v23.08.00

🚨 Breaking Changes

• Sync cuCIM API with scikit-image 0.21 (#573) @grlee77

🐛 Bug Fixes

• Remove libwebp-base upper bound. (#599) @bdice
• Fix ignore_run_exports_from. (#596) @bdice
• Add ignore_run_exports for CUDA 11 (#593) @raydouglass
• Use linalg & inline _get_manders_overlap_coeff (#578) @jakirkham
• Fix canny and butterworth (recent CuPy and NumPy compatibility) (#574) @grlee77

🛠️ Improvements

• Postponed the assessment of GPU memory for testing (#601) @gigony
• Do not use x86_64 GDS binaries for aarch64 (#590) @gigony
• remove checks for versions of scikit-image that are no longer supported (#587) @grlee77
• Allow scikit-image 0.21.0 (#580) @jakirkham
• Drop unneeded selector on libwebp-base (#579) @jakirkham
• switch from bundled lazy loading code to the public lazy_loader package (#575) @grlee77
• Sync cuCIM API with scikit-image 0.21 (#573) @grlee77
• cuCIM: Build CUDA 12 packages (#572) @jakirkham
• use rapids-upload-docs script (#570) @AyodeAwe
• Remove documentation build scripts for Jenkins (#567) @ajschmidt8

v23.06.00

🚨 Breaking Changes

• Support Python 3.9 build/tests (#547) @shwina

🐛 Bug Fixes

• Fix SHA256 check failure in test suite (#564) @grlee77
• Handle space character in ./run download_testdata (#556) @gigony
• Fix return_error='always' behavior in phase_cross_correlation (#549) @grlee77
• Only load versioned libcufile (#548) @jakirkham
• add a 20 minute timeout for pytest runs on CI (#545) @grlee77
• protect against possible out of bounds memory access in 2D distance transform (#540) @grlee77

📖 Documentation

• Fix doc building via run build_package (#553) @grlee77
• update changelog for release 23.04.00 and 23.04.01 (#552) @grlee77

🛠️ Improvements

• Allow numpy 1.24. (#563) @bdice
• run docs nightly too (#560) @AyodeAwe
• Update cupy dependency (#558) @vyasr
• Remove libjpeg dependency (#557) @gigony
• Enable sccache hits from local builds (#551) @AyodeAwe
• Revert shared workflows branch (#550) @ajschmidt8
• Support Python 3.9 build/tests (#547) @shwina
• Remove usage of rapids-get-rapids-version-from-git (#546) @jjacobelli
• Use ARC V2 self-hosted runners for GPU jobs (#538) @jjacobelli
• Remove underscore in build string. (#528) @bdice

v23.04.01

🚨 Breaking Changes

• Fix inefficiency in handling clipping of image range in resize and other transforms (#516) @grlee77

🐛 Bug Fixes

• Fix bug in median filter with non-uniform footprint (#521) @grlee77
• use cp.around instead of cp.round for CuPy 10.x compatiblity (#508) @grlee77
• Fix error in LZ4-compressed Zarr writing demo (#506) @grlee77
• Normalize whitespace. (#474) @bdice

🛠️ Improvements

• Pin libwebp-base (#541) @ajschmidt8
• allow scikit-image 0.20 as well (#536) @grlee77
• Pass AWS_SESSION_TOKEN and SCCACHE_S3_USE_SSL vars to conda build (#525) @ajschmidt8
• Update aarch64 to GCC 11 (#524) @bdice
• Update to GCC 11 (#522) @bdice
• Upgrade dockcross and pybind11 (#519) @gigony
• Binary morphology: omit weights array when possible (#517) @grlee77
• Fix inefficiency in handling clipping of image range in resize and other transforms (#516) @grlee77
• Fix GHA build workflow (#515) @AjayThorve
• Reduce error handling verbosity in CI tests scripts (#511) @AjayThorve
• Update shared workflow branches (#510) @ajschmidt8
• Remove gpuCI scripts. (#505) @bdice
• Move date to build string in conda recipe (#497) @ajschmidt8

v23.04.00

🚨 Breaking Changes

• Fix inefficiency in handling clipping of image range in resize and other transforms (#516) @grlee77

🐛 Bug Fixes

• Fix bug in median filter with non-uniform footprint (#521) @grlee77
• use cp.around instead of cp.round for CuPy 10.x compatiblity (#508) @grlee77
• Fix error in LZ4-compressed Zarr writing demo (#506) @grlee77
• Normalize whitespace. (#474) @bdice

🛠️ Improvements

• allow scikit-image 0.20 as well (#536) @grlee77
• Pass AWS_SESSION_TOKEN and SCCACHE_S3_USE_SSL vars to conda build (#525) @ajschmidt8
• Update aarch64 to GCC 11 (#524) @bdice
• Update to GCC 11 (#522) @bdice
• Upgrade dockcross and pybind11 (#519) @gigony
• Binary morphology: omit weights array when possible (#517) @grlee77
• Fix inefficiency in handling clipping of image range in resize and other transforms (#516) @grlee77
• Fix GHA build workflow (#515) @AjayThorve
• Reduce error handling verbosity in CI tests scripts (#511) @AjayThorve
• Update shared workflow branches (#510) @ajschmidt8
• Remove gpuCI scripts. (#505) @bdice
• Move date to build string in conda recipe (#497) @ajschmidt8

v23.02.00

🚨 Breaking Changes

• Add disambiguation option to phase_cross_correlation (skimage 0.20 feature) (#486) @grlee77

🐛 Bug Fixes

• apply bug fix to vendored ndimage code (#494) @grlee77
• Closes #490 -- fixes bug in hue jitter (#491) @benlansdell
• Fix random seed used in test_3d_similarity_estimation (#472) @grlee77

📖 Documentation

• Fix documentation author (#475) @bdice

🚀 New Features

• Add colocalization measures (#488) @grlee77
• Add disambiguation option to phase_cross_correlation (skimage 0.20 feature) (#486) @grlee77

🛠️ Improvements

• Update shared workflow branches (#501) @ajschmidt8
• Update isort version to 5.12.0 (#492) @ajschmidt8
• Improve rank filtering performance by removing use of footprint kernel when possible (#485) @grlee77
• use vendored version of cupy.pad with added performance optimizations (#482) @grlee77
• add docs builds to Github Actions (#481) @AjayThorve
• Update numpy version specifier (#480) @ajschmidt8
• Build CUDA 11.8 and Python 3.10 Packages (#476) @ajschmidt8
• Add GitHub Actions Workflows. (#471) @bdice
• Fix conflicts in "Forward-merge branch-22.12 to branch-23.02" (#468) @jakirkham
• Enable copy_prs. (#465) @bdice

v22.12.00

🚨 Breaking Changes

• Implement additional deprecations carried out for scikit-image 0.20 (#451) @grlee77
• improved implementation of ridge filters (bug fixes and reduced memory footprint) (#423) @grlee77

🐛 Bug Fixes

• pin to cmake !3.25.0 on CI to avoid bug with CUDA+conda during build (#444) @grlee77
• update incorrect argument and deprecated function for tifffile.TiffWriter (#433) @JoohyungLee0106
• Fix rotate behavior for ndim > 2 (#432) @grlee77

📖 Documentation

• add whole-slide tiled read/write demos for measuring GPUDirect Storage (GDS) I/O performance (#452) @grlee77
• Add demo for distance_transform_edt (#394) @grlee77

🚀 New Features

• Support no-compression method in converter (#443) @gigony
• add three segmentation metrics (#425) @grlee77
• add isotropic binary morphology functions (#421) @grlee77
• Add blob feature detectors (blob_dog, blob_log, blob_doh) (#413) @monzelr

🛠️ Improvements

• additional minor updates (skimage 0.20) (#455) @grlee77
• Implement additional deprecations carried out for scikit-image 0.20 (#451) @grlee77
• Faster hessian_matrix_* and structure_tensor_eigvals via analytical eigenvalues for the 3D case (#434) @grlee77
• use fused kernels to reduce overhead in corner detector implementations (#426) @grlee77
• Misc updates for consistency with scikit-image 0.20 (#424) @grlee77
• improved implementation of ridge filters (bug fixes and reduced memory footprint) (#423) @grlee77
• analytical moments computations, support pixel spacings in moments and regionprops (#422) @grlee77
• Forward merge branch-22.10 to branch-22.12 (#420) @grlee77
• Support sampling kwarg for distance_transform_edt (take pixel/voxel sizes into account) (#407) @grlee77
• Improve performance of Euclidean distance transform (#406) @grlee77

v22.10.00

🐛 Bug Fixes

• Correctly use dtype when computing shared memory requirements of separable convolution (#409) @grlee77
• Forward-merge branch-22.08 to branch-22.10 (#403) @jakirkham
• Add missing imports of euler_number and perimeter_crofton (#386) @grlee77

📖 Documentation

• update pypi CHANGELOG.md for releases 22.08.00 and 22.08.01 (#404) @grlee77
• Update README.md (#396) @HesAnEasyCoder

🚀 New Features

• Allow cupy 11 (#399) @galipremsagar
• Add cucim.skimage.feature.match_descriptors (#338) @grlee77

🛠️ Improvements

• Merge docs and add links (#415) @jakirkham
• Add benchmarks for scikit-image functions introduced in 22.08 (#378) @grlee77

v22.08.01

This release fixes a bug in the 2D Euclidean distance transform for larger images.

🐛 Bug Fixes

• Euclidean distance transform: fix bad choice of block parameters (#393) @grlee77

v22.08.00

🚨 Breaking Changes

• Stain extraction: use a less strict condition across channels when thresholding (#316) @grlee77

🐛 Bug Fixes

• create SimilarityTransform using CuPy 9.x-compatible indexing (#365) @grlee77
• Add __init__.py in cucim.core (#359) @jakirkham
• Stain extraction: use a less strict condition across channels when thresholding (#316) @grlee77
• Incorporate bug fixes from skimage 0.19.3 (#312) @grlee77
• fix RawKernel bug for canny filter when quantiles are used (#310) @grlee77

📖 Documentation

• Defer loading of custom.js (#383) @galipremsagar
• add cucim.core.morphology to API docs + other docstring fixes (#367) @grlee77
• Update README.md (#361) @HesAnEasyCoder
• remove unimplemented functions from See Also and fix version numbers in deprecation warnings (#356) @grlee77
• Forward-merge branch-22.06 to branch-22.08 (#344) @grlee77
• Update README.md (#315) @HesAnEasyCoder
• Update index.rst (#314) @HesAnEasyCoder
• Update PyPI package documentation for v22.06.00 (#311) @gigony

🚀 New Features

• Add segmentation with the Chan-Vese active contours method (#343) @grlee77
• Add cucim.skimage.morphology.medial_axis (#342) @grlee77
• Add cucim.skimage.segmentation.expand_labels (#341) @grlee77
• Add Euclidean distance transform for images/volumes (#318) @grlee77

🛠️ Improvements

• Revert "Allow CuPy 11" (#362) @galipremsagar
• Fix issues with day & night modes in python docs (#360) @galipremsagar
• Allow CuPy 11 (#357) @jakirkham
• more efficient separable convolution (#355) @grlee77
• Support resolution and spacing metadata (#349) @gigony
• Performance optimizations to morphological segmentation functions (#340) @grlee77
• benchmarks: avoid use of deprecated pandas API (#339) @grlee77
• Reduce memory overhead and improve performance of normalize_colors_pca (#328) @grlee77
• Protect against obscure divide by zero error in edge case of normalize_colors_pca (#327) @grlee77
• complete parametrization of cucim.skimage benchmarks (#324) @grlee77
• parameterization of filters and features benchmarks (v2) (#322) @grlee77
• Add a fast histogram-based median filter (#317) @grlee77
• Remove custom compiler environment variables (#307) @ajschmidt8

v22.06.00

The 22.06.00 release adds a new function cucim.skimage.segmentation.clear_border that can be used to remove any labels touching the image/volume border. There are also new functions for stain extraction and normalization of digital pathology slides stained with hematoxyling and eosin: cucim.core.operations.color.stain_extraction_pca and cucim.core.operations.color.normalize_colors_pca.

Aside from this, there are also a number of performance improvements. Specifically, edge detection with cucim.skimage.feature.canny should be 3-4x faster than previously. Binary and grayscale morphological operations can now be performed much faster for large footprint sizes. To take advantage of this, set the decomposition kwarg of the footprint-generation functions to 'series', 'separable' or 'crosses', as available. This provides a sequence of small footprints (structuring elements) that can be passed to the footprint argument of any morphology function, enabling identical output in a much shorter run time. The specific functions in cucim.skimage.morphology that support this new feature are square, rectangle, diamond, disk, ellipse, octagon, cube, ball and octahedron.

One backward incompatible change was made to the dtype used when casting 8 and 16-bit signed and unsigned integer data types to floating point. Specifically when functions convert these types to floating point, 32-bit precision will now be used. Previously these were promoted to 64-bit floating point as in upstream scikit-image. This change was made to improve performance and reduce memory consumption.

Although not new to this release, we would like to encourage users to set the CUPY_ACCELERATORS environment variable to "cub,cutensor". This improves the performance of many functions involving histograms (e.g. cucim.skimage.filters.threshold_otsu) or reduction operations (e.g. cucim.skimage.transform.integral_image).

Additional details of the changes in this release are given below.

🚨 Breaking Changes

• Promote small integer types to single rather than double precision (#278) @grlee77

🐛 Bug Fixes

• Populate correct channel names for RGBA image (#294) @gigony
• Merge branch-22.04 into branch-22.06 (#258) @jakirkham
• Fix: return object-typed properties as NumPy arrays in skimage.measure.regionprops_table (#272) @alxndrkalinin

📖 Documentation

• update outdated links to example data (#289) @grlee77
• Add missing API docs (#275) @grlee77

🚀 New Features

• add missing cucim.skimage.segmentation.clear_border function (#267) @grlee77
• add cucim.core.operations.color.stain_extraction_pca and cucim.core.operations.color.normalize_colors_pca for digital pathology H&E stain extraction and normalization (#273) @grlee77, @drbeh

🛠️ Improvements

• Update to use DLPack v0.6 (#295) @gigony
• Remove plugin-related messages temporarily (#291) @gigony
• Simplify recipes (#286) @Ethyling
• Use cupy.fuse to improve efficiency hessian_matrix_eigvals (#280) @grlee77
• Promote small integer types to single rather than double precision (#278) @grlee77
• improve efficiency of histogram-based thresholding functions (#276) @grlee77
• Enable footprint decomposition for morphology (#274) @grlee77
• Remove unused dependencies in GPU tests job (#268) @Ethyling
• Use conda compilers (#232) @Ethyling
• Build packages using mambabuild (#216) @Ethyling

New Contributors

• Alexandr Kalinin (@alxndrkalinin) made their first contribution in #272
• Behrooz Hashemian (@drbeh) made their first contribution in #273