37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
import numpy as np
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from tests.node_tests._shared import make_field
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def test_threshold_mask():
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from backend.nodes.mask_threshold import ThresholdMask
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node = ThresholdMask()
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data = np.zeros((64, 64))
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data[:, 32:] = 1.0
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field = make_field(data=data)
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previews = []
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ThresholdMask._broadcast_fn = lambda nid, uri: previews.append(uri)
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ThresholdMask._current_node_id = "test"
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mask, table = node.process(field, method="absolute", threshold=0.5, direction="above")
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assert mask.dtype == np.uint8
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assert mask.shape == (64, 64)
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assert np.all(mask[:, :32] == 0)
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assert np.all(mask[:, 32:] == 255)
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assert len(previews) == 1
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assert previews[0].startswith("data:image/png;base64,")
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mask_below, _ = node.process(field, method="absolute", threshold=0.5, direction="below")
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assert np.all(mask_below[:, :32] == 255)
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assert np.all(mask_below[:, 32:] == 0)
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mask_rel, _ = node.process(field, method="relative", threshold=0.5, direction="above")
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assert np.all(mask_rel[:, 32:] == 255)
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mask_otsu, _ = node.process(field, method="otsu", threshold=0.0, direction="above")
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assert mask_otsu[:, 32:].sum() > mask_otsu[:, :32].sum()
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ThresholdMask._broadcast_fn = None
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