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Summary
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The ``preprocessor_gui.py`` provides a graphical user interface for common preprocessing operations such as filtering or the creation of masks for template matching. You can launch it via:

.. code-block:: bash

    preprocessor_gui.py

Users that aim to perform these operations programmatically can do so via :py:class:`Density <tme.density.Density>`, :py:class:`Preprocessor <tme.preprocessor.Preprocessor>`, and :py:meth:`create_mask <tme.matching_utils.create_mask>`.