.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "packages/scikit-image/auto_examples/plot_labels.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_packages_scikit-image_auto_examples_plot_labels.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_packages_scikit-image_auto_examples_plot_labels.py:


Labelling connected components of an image
===========================================

This example shows how to label connected components of a binary image, using
the dedicated skimage.measure.label function.

.. GENERATED FROM PYTHON SOURCE LINES 8-39



.. image-sg:: /packages/scikit-image/auto_examples/images/sphx_glr_plot_labels_001.png
   :alt: plot labels
   :srcset: /packages/scikit-image/auto_examples/images/sphx_glr_plot_labels_001.png
   :class: sphx-glr-single-img





.. code-block:: Python


    from skimage import measure
    from skimage import filters
    import matplotlib.pyplot as plt
    import numpy as np

    n = 12
    l = 256
    rng = np.random.default_rng(27446968)
    im = np.zeros((l, l))
    points = l * rng.random((2, n**2))
    im[(points[0]).astype(int), (points[1]).astype(int)] = 1
    im = filters.gaussian(im, sigma=l / (4.0 * n))
    blobs = im > 0.7 * im.mean()

    all_labels = measure.label(blobs)
    blobs_labels = measure.label(blobs, background=0)

    plt.figure(figsize=(9, 3.5))
    plt.subplot(131)
    plt.imshow(blobs, cmap="gray")
    plt.axis("off")
    plt.subplot(132)
    plt.imshow(all_labels, cmap="nipy_spectral")
    plt.axis("off")
    plt.subplot(133)
    plt.imshow(blobs_labels, cmap="nipy_spectral")
    plt.axis("off")

    plt.tight_layout()
    plt.show()


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 0.059 seconds)


.. _sphx_glr_download_packages_scikit-image_auto_examples_plot_labels.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: plot_labels.ipynb <plot_labels.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: plot_labels.py <plot_labels.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: plot_labels.zip <plot_labels.zip>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_