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# Copyright (c) DataLab Platform Developers, BSD 3-Clause license, see LICENSE file.
"""
Unit tests for morphology computation functions.
"""
from __future__ import annotations
from typing import Callable
import pytest
from skimage import morphology
import sigima.objects
import sigima.params
import sigima.proc.image
from sigima.tests.data import get_test_image
from sigima.tests.helpers import check_array_result
def __generic_morphology_validation(
func: Callable[
[sigima.objects.ImageObj, sigima.params.MorphologyParam],
sigima.objects.ImageObj,
],
) -> None:
"""Generic test for morphology methods."""
# See [1] in sigima\tests\image\__init__.py for more details about the validation.
src = get_test_image("flower.npy")
p = sigima.params.MorphologyParam.create(radius=10)
dst: sigima.objects.ImageObj = func(src, p)
method = func.__name__
exp = getattr(morphology, method)(src.data, footprint=morphology.disk(p.radius))
check_array_result(f"{method.capitalize()}[radius={p.radius}]", dst.data, exp)
@pytest.mark.validation
def test_white_tophat() -> None:
"""Validation test for the image white top-hat processing."""
__generic_morphology_validation(sigima.proc.image.white_tophat)
@pytest.mark.validation
def test_black_tophat() -> None:
"""Validation test for the image black top-hat processing."""
__generic_morphology_validation(sigima.proc.image.black_tophat)
@pytest.mark.validation
def test_erosion() -> None:
"""Validation test for the image erosion processing."""
__generic_morphology_validation(sigima.proc.image.erosion)
@pytest.mark.validation
def test_dilation() -> None:
"""Validation test for the image dilation processing."""
__generic_morphology_validation(sigima.proc.image.dilation)
@pytest.mark.validation
def test_opening() -> None:
"""Validation test for the image opening processing."""
__generic_morphology_validation(sigima.proc.image.opening)
@pytest.mark.validation
def test_closing() -> None:
"""Validation test for the image closing processing."""
__generic_morphology_validation(sigima.proc.image.closing)
if __name__ == "__main__":
test_white_tophat()
test_black_tophat()
test_erosion()
test_dilation()
test_opening()
test_closing()
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