Keras:具有卷积层的自动编码器

from keras.layers import Input, Conv2D, MaxPooling2D, UpSampling2D
from keras.models import Model

# 定义输入图像的大小和通道数
input_img = Input(shape=(28, 28, 1))

# 编码器部分
x = Conv2D(32, (3, 3), activation='relu', padding='same')(input_img)
x = MaxPooling2D((2, 2), padding='same')(x)
x = Conv2D(32, (3, 3), activation='relu', padding='same')(x)
encoded = MaxPooling2D((2, 2), padding='same')(x)

# 解码器部分
x = Conv2D(32, (3, 3), activation='relu', padding='same')(encoded)
x = UpSampling2D((2, 2))(x)
x = Conv2D(32, (3, 3), activation='relu', padding='same')(x)
x = UpSampling2D((2, 2))(x)
decoded = Conv2D(1, (3, 3), activation='sigmoid', padding='same')(x)

# 构建自编码器模型
autoencoder = Model(input_img, decoded)

# 编译模型
autoencoder.compile(optimizer='adam', loss='binary_crossentropy')

# 训练模型
autoencoder.fit(x_train, x_train, epochs=50, batch_size=128, shuffle=True, validation_data=(x_test, x_test))