mask)) + '\t',
'best_acc_MD: ' + str('%.3f' % best_accuracy) + '\t',
'recall_MD: ' + str('%.3f' % np.mean(recall_mask)) + '+-' + str('%.3f' % np.std(recall_mask)) + '\t',
'precision_MD: ' + str('%.3f' % np.mean(precision_mask)) + '+-' + str(
'%.3f' % np.std(precision_mask)) + '\t',
'best_distances_MD: ' + str('%.3f' % np.mean(best_distances_mask)) + '+-' + str(
'%.3f' % np.std(best_distances_mask)) + '\t',
'tar_m: ' + str('%.3f' % np.mean(tar_mask)) + '\t',
]
log = ''.join(str(value) for value in val_list)
f.writelines(log + '\n')
val_list = [
'epoch: ' + str(epoch + 1) + '\t',
'test:\t',
'auc: ' + str('%.3f' % roc_auc) + '\t',
'best_auc: ' + str('%.3f' % best_roc_auc) + '\t',
'acc: ' + str('%.3f' % np.mean(accuracy)) + '+-' + str('%.3f' % np.std(accuracy)) + '\t',
'best_acc: ' + str('%.3f' % best_accuracy) + '\t',
'recall: ' + str('%.3f' % np.mean(recall)) + '+-' + str('%.3f' % np.std(recall)) + '\t',
'precision: ' + str('%.3f' % np.mean(precision)) + '+-' + str('%.3f' % np.std(precision)) + '\t',
'best_distances: ' + str('%.3f' % np.mean(best_distances)) + '+-' + str(
'%.3f' % np.std(best_distances)) + '\t',
'tar_m: ' + str('%.3f' % np.mean(tar)) + '\t',
]
log = ''.join(str(value) for value in val_list)
f.writelines(log + '\n')
val_list = [
'epoch: ' + str(epoch + 1) + '\t',
'config:\t',
'LR: ' + str(config['Learning_rate']) + '\t',
'optimizer: ' + str(config['optimizer']) + '\t',
'embedding_dim: ' + str(config['embedding_dim']) + '\t',
'pretrained: ' + str(config['pretrained']) + '\t',
'image_size: ' + str(config['image_size'])
]
log = ''.join(str(value) for value in val_list)
f.writelines(log + '\n' + '\n')
# 保存模型权重
if save:
state = {
'epoch': epoch + 1,
'embedding_dimension': config['embedding_dim'],
'batch_size_training': config['train_batch_size'],
'model_state_dict': model.state_dict(),
'model_architecture': config['model'],
'optimizer_model_state_dict': optimizer_model.state_dict()
}
#
if flag_train_multi_gpu:
state['model_state_dict'] = model.module.state_dict()
# For storing best euclidean distance threshold during LFW validation
# if flag_validate_lfw:
# state['best_distance_threshold'] = np.mean(best_distances)
#
torch.save(state, 'Model_training_checkpoints/model_{}_triplet_epoch_{}_rocNotMasked{:.3f}_rocMasked{:.3f}notmaskV2.pt'.format(config['model'],
epoch + 1,
roc_auc, roc_auc_mask))
# Training loop end
9. 结束，打印时间信息，epoch之外了
total_time_end = time.time()
total_time_elapsed = total_time_end - total_time_start
print("\nTraining finished: total time elapsed: {:.2f} hours.".format(total_time_elapsed / 3600))
0. config_mask.py
核心任务：修改config。
config = dict()
# 测试路径（不戴口罩）
# config['train_data_path'] = 'datasets_test/test_train'
# config['train_data_index'] = 'datasets_test/test_train.csv'
# config['train_triplets_path'] = 'datasets/test_train.npy'
# config['LFW_data_path'] = 'datasets_test/lfw_funneled'
# config['LFW_pairs'] = 'datasets_test/LFW_pairs.txt'
config['resume_path'] = ''#'Model_training_checkpoints/model_resnet34_cheahom_triplet_epoch_20_roc0.9337.pt'
config['model'] = 18 # 18 34 50 101 152
config['optimizer'] = 'adagrad' # sgd\adagrad\rmsprop\adam
config['predicter_path'] = 'Data_preprocessing/shape_predictor_68_face_landmarks.dat'
config['Learning_rate'] = 0.00001
config['image_size'] = 256 # inceptionresnetv2————299
config['epochs'] = 19 #验证集的AUC达到最大时就可以停止训练了不要过拟合
config['train_batch_size'] = 38#130
config['test_batch_size'] = 38
config['margin'] = 0.5
config['embedding_dim'] = 128
config['pretrained'] = False
config['save_last_model'] = True
config['num_train_triplets'] = 1000 #git clone代码里面的图片数量少所以三元组数量少，下载全部图片数据以后，需要设置为100000
config['num_workers'] = 0
config['train_data_path'] = 'Datasets/vggface2_train_face_mask'
config['mask_data_path'] = 'Datasets/vggface2_train_mask_mask'
# 这边没有这个文件 要单独生成一下
config['train_data_index'] = 'Datasets/vggface2_train_face_mask.csv'
# 这边没有这个文件 要单独生成一下
config['train_triplets_path'] = 'Datasets/training_triplets_' + str(config['num_train_triplets']) + 'mask.npy'
config['test_pairs_paths'] = 'Datasets/test_pairs_1.npy' # 测试部分先不动 按照上周结果使用
config['LFW_data_path'] = 'Datasets/lfw_funneled'
config['LFW_pairs'] = 'Datasets/LFW_pairs.txt' # 修改文件名 放入Dataset文件夹
修改model 为18，因为之前做的是基于resnet18的，为了对比看提升，这次也用18来做；
还有一个原因就是本地有之前下载过的resnet18预训练模型可以直接上传用，不需要再下载了。
epoch为了省时间，先设置为19；
num_workers = 0，防止各种错误出现；
config[‘resume_path’] : 暂时不知道有什么用，整份代码 ctrl+f 并没有发现用到这个变量的地方。
训练集的csv文件还没有生成，triplets文件也没有生成。先生成。
生成csv；
按照之前的经验，应当是有一个train_dataset.py来生成三元子的，但是这次工程目录中没有这个文件。查找一下发现是在dataloader里。
标签：loss,记录,作业,epoch,str,model,config,3f,WEEK7 来源： https://blog.csdn.net/qq_34131692/article/details/114714880