Skip to content

Upgrading scikit-image 0.21 to 0.22

Breaking0.21.0 → 0.22.0Breaking6Platform3Deprecated1New1Changed14Fixed9Other66

Full comparisonBack to scikit-image
BreakingUpgrade verdict

6 breaking changes and 3 platform requirement changes.

In plain terms
  • The old inverse filter function is gone; switch to the renamed function.
  • The old Hessian eigenvalue helper is removed; compute the Hessian matrix and its eigenvalues with the feature module functions instead.
  • Gaussian filtering no longer guesses whether an image is color; set channel_axis=-1 explicitly for color images.
  • Removes future.graph after the v0.21 release.
Must act Top 5 of 10 that need code or config changes

Python requirement changed in 0.22.0rc1: >=3.8 → >=3.9.

Drops pywavelets.

Installs 8 packages in all (was 9).

What you must change

Breaking6
Removes deprecated skimage.filters.inverse; use skimage.filters.filter_inverse instead.
skimage.filters.inverseskimage.filters.filter_inverse
0.22.0rc1GitHub ReleaseSummarizedView source
Removes deprecated skimage.filters.ridges.compute_hessian_eigenvalues; use hessian_matrix_eigvals on hessian_matrix results.
skimage.filters.ridges.compute_hessian_eigenvaluesskimage.feature.hessian_matrix_eigvalsskimage.feature.hessian_matrix
0.22.0rc1GitHub ReleaseSummarizedView source
Removes deprecated automatic color channel detection in skimage.filters.gaussian; channel_axis=None now means grayscale.
skimage.filters.gaussianchannel_axis
0.22.0rc1GitHub ReleaseSummarizedView source
Removes future.graph after the v0.21 release.
future.graph
0.22.0rc1GitHub ReleaseSummarizedView source
Makes PyWavelets an optional dependency required only for denoise_wavelet and estimate_sigma.
skimage.restoration.denoise_waveletskimage.restoration.estimate_sigma
0.22.0rc1GitHub ReleaseSummarizedView source
Changes number of returned arguments in skimage.registration.phase_cross_correlation to always return shift, error, and phasediff.
skimage.registration.phase_cross_correlationshifterrorphasediff
0.22.0rc1GitHub ReleaseSummarizedView source
Platform3
Drops Python 3.8 support per SPEC 0.
0.22.0rc1GitHub ReleaseSummarizedView source
Requires sklearn 1.1, as per SPEC0.
sklearn
0.22.0rc1GitHub ReleaseSummarizedView source
Announces Python 3.12 support.
0.22.0rc1GitHub ReleaseSummarizedView source

Deprecations to plan for

Deprecated1
Deprecates return_error in skimage.registration.phase_cross_correlation.
skimage.registration.phase_cross_correlationreturn_error
0.22.0rc1GitHub ReleaseSummarizedView source

API changes

Generated by DepDelta from published Python source. Not mixed with prose notes.

  • added: function handle_np2()
  • removed: class DescriptorException(FisherVectorException)
  • removed: class FisherVectorException(Exception)
  • removed: function fisher_vector(descriptors, gmm, *, improved=…, alpha=…)
  • removed: function learn_gmm(descriptors, *, n_modes=…, gm_args=…)
  • removed: export compute_hessian_eigenvalues
  • removed: export inverse
  • removed: function inverse(data, impulse_response=…, filter_params=…, max_gain=…, predefined_filter=…)
  • removed: function compute_hessian_eigenvalues(image, sigma, sorting=…, mode=…, cval=…, use_gaussian_derivatives=…)
  • removed: function ball_kernel(radius, ndim)
  • removed: function ellipsoid_kernel(shape, intensity)
  • removed: function rolling_ball(image, *, radius=…, kernel=…, nansafe=…, num_threads=…)