Announcement: scikit-image 0.20.0

scikit-image is an image processing toolbox built on SciPy that includes algorithms for segmentation, geometric transformations, color space manipulation, analysis, filtering, morphology, feature detection, and more.

For more information, examples, and documentation, please visit our website: https://scikit-image.org

With this release, many of the functions in skimage.measure now support anisotropic images with different voxel spacings.

Many performance improvements were made, such as support for footprint decomposition in skimage.morphology

Four new gallery examples were added to the documentation, including the new interactive example "Track solidification of a metallic alloy".

This release completes the transition to a more flexible channel_axis parameter for indicating multi-channel images, and includes several other deprecations that make the API more consistent and expressive.

Finally, in preparation for the removal of distutils in the upcoming Python 3.12 release, we replaced our build system with meson and a static pyproject.toml specification.

This release supports Python 3.8--3.11.

New features and improvements

Support footprint decomposition to several footprint generating and consuming functions in skimage.morphology. By decomposing a footprint into several smaller ones, morphological operations can potentially be sped up. The decomposed footprint can be generated with the new decomposition parameter of the functions rectangle, diamond, disk, cube, octahedron, ball, and octagon in skimage.morphology. The footprint parameter of the functions binary_erosion, binary_dilation, binary_opening, binary_closing, erosion, dilation, opening, closing, white_tophat, and black_tophat in skimage.morphology now accepts a sequence of 2-element tuples (footprint_i, num_iter_i) where each entry, i, of the sequence contains a footprint and the number of times it should be iteratively applied. This is the form produced by the footprint decompositions mentioned above (#5482, #6151).
Support anisotropic images with different voxel spacings. Spacings can be defined with the new parameter spacing of the following functions in skimage.measure: regionprops, regionprops_table, moments, moments_central, moments_normalized, centroid, inertia_tensor, and inertia_tensor_eigvals. Voxel spacing is taken into account for the following existing properties in skimage.measure.regionprops: area, area_bbox, centroid, area_convex, extent, feret_diameter_max, area_filled, inertia_tensor, moments, moments_central, moments_hu, moments_normalized, perimeter, perimeter_crofton, solidity, moments_weighted_central, and moments_weighted_hu. The new properties num_pixels and coords_scaled are available as well. See the respective docstrings for more details (#6296).
Add isotropic binary morphological operators isotropic_closing, isotropic_dilation, isotropic_erosion, and isotropic_opening in skimage.morphology. These functions return the same results as their non-isotropic counterparts but perform faster for large circular structuring elements (#6492).
Add new colocalization metrics pearson_corr_coeff, manders_coloc_coeff, manders_overlap_coeff and intersection_coeff to skimage.measure (#6189).
Support the Modified Hausdorff Distance (MHD) metric in skimage.metrics.hausdorff_distance via the new parameter method. The MHD can be more robust against outliers than the directed Hausdorff Distance (HD) (#5581).
Add two datasets skimage.data.protein_transport and skimage.data.nickel_solidification (#6087).
Add new parameter use_gaussian_derivatives to skimage.feature.hessian_matrix which allows the computation of the Hessian matrix by convolving with Gaussian derivatives (#6149).
Add new parameters squared_butterworth and npad to skimage.filters.butterworth, which support traditional or squared filtering and edge padding, respectively (#6251).
Support construction of a skimage.io.ImageCollection from a load_pattern with an arbitrary sequence as long as a matching load_func is provided (#6276).
Add new parameter alpha to skimage.metrics.adapted_rand_error allowing control over the weight given to precision and recall (#6472).
Add new parameter binarize to skimage.measure.grid_points_in_poly to optionally return labels that tell whether a pixel is inside, outside, or on the border of the polygon (#6515).
Add new parameter include_borders to skimage.measure.convex_hull_image to optionally exclude vertices or edges from the final hull mask (#6515).
Add new parameter offsets to skimage.measure.regionprops that optionally allows specifying the coordinates of the origin and affects the properties coords_scaled and coords (#3706).
Add new parameter disambiguate to skimage.registration.phase_cross_correlation to optionally disambiguate periodic shifts (#6617).
Support n-dimensional images in skimage.filters.farid (Farid & Simoncelli filter) (#6257).
Support n-dimensional images in skimage.restoration.wiener (#6454).
Support three dimensions for the properties rotation and translation in skimage.transform.EuclideanTransform as well as for skimage.transform.SimilarityTransform.scale (#6367).
Allow footprints with non-adjacent pixels as neighbors in skimage.morphology.flood_fill (#6236).
Support array-likes consistently in AffineTransform, EssentialMatrixTransform, EuclideanTransform, FundamentalMatrixTransform, GeometricTransform, PiecewiseAffineTransform, PolynomialTransform, ProjectiveTransform, SimilarityTransform, estimate_transform, and matrix_transform in skimage.transform (#6270).

Performance

Improve performance (~2x speedup) of skimage.feature.canny by porting a part of its implementation to Cython (#6387).
Improve performance (~2x speedup) of skimage.feature.hessian_matrix_eigvals and 2D skimage.feature.structure_tensor_eigenvalues (#6441).
Improve performance of skimage.measure.moments_central by avoiding redundant computations (#6188).
Reduce import time of skimage.io by loading the matplotlib plugin only when required (#6550).
Incorporate RANSAC improvements from scikit-learn into skimage.measure.ransac which decrease the number of iterations (#6046).
Improve histogram matching performance on unsigned integer data with skimage.exposure.match_histograms. (#6209, #6354).
Reduce memory consumption of the ridge filters meijering, sato, frangi, and hessian in skimage.filters (#6509).
Reduce memory consumption of blob_dog, blob_log, and blob_doh in skimage.feature (#6597).
Use minimal required unsigned integer size internally in skimage.morphology.reconstruction which allows to operate the function with higher precision or on larger arrays. Previously, int32 was used. (#6342).
Use minimal required unsigned integer size in skimage.filters.rank_order which allows to operate the function with higher precision or on larger arrays. Previously, the returned labels and original_values were always of type uint32. (#6342).

Changes and new deprecations

Set Python 3.8 as the minimal supported version (#6679).
Rewrite skimage.filters.meijering, skimage.filters.sato, skimage.filters.frangi, and skimage.filters.hessian to match the published algorithms more closely. This change is backward incompatible and will lead to different output values compared to the previous implementation. The Hessian matrix calculation is now done more accurately. The filters will now be correctly set to zero whenever one of the Hessian eigenvalues has a sign which is incompatible with a ridge of the desired polarity. The gamma constant of the Frangi filter is now set adaptively based on the maximum Hessian norm (#6446).
Move functions in skimage.future.graph to skimage.graph. This affects cut_threshold, cut_normalized, merge_hierarchical, rag_mean_color, RAG, show_rag, and rag_boundary (#6674).
Return False in skimage.measure.LineModelND.estimate instead of raising an error if the model is under-determined (#6453).
Return False in skimage.measure.CircleModel.estimate instead of warning if the model is under-determined (#6453).
Rename skimage.filters.inverse to skimage.filters.inverse_filter. skimage.filters.inverse is deprecated and will be removed in the next release (#6418, #6701).
Update minimal supported dependencies to numpy>=1.20 (#6565).
Update minimal supported dependencies to scipy>=1.8 (#6564).
Update minimal supported dependencies to networkx>=2.8 (#6564).
Update minimal supported dependency to pillow>=9.0.1 (#6402).
Update minimal supported dependency to setuptools 67 (#6754).
Update optional, minimal supported dependency to matplotlib>=3.3 (#6383).
Warn for non-integer image inputs to skimage.feature.local_binary_pattern. Applying the function to floating-point images may give unexpected results when small numerical differences between adjacent pixels are present (#6272).
Warn if skimage.registration.phase_cross_correlation returns only the shift vector. Starting with the next release this function will always return a tuple of three (shift vector, error, phase difference). Use return_error="always" to silence this warning and switch to this new behavior (#6543).
Warn in skimage.metrics.structural_similarity, if data_range is not specified in case of floating point data (#6612).
Automatic detection of the color channel is deprecated in skimage.filters.gaussian and a warning is emitted if the parameter channel_axis is not set explicitly (#6583).

Completed deprecations

Remove skimage.viewer which was scheduled for removal in the postponed version 1.0 (#6160).
Remove deprecated parameter indices from skimage.feature.peak_local_max (#6161).
Remove skimage.feature.structure_tensor_eigvals (it was replaced by skimage.feature.structure_tensor_eigenvalues) and change the default parameter value in skimage.feature.structure_tensor to order="rc" (#6162).
Remove deprecated parameter array in favor of image from skimage.measure.find_contours (#6163).
Remove deprecated Qt IO plugin and the skivi console script (#6164).
Remove deprecated parameter value method='_lorensen' in skimage.measure.marching_cubes (#6230).
Remove deprecated parameter multichannel; use channel_axis instead. This affects skimage.draw.random_shapes, skimage.exposure.match_histograms, skimage.feature.multiscale_basic_features, skimage.feature.hog, skimage.feature.difference_of_gaussians, skimage.filters.unsharp_mask, and skimage.metrics.structural_similarity. In skimage.restoration, this affects cycle_spin, denoise_bilateral, denoise_tv_bregman, denoise_tv_chambolle, denoise_wavelet, estimate_sigma, inpaint_biharmonic, and denoise_nl_means. In skimage.segmentation, this affects felzenszwalb, random_walker, and slic. In skimage.transform, this affects rescale, warp_polar, pyramid_reduce, pyramid_expand, pyramid_gaussian, and pyramid_laplacian. In skimage.util, this affects montage and apply_parallel (#6583).
Remove deprecated parameter selem; use footprint instead. In skimage.filters, this affects median, autolevel_percentile, gradient_percentile, mean_percentile, subtract_mean_percentile, enhance_contrast_percentile, percentile, pop_percentile, sum_percentile, threshold_percentile, mean_bilateral, pop_bilateral, sum_bilateral, autolevel, equalize, gradient, maximum, mean, geometric_mean, subtract_mean, median, minimum, modal, enhance_contrast, pop, sum, threshold, noise_filter, entropy, otsu, windowed_histogram, and majority. In skimage.morphology, this affects flood_fill, flood, binary_erosion, binary_dilation, binary_opening, binary_closing, h_maxima, h_minima, local_maxima, local_minima, erosion, dilation, opening, closing, white_tophat, black_tophat, and reconstruction (#6583).
Remove deprecated parameter max_iter from skimage.filters.threshold_minimum, skimage.morphology.thin, and skimage.segmentation.chan_vese; use max_num_iter instead (#6583).
Remove deprecated parameter max_iterations from skimage.segmentation.active_contour; use max_num_iter instead (#6583).
Remove deprecated parameter input from skimage.measure.label; use label_image instead (#6583).
Remove deprecated parameter coordinates from skimage.measure.regionprops and skimage.segmentation.active_contour (#6583).
Remove deprecated parameter neighbourhood from skimage.measure.perimeter; use neighborhood instead (#6583).
Remove deprecated parameters height and width from skimage.morphology.rectangle; use ncols and nrows instead (#6583).
Remove deprecated parameter in_place from skimage.morphology.remove_small_objects, skimage.morphology.remove_small_holes, and skimage.segmentation.clear_border; use out instead (#6583).
Remove deprecated parameter iterations from skimage.restoration.richardson_lucy, skimage.segmentation.morphological_chan_vese, and skimage.segmentation.morphological_geodesic_active_contour; use num_iter instead (#6583).
Remove support for deprecated keys "min_iter" and "max_iter" in skimage.restoration.unsupervised_wiener's parameter user_params; use "min_num_iter" and "max_num_iter" instead (#6583).
Remove deprecated functions greycomatrix and greycoprops from skimage.feature (#6583).
Remove deprecated submodules skimage.morphology.grey and skimage.morphology.greyreconstruct; use skimage.morphology instead (#6583).
Remove deprecated submodule skimage.morphology.selem; use skimage.morphology.footprints instead (#6583).
Remove deprecated skimage.future.graph.ncut (it was replaced by skimage.graph.cut_normalized) (#6685).

Bug fixes

Fix round-off error in skimage.exposure.adjust_gamma (#6285).
Round and convert output coordinates of skimage.draw.rectangle to int even if the input coordinates use float. This fix ensures that the output can be used for indexing similar to other draw functions (#6501).
Avoid unexpected exclusion of peaks near the image border in skimage.feature.peak_local_max if the peak value is smaller 0 (#6502).
Avoid anti-aliasing in skimage.transform.resize by default when using nearest neighbor interpolation (order == 0) with an integer input data type (#6503).
Use mask during rescaling in skimage.segmentation.slic. Previously, the mask was ignored when rescaling the image to make choice of compactness insensitive to the image values. The new behavior makes it possible to mask values such as numpy.nan or numpy.infinity. Additionally, raise an error if the input image has two dimensions and a channel_axis is specified - indicating that the image is multi-channel (#6525).
Fix unexpected error when passing a tuple to the parameter exclude_border in skimage.feature.blog_dog and skimage.feature.blob_log (#6533).
Raise a specific error message in skimage.segmentation.random_walker if no seeds are provided as positive values in the parameter labels (#6562).
Raise a specific error message when accessing region properties from skimage.measure.regionprops when the required intensity_image is unavailable (#6584).
Avoid errors in skimage.feature.ORB.detect_and_extract by breaking early if the octave image is too small (#6590).
Fix skimage.restoration.inpaint_biharmonic for images with Fortran-ordered memory layout (#6263).
Fix automatic detection of the color channel in skimage.filters.gaussian (this behavior is deprecated, see new deprecations) (#6583).
Fix stacklevel of warning in skimage.color.lab2rgb (#6616).
Fix the order of return values for skimage.feature.hessian_matrix and raise an error if order='xy' is requested for images with more than 2 dimensions (#6624).
Fix misleading exception in functions in skimage.filters.rank that did not mention that 2D images are also supported (#6666).
Fix in-place merging of wheights in skimage.graph.RAG.merge_nodes (#6692).
Fix growing memory error and silence compiler warning in internal heappush function (#6727).
Fix compiliation warning about struct initialization in Cascade.detect_multi_scale (#6728).

Documentation

New

Add gallery example "Decompose flat footprints (structuring elements)" (#6151).
Add gallery example "Butterworth Filters" and improve docstring of skimage.filters.butterworth (#6251).
Add gallery example "Render text onto an image" (#6431).
Add gallery example "Track solidification of a metallic alloy" (#6469).
Add gallery example "Colocalization metrics" (#6189).
Add support page (.github/SUPPORT.md) to help users from GitHub find appropriate support resources (#6171, #6575).
Add CITATION.bib to repository to help with citing scikit-image (#6195).
Add usage instructions for new Meson-based build system with dev.py (#6600).

Improved & updated

Improve gallery example "Measure perimeters with different estimators" (#6200, #6121).
Adapt gallery example "Build image pyramids" to more diversified shaped images and downsample factors (#6293).
Adapt gallery example "Explore 3D images (of cells)" with interactive slice explorer using plotly (#4953).
Clarify meaning of the weights term and rewrite docstrings of skimage.restoration.denoise_tv_bregman and skimage.restoration.denoise_tv_chambolle (#6544).
Describe the behavior of skimage.io.MultiImage more precisely in its docstring (#6290, #6292).
Clarify that the enabled watershed_line parameter will not catch borders between adjacent marker regions in skimage.segmentation.watershed (#6280).
Clarify that skimage.morphology.skeletonize accepts an image of any input type (#6322).
Use gridded thumbnails in our gallery to demonstrate the different images and datasets available in skimage.data (#6298, #6300, #6301).
Tweak balance in the docstring example of skimage.restoration.wiener for a less blurry result (#6265).
Document support for Path objects in skimage.io.imread and skimage.io.imsave (#6361).
Improve error message in skimage.filters.threshold_multiotsu if the discretized image cannot be thresholded (#6375).
Show original unlabeled image as well in the gallery example "Expand segmentation labels without overlap" (#6396).
Document refactoring of grey* to skimage.feature.graymatrix and skimage.feature.graycoprops in the release 0.19 (#6420).
Document inclusion criteria for new functionality in core developer guide (#6488).
Print the number of segments after applying the Watershed in the gallery example "Comparison of segmentation and superpixel algorithms" (#6535).
Replace issue templates with issue forms (#6554, #6576).
Expand reviewer guidelines in pull request template (#6208).
Provide pre-commit PR instructions in pull request template (#6578).
Warn about and explain the handling of floating-point data in the docstring of skimage.metricts.structural_similarity (#6595).
Fix intensity autoscaling in animated imshow in gallery example "Measure fluorescence intensity at the nuclear envelope" (#6599).
Clarify dependency on scikit-image[data] and pooch in INSTALL.rst (#6619).
Don't use confusing loop in installation instructions for conda (#6672).
Document value ranges of L*a*b* and L*Ch in lab2xyz, rgb2lab, lab2lch, and lch2lab in skimage.color (#6688, #6697, #6719).
Use more consistent style in docstring of skimage.feature.local_binary_pattern (#6736).

Fixes, spelling & minor tweaks

Remove deprecated reference and use skimage.measure.marching_cubes in gallery example "Marching Cubes" (#6377).
List only the two primary OS-independent methods of installing scikit-image (#6557, #6560).
Fix description of connectivity parameter in the docstring of skimage.morphology.flood (#6534).
Fix formatting in the docstring of skimage.metrics.hausdorff_distance (#6203).
Fix typo in docstring of skimage.measure.moments_hu (#6016).
Fix formatting of mode parameter in skimage.util.random_noise (#6532).
Fix broken links in SKIP 3 (#6445).
Fix broken link in docstring of skimage.filters.sobel (#6474).
Change "neighbour" to EN-US spelling "neighbor" (#6204).
Add missing copyrights to LICENSE.txt and use formatting according to SPDX identifiers (#6419).
Include skimage.morphology.footprint_from_sequence in the public API documentation (#6555).
Correct note about return type in the docstring of skimage.exposure.rescale_intensity (#6582).
Stop using the git:// connection protocol and remove references to it (#6201, #6283).
Update scikit-image's mailing addresses to the new domain discuss.scientific-python.org (#6255).
Remove references to deprecated mailing list in doc/source/user_guide/getting_help.rst (#6575).
Use "center" in favor of "centre", and "color" in favor of "colour" gallery examples (#6421, #6422).
Replace reference to api_changes.rst with release_dev.rst (#6495).
Clarify header pointing to notes for latest version released (#6508).
Add missing spaces to error message in skimage.measure.regionprops (#6545).
Apply codespell to fix common spelling mistakes (#6537).
Add missing space in math directive in normalized_mutual_information's docstring (#6549).
Fix lengths of docstring heading underline in skimage.morphology.isotropic_ functions (#6628).
Fix plot order due to duplicate examples with the file name plot_thresholding.py (#6644).
Get rid of numpy deprecation warning in gallery example plot_equalize (#6650).
Fix swapping of opening and closing in gallery example plot_rank_filters (#6652).
Get rid of numpy deprecation warning in gallery example in plot_log_gamma.py (#6655).
Remove warnings and unnecessary messages in gallery example "Tinting gray-scale images" (#6656).
Update the contribution guide to recommend creating the virtualenv outside the source tree (#6675).
Fix typo in docstring of skimage.data.coffee (#6740).
Add missing backtick in docstring of skimage.graph.merge_nodes (#6741).
Fix typo in skimage.metrics.variation_of_information (#6768).

Other and development related updates

Governance & planning

Add draft of SKIP 4 "Transitioning to scikit-image 2.0" (#6339, #6353).

Maintenance

Prepare release notes for v0.20.0 (#6556, #6766).
Add and test alternative build system based on Meson as an alternative to the deprecated distutils system (#6536).
Use cnp.float32_t and cnp.float64_t over float and double in Cython code (#6303).
Move skimage/measure/mc_meta folder into tools/precompute/ folder to avoid its unnecessary distribution to users (#6294).
Remove unused function getLutNames in tools/precompute/mc_meta/createluts.py (#6294).
Point urls for data files to a specific commit (#6297).
Drop Codecov badge from project README (#6302).
Remove undefined reference to 'python_to_notebook' in doc/ext/notebook_doc.py (#6307).
Parameterize tests in skimage.measure.tests.test_moments (#6323).
Avoid unnecessary copying in skimage.morphology.skeletonize and update code style and tests (#6327).
Fix typo in _probabilistic_hough_line (#6373).
Derive OBJECT_COLUMNS from COL_DTYPES in skimage.measure._regionprops (#6389).
Support loadtxt of NumPy 1.23 with skimage/feature/orb_descriptor_positions.txt (#6400).
Exclude pillow 9.1.1 from supported requirements (#6384).
Use the same numpy version dependencies for building as used by default (#6409).
Forward-port v0.19.1 and v0.19.2 release notes (#6253).
Forward-port v0.19.3 release notes (#6416).
Exclude submodules of doc.* from package install (#6428).
Substitute deprecated vertices with simplices in skimage.transform._geometric (#6430).
Fix minor typo in skimage.filters.sato (#6434).
Simplify sort-by-absolute-value in ridge filters (#6440).
Removed completed items in TODO.txt (#6442).
Remove duplicate import in skimage.feature._canny (#6457).
Use with open(...) as f instead of f = open(...) (#6458).
Use context manager when possible (#6484).
Use broadcast_to instead of as_strided to generate broadcasted arrays (#6476).
Use moving_image in docstring of skimage.registration._optical_flow._tvl1 (#6480).
Use pyplot.get_cmap instead of deprecated cm.get_cmap in skimage.future.graph.show_rag for compatibility with matplotlib 3.3 to 3.6 (#6483, #6490).
Update plot_euler_number.py for maplotlib 3.6 compatibility (#6522).
Make non-functional change to build.txt to fix cache issue on CircleCI (#6528).
Update deprecated field license_file to license_files in setup.cfg (#6529).
Ignore codespell fixes with git blame (#6539).
Remove FUNDING.yml in preference of org version (#6553).
Handle pending changes to tifffile.imwrite defaults and avoid test warnings (#6460).
Handle deprecation by updating to networkx.to_scipy_sparse_array (#6564).
Update minimum supported numpy, scipy, and networkx (#6385).
Apply linting results after enabling pre-commit in CI (#6568).
Refactor lazy loading to use stubs & lazy_loader package (#6577).
Update sphinx configuration (#6579).
Update pyproject.toml to support Python 3.11 and to fix 32-bit pinned packages on Windows (#6519).
Update primary email address in mailmap entry for grlee77 (#6639).
Handle new warnings introduced in NumPy 1.24 (#6637).
Remove unnecessary dependency on ninja in pyproject.toml (#6634).
Pin to latest meson-python >=0.11.0 (#6627).
Increase warning stacklevel by 1 in skimage.color.lab2xyz (#6613).
Update OpenBLAS to v0.3.17 (#6607, #6610).
Fix Meson build on windows in sync with SciPy (#6609).
Set check: true for run_command in skimage/meson.build (#6606).
Add dev.py and setup commands (#6600).
Organize dev.py commands into sections (#6629).
Remove thumbnail_size in config since sphinx-gallery>=0.9.0 (#6647).
Add new test cases for skimage.transform.resize (#6669).
Use meson-python main branch (#6671).
Simplify QhullError import (#6677).
Remove old SciPy cruft (#6678, #6681).
Remove old references to imread package (#6680).
Remove pillow cruft (and a few other cleanups) (#6683).
Remove leftover gtk_plugin.ini (#6686).
Prepare v0.20.0rc0 (#6706).
Remove pre-release suffix for for Python 3.11 (#6709).
Loosen tests for SciPy 1.10 (#6715).
Specify C flag only if supported by compiler (#6716).
Extract version info from skimage/__init__.py in skimage/meson.build (#6723).
Fix Cython errors/warnings (#6725).
Generate pyproject deps from requirements (#6726).
MAINT: Use uintptr_t to calculate new heap ptr positions (#6734).
Bite the bullet: remove distutils and setup.py (#6738).
Use meson-python developer version (#6753).
Require setuptools 65.6+ (#6751).
Remove setup.cfg, use pyproject.toml instead (#6758).
Update pyproject.toml to use meson-python>=0.13.0rc0 (#6759).

Benchmarks

Add benchmarks for morphology.local_maxima (#3255).
Add benchmarks for skimage.morphology.reconstruction (#6342).
Update benchmark environment to Python 3.10 and NumPy 1.23 (#6511).

CI & automation

Add Github actions/stale to label "dormant" issues and PRs (#6506, #6546, #6552).
Fix the autogeneration of API docs for lazy loaded subpackages (#6075).
Checkout gh-pages with a shallow clone (#6085).
Fix dev doc build (#6091).
Fix CI by excluding Pillow 9.1.0 (#6315).
Pin pip pip to <22.1 in tools/github/before_install.sh (#6379).
Update GH actions from v2 to v3 (#6382).
Update to supported CircleCI images (#6401).
Use artifact-redirector (#6407).
Forward-port gh-6369: Fix windows wheels: use vsdevcmd.bat to make sure rc.exe is on the path (#6417).
Restrict GitHub Actions permissions to required ones (#6426, #6504).
Update to Ubuntu LTS version on Actions workflows (#6478).
Relax label name comparison in benchmarks.yaml workflow (#6520).
Add linting via pre-commit (#6563).
Add CI tests for Python 3.11 (#6566).
Fix CI for Scipy 1.9.2 (#6567).
Test optional Py 3.10 dependencies on MacOS (#6580).
Pin setuptools in GHA MacOS workflow and azure-pipelines.yml (#6626).
Build Python 3.11 wheels (#6581).
Fix doc build on CircleCI and add ccache (#6646).
Build wheels on CI via branch rather than tag (#6668).
Do not build wheels on pushes to main (#6673).
Use tools/github/before_install.sh wheels workflow (#6718).
Use Ruff for linting (#6729).
Use test that can fail for sdist (#6731).
Fix fstring in skimage._shared._warnings.expected_warnings (#6733).
Build macosx/py38 wheel natively (#6743).
Remove CircleCI URL check (#6749).
CI Set MACOSX_DEPLOYMENT_TARGET=10.9 for Wheels (#6750).
Add temporary workaround until new meson-python release (#6757).
Update action to use new environment file (#6762).
Autogenerate pyproject.toml (#6763).

71 authors contributed to this release [alphabetical by first name or login]

Adeel Hassan
Albert Y. Shih
AleixBP (AleixBP)
Alex (sashashura)
Alexandr Kalinin
Alexandre de Siqueira
Amin (MOAMSA)
Antony Lee
Balint Varga
Ben Greiner
bsmietanka (bsmietanka)
Chris Roat
Chris Wood
Daria
Dave Mellert
Dudu Lasry
Elena Pascal
Eli Schwartz
Fabian Schneider
forgeRW (forgeRW)
Frank A. Krueger
Gregory Lee
Gus Becker
Hande Gözükan
Jacob Rosenthal
James Gao
Jan Kadlec
Jan-Hendrik Müller
Jan-Lukas Wynen
Jarrod Millman
Jeremy Muhlich
johnthagen (johnthagen)
Joshua Newton
Juan DF
Juan Nunez-Iglesias
Judd Storrs
Larry Bradley
Lars Grüter
lihaitao (li1127217ye)
Lucas Johnson
Malinda (maldil)
Marianne Corvellec
Mark Harfouche
Martijn Courteaux
Marvin Albert
Matthew Brett
Matthias Bussonnier
Miles Lucas
Nathan Chan
Naveen
OBgoneSouth (OBgoneSouth)
Oren Amsalem
Preston Buscay
Peter Sobolewski
Peter Bell
Ray Bell
Riadh Fezzani
Robin Thibaut
Ross Barnowski
samtygier (samtygier)
Sandeep N Menon
Sanghyeok Hyun
Sebastian Berg
Sebastian Wallkötter
Simon-Martin Schröder
Stefan van der Walt
Teemu Kumpumäki
Thanushi Peiris
Thomas Voigtmann
Tim-Oliver Buchholz
Tyler Reddy

42 reviewers contributed to this release [alphabetical by first name or login]

Abhijeet Parida
Albert Y. Shih
Alex (sashashura)
Alexandre de Siqueira
Antony Lee
Ben Greiner
Carlo Dri
Chris Roat
Daniele Nicolodi
Daria
Dudu Lasry
Eli Schwartz
François Boulogne
Gregory Lee
Gus Becker
Jacob Rosenthal
James Gao
Jan-Hendrik Müller
Jarrod Millman
Juan DF
Juan Nunez-Iglesias
Lars Grüter
Malinda (maldil)
Marianne Corvellec
Mark Harfouche
Martijn Courteaux
Marvin Albert
Matthias Bussonnier
Oren Amsalem
Ralf Gommers
Riadh Fezzani
Robert Haase
Robin Thibaut
Sandeep N Menon
Sanghyeok Hyun
Sebastian Berg
Sebastian Wallkötter
Simon-Martin Schröder
Stefan van der Walt
Thanushi Peiris
Thomas Voigtmann

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