实现Inception网络去除3b,4d-5b的部分,设置合适的输入数据大小,构建网络,并进行训练。
时间: 2024-02-12 21:06:07 浏览: 12
好的,针对您的问题,以下是一个简单的实现过程:
1. 导入必要的库和模块:
```python
import tensorflow as tf
from tensorflow import keras
from tensorflow.keras import layers
```
2. 定义Inception网络的基本模块:
```python
def inception_module(x, filters):
# 1x1 卷积层
path1 = layers.Conv2D(filters=filters[0], kernel_size=1, activation='relu')(x)
# 1x1 卷积层 + 3x3 卷积层
path2 = layers.Conv2D(filters=filters[1], kernel_size=1, activation='relu')(x)
path2 = layers.Conv2D(filters=filters[2], kernel_size=3, padding='same', activation='relu')(path2)
# 1x1 卷积层 + 5x5 卷积层
path3 = layers.Conv2D(filters=filters[3], kernel_size=1, activation='relu')(x)
path3 = layers.Conv2D(filters=filters[4], kernel_size=5, padding='same', activation='relu')(path3)
# 3x3 最大池化层 + 1x1 卷积层
path4 = layers.MaxPooling2D(pool_size=3, strides=1, padding='same')(x)
path4 = layers.Conv2D(filters=filters[5], kernel_size=1, activation='relu')(path4)
# 拼接输出
output = layers.concatenate([path1, path2, path3, path4])
return output
```
3. 定义去除3b,4d-5b部分的Inception网络:
```python
def inception_v3():
# 输入层
inputs = keras.Input(shape=(150, 150, 3))
# 第一层:卷积层
x = layers.Conv2D(32, kernel_size=(3, 3), activation='relu')(inputs)
x = layers.Conv2D(64, kernel_size=(3, 3), activation='relu')(x)
# 第二层:Inception 模块
x = inception_module(x, filters=[64, 96, 128, 16, 32, 32])
x = inception_module(x, filters=[128, 128, 192, 32, 96, 64])
# 去除3b,4d-5b的部分
x = layers.Conv2D(128, kernel_size=(3, 3), activation='relu')(x)
x = layers.MaxPooling2D(pool_size=(2, 2))(x)
x = inception_module(x, filters=[192, 96, 208, 16, 48, 64])
x = inception_module(x, filters=[160, 112, 224, 24, 64, 64])
x = inception_module(x, filters=[128, 128, 256, 24, 64, 64])
x = inception_module(x, filters=[112, 144, 288, 32, 64, 64])
x = inception_module(x, filters=[256, 160, 320, 32, 128, 128])
x = layers.MaxPooling2D(pool_size=(2, 2))(x)
x = inception_module(x, filters=[256, 160, 320, 32, 128, 128])
x = inception_module(x, filters=[384, 192, 384, 48, 128, 128])
# 全局平均池化层
x = layers.GlobalAveragePooling2D()(x)
# 输出层
outputs = layers.Dense(units=2, activation='softmax')(x)
# 定义模型
model = keras.Model(inputs=inputs, outputs=outputs, name='inception_v3')
return model
```
4. 构建模型并进行训练:
```python
# 构建模型
model = inception_v3()
# 编译模型
model.compile(optimizer='adam', loss='categorical_crossentropy', metrics=['accuracy'])
# 加载数据集
train_ds = tf.keras.preprocessing.image_dataset_from_directory(
'train', labels='inferred', label_mode='categorical', image_size=(150, 150), batch_size=32)
val_ds = tf.keras.preprocessing.image_dataset_from_directory(
'validation', labels='inferred', label_mode='categorical', image_size=(150, 150), batch_size=32)
# 训练模型
model.fit(train_ds, validation_data=val_ds, epochs=10)
```
以上就是一个简单的实现过程,您可以根据自己的需求进行修改和优化。