ImportError: cannot import name 'imresize'

[vk-mittal14]

While importing visualize_activation from vis.visualization I got this error from vis.visualization import visualize_activation

ImportError                               Traceback (most recent call last)
<ipython-input-3-8c45a7bcfdef> in <module>()
----> 1 from vis.visualization import visualize_activation
      2 from vis.utils import utils
      3 from keras import activations
      4 
      5 from matplotlib import pyplot as plt

1 frames
/usr/local/lib/python3.6/dist-packages/vis/visualization/__init__.py in <module>()
      5 from .activation_maximization import visualize_activation
      6 
----> 7 from .saliency import visualize_saliency_with_losses
      8 from .saliency import visualize_saliency
      9 from .saliency import visualize_cam_with_losses

/usr/local/lib/python3.6/dist-packages/vis/visualization/saliency.py in <module>()
      3 import numpy as np
      4 import matplotlib.cm as cm
----> 5 from scipy.misc import imresize
      6 
      7 from keras.layers.convolutional import _Conv

ImportError: cannot import name 'imresize'

[Mazzanicolas]

That's because imresize has been removed from scipy since v1.3.0rc1 What you can do is edit the code in vis/visualization/saliency.py to use other function to resize, such as opencv resize.

[keisen]

Or, As being mentioned in https://github.com/raghakot/keras-vis/issues/203#issuecomment-565582881 , you can downgrade scipy to 1.1.0 as follows:

pip install scipy==1.1.0

[ekamioka]

as @Mazzanicolas said:

in vis/visualization/saliency.py

replace: from scipy.misc import imresize

to: import cv2

then

replace: heatmap = imresize(heatmap, input_dims, interp='bicubic', mode='F')

to:

heatmap = cv2.resize(src=heatmap,
                       dsize=input_dims,
                       interpolation=cv2.INTER_CUBIC)

I just couldn't map the mode param.

[TiagoFilipeSousaGoncalves]

Another way of solving this (I did it myself and it's working quite well) is to use Pillow library: in vis/visualization/saliency.py

comment from scipy.misc import imresize

and add from PIL import Image

comment heatmap = imresize(heatmap, input_dims, interp='bicubic', mode='F')

Then, update the heatmap variable as such: heatmap = np.array(Image.fromarray(obj=heatmap, mode='F').resize(size=input_dims, resample=Image.BICUBIC))

Check SciPy: scipy.misc.imresize

And Pillow: Pillow Image Module

[TataMoktari]

Or, As being mentioned in #203 (comment) , you can downgrade scipy to 1.1.0 as follows:

pip install scipy==1.1.0
```It worked for me :) 

[manjitlal]

Check docs: scipy.misc.imresize - SciPy v1.2.1 Reference Guide imresize is deprecated! imresize is deprecated in SciPy 1.0.0, and will be removed in 1.3.0.

Check example: sample problem

If you are using scipy version earlier than 1.3.0, then try this (it worked for me, tested on version 0.19.1):

instead of:

... from scipy.misc import imresize ...

imresize()

do:

... from scipy import misc ...

misc.imresize()