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Make opencv import optional #319

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merged 3 commits into from
Oct 17, 2022
Merged

Make opencv import optional #319

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e28f86a
Make opencv import optional
adehecq Oct 14, 2022
86ee17e
Need to import as cv to match previous syntax
rhugonnet Oct 16, 2022
c1fe496
Replace cv with cv2
adehecq Oct 17, 2022
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10 changes: 9 additions & 1 deletion xdem/filters.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,12 @@

import warnings

import cv2 as cv
try:
import cv2 as cv

_has_cv2 = True
except ImportError:
_has_cv2 = False
import numpy as np
import scipy

Expand Down Expand Up @@ -65,6 +70,9 @@ def gaussian_filter_cv(array: NDArrayf, sigma: float) -> NDArrayf:

:returns: the filtered array (same shape as input)
"""
if not _has_cv2:
raise ValueError("Optional dependency needed. Install 'opencv'")

# Check that array dimension is 2, or can be squeezed to 2D
orig_shape = array.shape
if len(orig_shape) == 2:
Expand Down