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Test resize using opencv native library #20

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Test resize using opencv native library #20

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ea8be66
add resize test
ieee8023 May 20, 2020
2fa9ef8
fix function name
ieee8023 May 20, 2020
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19 changes: 19 additions & 0 deletions tests/test_dataloaders.py
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
import pytest
import torchxrayvision as xrv
from skimage.io import imread, imsave

dataset_classes = [xrv.datasets.NIH_Dataset,
xrv.datasets.PC_Dataset,
Expand Down Expand Up @@ -45,3 +46,21 @@ def test_dataloader_merging_incorrect_alignment():

assert "incorrect pathology alignment" in str(excinfo.value)


def test_resize():

for filename in ["16747_3_1.jpg", "covid-19-pneumonia-58-prior.jpg"]
img = imread(filename)
img = xrv.datasets.normalize(img, 255)

# Check that images are 2D arrays
if len(img.shape) > 2:
img = img[:, :, 0]

# Add color channel
img = img[None, :, :]

resize_ski = xrv.datasets.XRayResizer(100, engine="skimage")
resize_cv2 = xrv.datasets.XRayResizer(100, engine="cv2")

assert(np.allclose(resize_ski(img),resize_cv2(img)))