Keras:可视化ImageDataGenerator输出 [英] Keras: Visualize ImageDataGenerator Output

问题描述

我想看看ImageDataGenerator对我的网络产生了什么.

I would like to see what my ImageDataGenerator yields to my network.

修改:
删除了channel_shift_range，不小心将其留在了代码中

removed the channel_shift_range, accidently left it in the code

genNorm = ImageDataGenerator(rotation_range=10, width_shift_range=0.1, 
       height_shift_range=0.1, zoom_range=0.1, horizontal_flip=True)

获取批次

batches = genNorm.flow_from_directory(path+'train', target_size=(224,224),
      class_mode='categorical', batch_size=64)

x_batch, y_batch = next(batches)

绘制图像

for i in range (0,32):
    image = x_batch[i]
    plt.imshow(image.transpose(2,1,0))
    plt.show()

结果

发电机输出

这是正常现象吗，还是我在这里做错了什么?

Is this normal or am I doing something wrong here?

推荐答案

尝试一下；更改生成器，如下所示:

Try this; change the generator as follow:

import numpy as np

def my_preprocessing_func(img):
    image = np.array(img)
    return image / 255

genNorm = ImageDataGenerator(rotation_range=10, width_shift_range=0.1, 
       height_shift_range=0.1, zoom_range=0.1, horizontal_flip=True, 
       preprocessing_function=my_preprocessing_func)

对我有用，

布鲁诺

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