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nbmorph

TestsPyPI version

A small, Numba-accelerated Python package for morphological operations on 3D labeled images.

nbmorph provides a set of common morphological operations optimized for performance using Numba. It is designed to work with 3D NumPy arrays representing labeled image data, where different integer labels correspond to different objects.

Features

  • Numba-accelerated and multithreaded: Operations are just-in-time compiled with Numba for high performance on CPUs.

  • 3D Label Image Support: All operations are designed for 3D labeled images (integer NumPy arrays).

  • Quasi-Spherical Structuring Elements: Approximates spherical structuring elements by alternating between box and diamond kernels for dilation and erosion.

  • Core Morphological Operations:

    • dilate_labels_spherical: Expands the boundaries of labeled regions by assigning the mode of the neighborhood to background voxels.

    • erode_labels_spherical: Shrinks the boundaries of labeled regions.

    • open_labels_spherical: Removes small noise and thin protrusions (erosion followed by dilation).

    • close_labels_spherical: Fills small holes within objects (dilation followed by erosion).

    • smooth_labels_spherical: Smoothes object boundaries by performing an opening followed by a closing.

  • Mode (majority) filters: Stencil-based mode filters built on top of compile-time sorting networks for fast, fixed-size neighborhoods. Each comes in two variants:

    • onlyzero_mode_box / onlyzero_mode_diamond: Fill only background (zero) voxels with the mode of their 3x3x3 box or 6-connected diamond neighborhood, leaving labeled voxels unchanged.

    • mode_box / mode_diamond: Replace every voxel with the mode of its neighborhood (including the center), useful for denoising labeled volumes.

Effect of Morphological SmoothingDemonstration of the smoothing effect with varying radii and iterations on a sample image. The smoothing is followed by a dilation operation to fill up the empty space.

Installation

You can install nbmorph directly from pypi using pip:

pip install nbmorph

Usage

Here is a basic example of how to use nbmorph to apply operations to a 3D labeled image.

import numpy as np
import nbmorph
import numba
numba.set_num_threads(4)
# Create a sample 3D labeled image
# For example, a 5x5x5 cube of two different labels in a 10x10x10 volume
labels = np.zeros((10, 10, 10), dtype=np.uint16)
labels[2:7, 2:7, 2:5] = 1
labels[2:7, 2:7, 5:7] = 2
# First execution may take a while due to numba compilation
# Apply morphological erosion with a radius of 1
eroded_labels = nbmorph.erode_labels_spherical(labels, radius=1)
# Apply morphological dilation with a radius of 1
dilated_labels = nbmorph.dilate_labels_spherical(labels, radius=1)
# Apply morphological opening with a radius of 1
opened_labels = nbmorph.open_labels_spherical(labels, radius=1)
# Apply morphological closing with a radius of 1
closed_labels = nbmorph.close_labels_spherical(labels, radius=1)
# Apply morphological smoothing with a radius of 1
smoothed_labels = nbmorph.smooth_labels_spherical(labels, radius=1)

Testing

Tests are written using pytest. To run the tests, first install the test dependencies and then run pytest:

pip install .[test]
pytest

Benchmarking

A benchmark script is included in the scripts directory:

python scripts/benchmark.py

License

This project is licensed under the MIT License - see the LICENSE file for details.

About

No description, website, or topics provided.

Resources

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1 star

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0 watching

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
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}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
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nbmorph

TestsPyPI version

A small, Numba-accelerated Python package for morphological operations on 3D labeled images.

nbmorph provides a set of common morphological operations optimized for performance using Numba. It is designed to work with 3D NumPy arrays representing labeled image data, where different integer labels correspond to different objects.

Features

  • Numba-accelerated and multithreaded: Operations are just-in-time compiled with Numba for high performance on CPUs.

  • 3D Label Image Support: All operations are designed for 3D labeled images (integer NumPy arrays).

  • Quasi-Spherical Structuring Elements: Approximates spherical structuring elements by alternating between box and diamond kernels for dilation and erosion.

  • Core Morphological Operations:

    • dilate_labels_spherical: Expands the boundaries of labeled regions by assigning the mode of the neighborhood to background voxels.

    • erode_labels_spherical: Shrinks the boundaries of labeled regions.

    • open_labels_spherical: Removes small noise and thin protrusions (erosion followed by dilation).

    • close_labels_spherical: Fills small holes within objects (dilation followed by erosion).

    • smooth_labels_spherical: Smoothes object boundaries by performing an opening followed by a closing.

  • Mode (majority) filters: Stencil-based mode filters built on top of compile-time sorting networks for fast, fixed-size neighborhoods. Each comes in two variants:

    • onlyzero_mode_box / onlyzero_mode_diamond: Fill only background (zero) voxels with the mode of their 3x3x3 box or 6-connected diamond neighborhood, leaving labeled voxels unchanged.

    • mode_box / mode_diamond: Replace every voxel with the mode of its neighborhood (including the center), useful for denoising labeled volumes.

Effect of Morphological SmoothingDemonstration of the smoothing effect with varying radii and iterations on a sample image. The smoothing is followed by a dilation operation to fill up the empty space.

Installation

You can install nbmorph directly from pypi using pip:

pip install nbmorph

Usage

Here is a basic example of how to use nbmorph to apply operations to a 3D labeled image.

import numpy as np
import nbmorph
import numba
numba.set_num_threads(4)
# Create a sample 3D labeled image
# For example, a 5x5x5 cube of two different labels in a 10x10x10 volume
labels = np.zeros((10, 10, 10), dtype=np.uint16)
labels[2:7, 2:7, 2:5] = 1
labels[2:7, 2:7, 5:7] = 2
# First execution may take a while due to numba compilation
# Apply morphological erosion with a radius of 1
eroded_labels = nbmorph.erode_labels_spherical(labels, radius=1)
# Apply morphological dilation with a radius of 1
dilated_labels = nbmorph.dilate_labels_spherical(labels, radius=1)
# Apply morphological opening with a radius of 1
opened_labels = nbmorph.open_labels_spherical(labels, radius=1)
# Apply morphological closing with a radius of 1
closed_labels = nbmorph.close_labels_spherical(labels, radius=1)
# Apply morphological smoothing with a radius of 1
smoothed_labels = nbmorph.smooth_labels_spherical(labels, radius=1)

Testing

Tests are written using pytest. To run the tests, first install the test dependencies and then run pytest:

pip install .[test]
pytest

Benchmarking

A benchmark script is included in the scripts directory:

python scripts/benchmark.py

License

This project is licensed under the MIT License - see the LICENSE file for details.

About

No description, website, or topics provided.

Resources

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1 star

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0 watching

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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nbmorph

TestsPyPI version

A small, Numba-accelerated Python package for morphological operations on 3D labeled images.

nbmorph provides a set of common morphological operations optimized for performance using Numba. It is designed to work with 3D NumPy arrays representing labeled image data, where different integer labels correspond to different objects.

Features

  • Numba-accelerated and multithreaded: Operations are just-in-time compiled with Numba for high performance on CPUs.

  • 3D Label Image Support: All operations are designed for 3D labeled images (integer NumPy arrays).

  • Quasi-Spherical Structuring Elements: Approximates spherical structuring elements by alternating between box and diamond kernels for dilation and erosion.

  • Core Morphological Operations:

    • dilate_labels_spherical: Expands the boundaries of labeled regions by assigning the mode of the neighborhood to background voxels.

    • erode_labels_spherical: Shrinks the boundaries of labeled regions.

    • open_labels_spherical: Removes small noise and thin protrusions (erosion followed by dilation).

    • close_labels_spherical: Fills small holes within objects (dilation followed by erosion).

    • smooth_labels_spherical: Smoothes object boundaries by performing an opening followed by a closing.

  • Mode (majority) filters: Stencil-based mode filters built on top of compile-time sorting networks for fast, fixed-size neighborhoods. Each comes in two variants:

    • onlyzero_mode_box / onlyzero_mode_diamond: Fill only background (zero) voxels with the mode of their 3x3x3 box or 6-connected diamond neighborhood, leaving labeled voxels unchanged.

    • mode_box / mode_diamond: Replace every voxel with the mode of its neighborhood (including the center), useful for denoising labeled volumes.

Effect of Morphological SmoothingDemonstration of the smoothing effect with varying radii and iterations on a sample image. The smoothing is followed by a dilation operation to fill up the empty space.

Installation

You can install nbmorph directly from pypi using pip:

pip install nbmorph

Usage

Here is a basic example of how to use nbmorph to apply operations to a 3D labeled image.

import numpy as np
import nbmorph
import numba
numba.set_num_threads(4)
# Create a sample 3D labeled image
# For example, a 5x5x5 cube of two different labels in a 10x10x10 volume
labels = np.zeros((10, 10, 10), dtype=np.uint16)
labels[2:7, 2:7, 2:5] = 1
labels[2:7, 2:7, 5:7] = 2
# First execution may take a while due to numba compilation
# Apply morphological erosion with a radius of 1
eroded_labels = nbmorph.erode_labels_spherical(labels, radius=1)
# Apply morphological dilation with a radius of 1
dilated_labels = nbmorph.dilate_labels_spherical(labels, radius=1)
# Apply morphological opening with a radius of 1
opened_labels = nbmorph.open_labels_spherical(labels, radius=1)
# Apply morphological closing with a radius of 1
closed_labels = nbmorph.close_labels_spherical(labels, radius=1)
# Apply morphological smoothing with a radius of 1
smoothed_labels = nbmorph.smooth_labels_spherical(labels, radius=1)

Testing

Tests are written using pytest. To run the tests, first install the test dependencies and then run pytest:

pip install .[test]
pytest

Benchmarking

A benchmark script is included in the scripts directory:

python scripts/benchmark.py

License

This project is licensed under the MIT License - see the LICENSE file for details.

About

No description, website, or topics provided.

Resources

Stars

1 star

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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nbmorph

TestsPyPI version

A small, Numba-accelerated Python package for morphological operations on 3D labeled images.

nbmorph provides a set of common morphological operations optimized for performance using Numba. It is designed to work with 3D NumPy arrays representing labeled image data, where different integer labels correspond to different objects.

Features

  • Numba-accelerated and multithreaded: Operations are just-in-time compiled with Numba for high performance on CPUs.

  • 3D Label Image Support: All operations are designed for 3D labeled images (integer NumPy arrays).

  • Quasi-Spherical Structuring Elements: Approximates spherical structuring elements by alternating between box and diamond kernels for dilation and erosion.

  • Core Morphological Operations:

    • dilate_labels_spherical: Expands the boundaries of labeled regions by assigning the mode of the neighborhood to background voxels.

    • erode_labels_spherical: Shrinks the boundaries of labeled regions.

    • open_labels_spherical: Removes small noise and thin protrusions (erosion followed by dilation).

    • close_labels_spherical: Fills small holes within objects (dilation followed by erosion).

    • smooth_labels_spherical: Smoothes object boundaries by performing an opening followed by a closing.

  • Mode (majority) filters: Stencil-based mode filters built on top of compile-time sorting networks for fast, fixed-size neighborhoods. Each comes in two variants:

    • onlyzero_mode_box / onlyzero_mode_diamond: Fill only background (zero) voxels with the mode of their 3x3x3 box or 6-connected diamond neighborhood, leaving labeled voxels unchanged.

    • mode_box / mode_diamond: Replace every voxel with the mode of its neighborhood (including the center), useful for denoising labeled volumes.

Effect of Morphological SmoothingDemonstration of the smoothing effect with varying radii and iterations on a sample image. The smoothing is followed by a dilation operation to fill up the empty space.

Installation

You can install nbmorph directly from pypi using pip:

pip install nbmorph

Usage

Here is a basic example of how to use nbmorph to apply operations to a 3D labeled image.

import numpy as np
import nbmorph
import numba
numba.set_num_threads(4)
# Create a sample 3D labeled image
# For example, a 5x5x5 cube of two different labels in a 10x10x10 volume
labels = np.zeros((10, 10, 10), dtype=np.uint16)
labels[2:7, 2:7, 2:5] = 1
labels[2:7, 2:7, 5:7] = 2
# First execution may take a while due to numba compilation
# Apply morphological erosion with a radius of 1
eroded_labels = nbmorph.erode_labels_spherical(labels, radius=1)
# Apply morphological dilation with a radius of 1
dilated_labels = nbmorph.dilate_labels_spherical(labels, radius=1)
# Apply morphological opening with a radius of 1
opened_labels = nbmorph.open_labels_spherical(labels, radius=1)
# Apply morphological closing with a radius of 1
closed_labels = nbmorph.close_labels_spherical(labels, radius=1)
# Apply morphological smoothing with a radius of 1
smoothed_labels = nbmorph.smooth_labels_spherical(labels, radius=1)

Testing

Tests are written using pytest. To run the tests, first install the test dependencies and then run pytest:

pip install .[test]
pytest

Benchmarking

A benchmark script is included in the scripts directory:

python scripts/benchmark.py

License

This project is licensed under the MIT License - see the LICENSE file for details.

About

No description, website, or topics provided.

Resources

Stars

1 star

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
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nbmorph

TestsPyPI version

A small, Numba-accelerated Python package for morphological operations on 3D labeled images.

nbmorph provides a set of common morphological operations optimized for performance using Numba. It is designed to work with 3D NumPy arrays representing labeled image data, where different integer labels correspond to different objects.

Features

  • Numba-accelerated and multithreaded: Operations are just-in-time compiled with Numba for high performance on CPUs.

  • 3D Label Image Support: All operations are designed for 3D labeled images (integer NumPy arrays).

  • Quasi-Spherical Structuring Elements: Approximates spherical structuring elements by alternating between box and diamond kernels for dilation and erosion.

  • Core Morphological Operations:

    • dilate_labels_spherical: Expands the boundaries of labeled regions by assigning the mode of the neighborhood to background voxels.

    • erode_labels_spherical: Shrinks the boundaries of labeled regions.

    • open_labels_spherical: Removes small noise and thin protrusions (erosion followed by dilation).

    • close_labels_spherical: Fills small holes within objects (dilation followed by erosion).

    • smooth_labels_spherical: Smoothes object boundaries by performing an opening followed by a closing.

  • Mode (majority) filters: Stencil-based mode filters built on top of compile-time sorting networks for fast, fixed-size neighborhoods. Each comes in two variants:

    • onlyzero_mode_box / onlyzero_mode_diamond: Fill only background (zero) voxels with the mode of their 3x3x3 box or 6-connected diamond neighborhood, leaving labeled voxels unchanged.

    • mode_box / mode_diamond: Replace every voxel with the mode of its neighborhood (including the center), useful for denoising labeled volumes.

Effect of Morphological SmoothingDemonstration of the smoothing effect with varying radii and iterations on a sample image. The smoothing is followed by a dilation operation to fill up the empty space.

Installation

You can install nbmorph directly from pypi using pip:

pip install nbmorph

Usage

Here is a basic example of how to use nbmorph to apply operations to a 3D labeled image.

import numpy as np
import nbmorph
import numba
numba.set_num_threads(4)
# Create a sample 3D labeled image
# For example, a 5x5x5 cube of two different labels in a 10x10x10 volume
labels = np.zeros((10, 10, 10), dtype=np.uint16)
labels[2:7, 2:7, 2:5] = 1
labels[2:7, 2:7, 5:7] = 2
# First execution may take a while due to numba compilation
# Apply morphological erosion with a radius of 1
eroded_labels = nbmorph.erode_labels_spherical(labels, radius=1)
# Apply morphological dilation with a radius of 1
dilated_labels = nbmorph.dilate_labels_spherical(labels, radius=1)
# Apply morphological opening with a radius of 1
opened_labels = nbmorph.open_labels_spherical(labels, radius=1)
# Apply morphological closing with a radius of 1
closed_labels = nbmorph.close_labels_spherical(labels, radius=1)
# Apply morphological smoothing with a radius of 1
smoothed_labels = nbmorph.smooth_labels_spherical(labels, radius=1)

Testing

Tests are written using pytest. To run the tests, first install the test dependencies and then run pytest:

pip install .[test]
pytest

Benchmarking

A benchmark script is included in the scripts directory:

python scripts/benchmark.py

License

This project is licensed under the MIT License - see the LICENSE file for details.

About

No description, website, or topics provided.

Resources

Stars

1 star

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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nbmorph

TestsPyPI version

A small, Numba-accelerated Python package for morphological operations on 3D labeled images.

nbmorph provides a set of common morphological operations optimized for performance using Numba. It is designed to work with 3D NumPy arrays representing labeled image data, where different integer labels correspond to different objects.

Features

  • Numba-accelerated and multithreaded: Operations are just-in-time compiled with Numba for high performance on CPUs.

  • 3D Label Image Support: All operations are designed for 3D labeled images (integer NumPy arrays).

  • Quasi-Spherical Structuring Elements: Approximates spherical structuring elements by alternating between box and diamond kernels for dilation and erosion.

  • Core Morphological Operations:

    • dilate_labels_spherical: Expands the boundaries of labeled regions by assigning the mode of the neighborhood to background voxels.

    • erode_labels_spherical: Shrinks the boundaries of labeled regions.

    • open_labels_spherical: Removes small noise and thin protrusions (erosion followed by dilation).

    • close_labels_spherical: Fills small holes within objects (dilation followed by erosion).

    • smooth_labels_spherical: Smoothes object boundaries by performing an opening followed by a closing.

  • Mode (majority) filters: Stencil-based mode filters built on top of compile-time sorting networks for fast, fixed-size neighborhoods. Each comes in two variants:

    • onlyzero_mode_box / onlyzero_mode_diamond: Fill only background (zero) voxels with the mode of their 3x3x3 box or 6-connected diamond neighborhood, leaving labeled voxels unchanged.

    • mode_box / mode_diamond: Replace every voxel with the mode of its neighborhood (including the center), useful for denoising labeled volumes.

Effect of Morphological SmoothingDemonstration of the smoothing effect with varying radii and iterations on a sample image. The smoothing is followed by a dilation operation to fill up the empty space.

Installation

You can install nbmorph directly from pypi using pip:

pip install nbmorph

Usage

Here is a basic example of how to use nbmorph to apply operations to a 3D labeled image.

import numpy as np
import nbmorph
import numba
numba.set_num_threads(4)
# Create a sample 3D labeled image
# For example, a 5x5x5 cube of two different labels in a 10x10x10 volume
labels = np.zeros((10, 10, 10), dtype=np.uint16)
labels[2:7, 2:7, 2:5] = 1
labels[2:7, 2:7, 5:7] = 2
# First execution may take a while due to numba compilation
# Apply morphological erosion with a radius of 1
eroded_labels = nbmorph.erode_labels_spherical(labels, radius=1)
# Apply morphological dilation with a radius of 1
dilated_labels = nbmorph.dilate_labels_spherical(labels, radius=1)
# Apply morphological opening with a radius of 1
opened_labels = nbmorph.open_labels_spherical(labels, radius=1)
# Apply morphological closing with a radius of 1
closed_labels = nbmorph.close_labels_spherical(labels, radius=1)
# Apply morphological smoothing with a radius of 1
smoothed_labels = nbmorph.smooth_labels_spherical(labels, radius=1)

Testing

Tests are written using pytest. To run the tests, first install the test dependencies and then run pytest:

pip install .[test]
pytest

Benchmarking

A benchmark script is included in the scripts directory:

python scripts/benchmark.py

License

This project is licensed under the MIT License - see the LICENSE file for details.

About

No description, website, or topics provided.

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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nbmorph

TestsPyPI version

A small, Numba-accelerated Python package for morphological operations on 3D labeled images.

nbmorph provides a set of common morphological operations optimized for performance using Numba. It is designed to work with 3D NumPy arrays representing labeled image data, where different integer labels correspond to different objects.

Features

  • Numba-accelerated and multithreaded: Operations are just-in-time compiled with Numba for high performance on CPUs.

  • 3D Label Image Support: All operations are designed for 3D labeled images (integer NumPy arrays).

  • Quasi-Spherical Structuring Elements: Approximates spherical structuring elements by alternating between box and diamond kernels for dilation and erosion.

  • Core Morphological Operations:

    • dilate_labels_spherical: Expands the boundaries of labeled regions by assigning the mode of the neighborhood to background voxels.

    • erode_labels_spherical: Shrinks the boundaries of labeled regions.

    • open_labels_spherical: Removes small noise and thin protrusions (erosion followed by dilation).

    • close_labels_spherical: Fills small holes within objects (dilation followed by erosion).

    • smooth_labels_spherical: Smoothes object boundaries by performing an opening followed by a closing.

  • Mode (majority) filters: Stencil-based mode filters built on top of compile-time sorting networks for fast, fixed-size neighborhoods. Each comes in two variants:

    • onlyzero_mode_box / onlyzero_mode_diamond: Fill only background (zero) voxels with the mode of their 3x3x3 box or 6-connected diamond neighborhood, leaving labeled voxels unchanged.

    • mode_box / mode_diamond: Replace every voxel with the mode of its neighborhood (including the center), useful for denoising labeled volumes.

Effect of Morphological SmoothingDemonstration of the smoothing effect with varying radii and iterations on a sample image. The smoothing is followed by a dilation operation to fill up the empty space.

Installation

You can install nbmorph directly from pypi using pip:

pip install nbmorph

Usage

Here is a basic example of how to use nbmorph to apply operations to a 3D labeled image.

import numpy as np
import nbmorph
import numba
numba.set_num_threads(4)
# Create a sample 3D labeled image
# For example, a 5x5x5 cube of two different labels in a 10x10x10 volume
labels = np.zeros((10, 10, 10), dtype=np.uint16)
labels[2:7, 2:7, 2:5] = 1
labels[2:7, 2:7, 5:7] = 2
# First execution may take a while due to numba compilation
# Apply morphological erosion with a radius of 1
eroded_labels = nbmorph.erode_labels_spherical(labels, radius=1)
# Apply morphological dilation with a radius of 1
dilated_labels = nbmorph.dilate_labels_spherical(labels, radius=1)
# Apply morphological opening with a radius of 1
opened_labels = nbmorph.open_labels_spherical(labels, radius=1)
# Apply morphological closing with a radius of 1
closed_labels = nbmorph.close_labels_spherical(labels, radius=1)
# Apply morphological smoothing with a radius of 1
smoothed_labels = nbmorph.smooth_labels_spherical(labels, radius=1)

Testing

Tests are written using pytest. To run the tests, first install the test dependencies and then run pytest:

pip install .[test]
pytest

Benchmarking

A benchmark script is included in the scripts directory:

python scripts/benchmark.py

License

This project is licensed under the MIT License - see the LICENSE file for details.

About

No description, website, or topics provided.

Resources

Stars

1 star

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0 watching

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Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
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nbmorph

TestsPyPI version

A small, Numba-accelerated Python package for morphological operations on 3D labeled images.

nbmorph provides a set of common morphological operations optimized for performance using Numba. It is designed to work with 3D NumPy arrays representing labeled image data, where different integer labels correspond to different objects.

Features

  • Numba-accelerated and multithreaded: Operations are just-in-time compiled with Numba for high performance on CPUs.

  • 3D Label Image Support: All operations are designed for 3D labeled images (integer NumPy arrays).

  • Quasi-Spherical Structuring Elements: Approximates spherical structuring elements by alternating between box and diamond kernels for dilation and erosion.

  • Core Morphological Operations:

    • dilate_labels_spherical: Expands the boundaries of labeled regions by assigning the mode of the neighborhood to background voxels.

    • erode_labels_spherical: Shrinks the boundaries of labeled regions.

    • open_labels_spherical: Removes small noise and thin protrusions (erosion followed by dilation).

    • close_labels_spherical: Fills small holes within objects (dilation followed by erosion).

    • smooth_labels_spherical: Smoothes object boundaries by performing an opening followed by a closing.

  • Mode (majority) filters: Stencil-based mode filters built on top of compile-time sorting networks for fast, fixed-size neighborhoods. Each comes in two variants:

    • onlyzero_mode_box / onlyzero_mode_diamond: Fill only background (zero) voxels with the mode of their 3x3x3 box or 6-connected diamond neighborhood, leaving labeled voxels unchanged.

    • mode_box / mode_diamond: Replace every voxel with the mode of its neighborhood (including the center), useful for denoising labeled volumes.

Effect of Morphological SmoothingDemonstration of the smoothing effect with varying radii and iterations on a sample image. The smoothing is followed by a dilation operation to fill up the empty space.

Installation

You can install nbmorph directly from pypi using pip:

pip install nbmorph

Usage

Here is a basic example of how to use nbmorph to apply operations to a 3D labeled image.

import numpy as np
import nbmorph
import numba
numba.set_num_threads(4)
# Create a sample 3D labeled image
# For example, a 5x5x5 cube of two different labels in a 10x10x10 volume
labels = np.zeros((10, 10, 10), dtype=np.uint16)
labels[2:7, 2:7, 2:5] = 1
labels[2:7, 2:7, 5:7] = 2
# First execution may take a while due to numba compilation
# Apply morphological erosion with a radius of 1
eroded_labels = nbmorph.erode_labels_spherical(labels, radius=1)
# Apply morphological dilation with a radius of 1
dilated_labels = nbmorph.dilate_labels_spherical(labels, radius=1)
# Apply morphological opening with a radius of 1
opened_labels = nbmorph.open_labels_spherical(labels, radius=1)
# Apply morphological closing with a radius of 1
closed_labels = nbmorph.close_labels_spherical(labels, radius=1)
# Apply morphological smoothing with a radius of 1
smoothed_labels = nbmorph.smooth_labels_spherical(labels, radius=1)

Testing

Tests are written using pytest. To run the tests, first install the test dependencies and then run pytest:

pip install .[test]
pytest

Benchmarking

A benchmark script is included in the scripts directory:

python scripts/benchmark.py

License

This project is licensed under the MIT License - see the LICENSE file for details.

About

No description, website, or topics provided.

Resources

Stars

1 star

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages