图片智能识别怎么创建

import tensorflow as tf
from tensorflow.keras.applications import MobileNetV2
from tensorflow.keras.layers import Dense, GlobalAveragePooling2D
from tensorflow.keras.models import Model

# 加载预训练模型
base_model = MobileNetV2(weights='imagenet', include_top=False)

# 添加自定义层
x = base_model.output
x = GlobalAveragePooling2D()(x)
x = Dense(1024, activation='relu')(x)
predictions = Dense(num_classes, activation='softmax')(x)

# 构建完整模型
model = Model(inputs=base_model.input, outputs=predictions)

# 冻结预训练层
for layer in base_model.layers:
    layer.trainable = False

# 编译模型
model.compile(optimizer='adam', loss='categorical_crossentropy', metrics=['accuracy'])

# 训练模型
model.fit(train_data, epochs=10, validation_data=val_data)