extract_crack_features.ipynb tutorial is not working

[yahyaozturk]

I am playing with the repo, I managed to run some tutorials locally but was not able to run extract_crack_features.ipynb, it gives an error at inactive_area, inactive_prop = crackcell.extract_inactive_area()

Full stack trace is

---------------------------------------------------------------------------
IndexError                                Traceback (most recent call last)
[/var/folders/fs/xvl6y9652qgb_t8nfv9bxfvh0000gn/T/ipykernel_21232/2558548168.py](https://file+.vscode-resource.vscode-cdn.net/var/folders/fs/xvl6y9652qgb_t8nfv9bxfvh0000gn/T/ipykernel_21232/2558548168.py) in <module>
      1 # extract inactive area
----> 2 inactive_area, inactive_prop = crackcell.extract_inactive_area()
      3 plt.imshow(inactive_area, "gray")
      4 print("{}%".format(inactive_prop*100))

[/usr/local/lib/python3.9/site-packages/pv_vision/crack_analysis/crackcell.py](https://file+.vscode-resource.vscode-cdn.net/usr/local/lib/python3.9/site-packages/pv_vision/crack_analysis/crackcell.py) in extract_inactive_area(self)
     67     def extract_inactive_area(self):
     68         """Extract inactive area"""
---> 69         self.inactive_area, self.features["inactive_prop"] = isolate.detect_inactive(self.crack, self.busbar)
     70         return self.inactive_area, self.features["inactive_prop"]
     71 

[/usr/local/lib/python3.9/site-packages/pv_vision/crack_analysis/_feature_extraction.py](https://file+.vscode-resource.vscode-cdn.net/usr/local/lib/python3.9/site-packages/pv_vision/crack_analysis/_feature_extraction.py) in detect_inactive(mask_crack, mask_busbar, extend_kernel)
    223     ske_crack = skeleton_crack(mask_crack)
    224     ske_busbar = extend_busbar(mask_busbar, kernel_size=extend_kernel)
--> 225     pos_busbar = locate_busbar(ske_busbar)
    226     ske_cell = skeleton_cell(ske_crack, pos_busbar)
    227     cell_diff = diffuse(ske_cell, pos_busbar)

[/usr/local/lib/python3.9/site-packages/pv_vision/crack_analysis/_feature_extraction.py](https://file+.vscode-resource.vscode-cdn.net/usr/local/lib/python3.9/site-packages/pv_vision/crack_analysis/_feature_extraction.py) in locate_busbar(ske_busbar)
     63         numlist_busbar.append(len(np.argwhere(ske_busbar[:, i] == 1)))
     64 
---> 65     num_busbar = stats.mode(numlist_busbar).mode[0]
     66 
     67     pos_busbar = np.zeros((num_busbar, 1))

IndexError: invalid index to scalar variable.

I ran the tutorial as is but no luck so far.

P.S.I tried on 2 different laptops (macOS intel and M2) and multiple Python versions.

[X-Chen97]

Hello! Could you please share the cell image and annotation image you used for this tutorial? If you used my example images, there shouldn't be problems. Thanks!

[yahyaozturk]

I used the code as is (with your sample images) img_path='../examples/crack_segmentation/img_for_crack_analysis/sample_raw.jpg', ann_path='../examples/crack_segmentation/img_for_crack_analysis/sample_ann.png',

Once I ran below section

inactive_area, inactive_prop = crackcell.extract_inactive_area()
plt.imshow(inactive_area, "gray")
print("{}%".format(inactive_prop*100))

I am getting errors as mentioned in the previous message.

[X-Chen97]

fixed! Thank you for the comment