flow_from_director生成RGB图像的通道在第三维,而神经网络要求的通道数在第一个维度,请问何如调整 程序: train_generator = train_datagen.flow_from_directory( target_size=(img_height, img_width), batch_size=batch_size, class_mode='categorical') validation_generator = test_datagen.flow_from_directory( validation_data_dir, target_size=(img_height, img_width), batch_size=batch_size, class_mode='categorical')
报错为:ValueError: Error when checking input: expected input_1 to have shape (3, 200, 200) but got array with shape (200, 200, 3)