## 基于迁移学习的 DenseNet 图像分类项目
# 运行顺序,train.py ---> predict.py(无需设定参数)
# 项目不需要任何更改!!只需要将自定义数据集按照固定格式摆放好即可!!
# 如果是网上爬取下来的文件可能会损坏,运行 process_data.py 文件,会自动将损坏的图片提取出来
# 训练:代码直接运行 train.py 会自动训练,可以完全不用更改,分类的类别个数会自动生成
# 预测:直接运行 predict.py 文件即可,代码会自动预测 inference 文件夹下所以图像
1. 准备好自定义数据集,按照下面格式摆放
data-train---后面跟文件夹,每个文件夹里面存放相同的图像,几个文件夹代表几个分类
data-test
2. 在 `train.py` 脚本中更改下面超参数
# num_classes
# 冻结权重,因为数据集的不同,设定为True 网络的效果会更好。设置为False ,可以加快训练,并且精度也不会损失的太多
parser.add_argument('--epochs', type=int, default=100)
parser.add_argument('--batch-size', type=int, default=32)
parser.add_argument('--lr', type=float, default=0.01)
parser.add_argument('--lrf', type=float, default=0.01)
parser.add_argument('--freeze-layers', type=bool, default=False) # 是否冻结权重
# TODO 一些问题
预测脚本会重新导入训练集,计算train mean 和train std,这样难免会浪费时间
如果项目在实际环境中运行,可以训练好网络,在predict.py 脚本中,将 num_classes,mean,std 自己根据任务设定好,这样可以减少不必要的计算
model = create_model(num_classes=num_classes) # 根据分类个数更改
mean, std = get_mean_std() # 根据训练日志的 txt 文件更改
没有合适的资源?快使用搜索试试~ 我知道了~
温馨提示
内容概要:基于迁移学习的DenseNet169 对自定义数据集的分类网络,自定义数据集的使用只需要将数据集按照README文件摆放好即可以自动训练,train和predict的参数均不用更改,代码会自动计算图像分类的个数。网络会自动载入imageNet 22k的预训练权重,计算在训练集和测试集的损失和精度,训练完成后,模型会载入最好的权重文件计算混淆矩阵、精确度和召回率等等。模型在训练时候会生成loss和accuracy曲线 分类数据集为cat、dog、panda、giraffe四分类 适合人群:有深度学习经验的可以根据任务自行更改训练超参数、小白的话只需要配置好环境,运行train、predict脚本就行,不需要更改任何参数!! 能学到什么:DenseNet 网络的搭建、完整深度学习的训练步骤,混淆矩阵、loss、recall计算,cos衰减的学习率曲线绘制、网络在trainset和testset上的表现等等 阅读建议:此资源以pytorch框架搭建的深度分类网络模型,代码风格简单,文件夹的分类方便阅读。不仅仅可以快速扩展到自己的数据集,也可以根据需要的内容对代码进行更改
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