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rm wt
1 parent a3e2562 commit d9b4105

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src/napari_tmidas/_tests/test_skimage_filters.py

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@@ -8,7 +8,6 @@
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resize_mask,
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rolling_ball_background,
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simple_thresholding,
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white_tophat,
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)
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@@ -89,20 +88,6 @@ def test_simple_thresholding_different_thresholds(self):
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class TestBrightRegionExtraction:
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"""Test suite for bright region extraction functions"""
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def test_white_tophat_basic(self):
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"""Test white top-hat transform extracts bright features"""
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# Create image with bright spot on dark background
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image = np.zeros((100, 100), dtype=np.uint8)
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image[40:60, 40:60] = 200 # Bright square
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image[45:55, 45:55] = 255 # Brighter center
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result = white_tophat(image, footprint_size=15)
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# Result should have bright features extracted
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assert result.shape == image.shape
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assert result.max() > 0 # Should have some bright regions
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assert result.sum() < image.sum() # Background removed
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def test_percentile_threshold_original(self):
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"""Test percentile thresholding with original values"""
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# Create image with gradient

src/napari_tmidas/processing_functions/skimage_filters.py

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@@ -521,48 +521,6 @@ def convert_to_uint8(image: np.ndarray) -> np.ndarray:
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if SKIMAGE_AVAILABLE:
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@BatchProcessingRegistry.register(
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name="White Top-Hat (Extract Bright Features)",
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suffix="_tophat",
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description="Extract bright features from background using morphological white top-hat transform",
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parameters={
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"footprint_size": {
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"type": int,
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"default": 15,
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"min": 3,
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"max": 101,
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"description": "Size of structuring element (larger removes bigger background features)",
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}
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},
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)
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def white_tophat(
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image: np.ndarray, footprint_size: int = 15
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) -> np.ndarray:
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"""
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Apply white top-hat transform to extract bright regions.
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The white top-hat transform extracts bright features that are smaller than
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the structuring element. It works by subtracting a morphological opening
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from the original image, effectively removing background and keeping only
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bright peaks and spots.
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Parameters:
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-----------
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image : numpy.ndarray
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Input image array
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footprint_size : int
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Size of the structuring element (disk). Larger values remove broader
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background variations and keep only the brightest local features.
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Returns:
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--------
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numpy.ndarray
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Image with bright features extracted and background removed
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"""
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# Create circular structuring element
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footprint = skimage.morphology.disk(footprint_size)
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return skimage.morphology.white_tophat(image, footprint=footprint)
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@BatchProcessingRegistry.register(
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name="Percentile Threshold (Keep Brightest)",
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suffix="_percentile",

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