Bump imagecodecs from 2023.9.18 to 2026.3.6

[dependabot]

Bumps imagecodecs from 2023.9.18 to 2026.3.6.

Release notes

Sourced from imagecodecs's releases.

v2026.3.6

Image transformation, compression, and decompression codecs

Imagecodecs is a Python library that provides block-oriented, in-memory buffer transformation, compression, and decompression functions for use in tifffile, liffile, czifile, zarr, and other scientific image input/output packages.

Decode and/or encode functions are implemented for Zlib (DEFLATE), GZIP, LZMA, ZStandard (ZSTD), Blosc, Brotli, Snappy, BZ2, LZ4, LZ4F, LZ4HC, LZ4H5, LZW, LZO, LZF, LZFSE, LZHAM, PGLZ (PostgreSQL LZ), RCOMP (Rice), ZFP, SZ3, Meshopt, Pcodec, SPERR, AEC, SZIP, LERC, EER, NPY, BCn, DDS, BMP, PNG, APNG, GIF, TIFF, WebP, JPEG (2 to 16-bit), Lossless JPEG (LJPEG, LJ92, JPEGLL), JPEG 2000 (JP2, J2K), High-throughput JPEG 2000 (HTJ2K, JPH), JPEG LS, JPEG XL, JPEG XS, JPEG XR (WDP, HD Photo), Ultra HDR (JPEG_R), MOZJPEG, AVIF, HEIF, QOI, RGBE (HDR), PixarLog, Jetraw, DICOM RLE, CCITT (RLE, T.4 and T.6), PackBits, Packed Integers (TIFF, MONO p and packed), Delta, XOR Delta, Floating Point Predictor, Bitorder reversal, Byteshuffle, Bitshuffle, Float24 (24-bit floating point), Bfloat16 (brain floating point), Quantize (Scale, BitGroom, BitRound, GranularBR), and CMS (color space transformations). Checksum functions are implemented for CRC-32, Adler-32, Fletcher-32, and Jenkins lookup3.

Changes

• Add CCITTRLE, CCITTFAX3 and CCITTFAX4 codecs (decode only).
• Implement packints_encode function.
• Support lerc subcodec in tiff_encode function.
• Support packed integers, ccitt and pixarlog compression in TIFF codec.
• Support bitorder option in PACKINTS codec.
• Support rounding in BFLOAT16 codec.
• Support more BMP types.
• Update PCODEC to new API.
• Fix buffer overflows in third-party code.
• Fix code review issues.

v2026.1.14

Image transformation, compression, and decompression codecs

Imagecodecs is a Python library that provides block-oriented, in-memory buffer transformation, compression, and decompression functions for use in tifffile, liffile, czifile, zarr, and other scientific image input/output packages.

Decode and/or encode functions are implemented for Zlib (DEFLATE), GZIP, LZMA, ZStandard (ZSTD), Blosc, Brotli, Snappy, BZ2, LZ4, LZ4F, LZ4HC, LZ4H5, LZW, LZO, LZF, LZFSE, LZHAM, PGLZ (PostgreSQL LZ), RCOMP (Rice), ZFP, SZ3, Meshopt, Pcodec, SPERR, AEC, SZIP, LERC, EER, NPY, BCn, DDS, BMP, PNG, APNG, GIF, TIFF, WebP, JPEG (2 to 16-bit), Lossless JPEG (LJPEG, LJ92, JPEGLL), JPEG 2000 (JP2, J2K), High-throughput JPEG 2000 (HTJ2K, JPH), JPEG LS, JPEG XL, JPEG XS, JPEG XR (WDP, HD Photo), Ultra HDR (JPEG_R), MOZJPEG, AVIF, HEIF, QOI, RGBE (HDR), Jetraw, DICOM RLE, PackBits, Packed Integers, Delta, XOR Delta, Floating Point Predictor, Bitorder reversal, Byteshuffle, Bitshuffle, Float24 (24-bit floating point), Bfloat16 (brain floating point), Quantize (Scale, BitGroom, BitRound, GranularBR), and CMS (color space transformations). Checksum functions are implemented for CRC-32, Adler-32, Fletcher-32, and Jenkins lookup3.

Changes

• Add tiff_encode function.
• Add extra options for HTJ2K (#134).
• Add linear RGB option to cms_profile.
• Change ZSTD default compression level to 3.

v2026.1.1

Image transformation, compression, and decompression codecs

Imagecodecs is a Python library that provides block-oriented, in-memory buffer transformation, compression, and decompression functions for use in tifffile, liffile, czifile, zarr, and other scientific image input/output packages.

Decode and/or encode functions are implemented for Zlib (DEFLATE), GZIP, LZMA, ZStandard (ZSTD), Blosc, Brotli, Snappy, BZ2, LZ4, LZ4F, LZ4HC, LZ4H5, LZW, LZO, LZF, LZFSE, LZHAM, PGLZ (PostgreSQL LZ), RCOMP (Rice), ZFP, SZ3, Meshopt, Pcodec, SPERR, AEC, SZIP, LERC, EER, NPY, BCn, DDS, BMP, PNG, APNG, GIF, TIFF, WebP, JPEG (2 to 16-bit), Lossless JPEG (LJPEG, LJ92, JPEGLL), JPEG 2000 (JP2, J2K), High-throughput JPEG 2000 (HTJ2K, JPH), JPEG LS, JPEG XL, JPEG XS, JPEG XR (WDP, HD Photo), Ultra HDR (JPEG_R), MOZJPEG, AVIF, HEIF, QOI, RGBE (HDR), Jetraw, DICOM RLE, PackBits, Packed Integers, Delta, XOR Delta, Floating Point Predictor, Bitorder reversal, Byteshuffle, Bitshuffle, Float24 (24-bit floating point), Bfloat16 (brain floating point), Quantize (Scale, BitGroom, BitRound, GranularBR), and CMS (color space transformations). Checksum functions are implemented for CRC-32, Adler-32, Fletcher-32, and Jenkins lookup3.

Changes

• Enforce positional-only and keyword-only parameters (breaking).
• Base numcodecs.Jpeg on JPEG8 codec (breaking).
• Add HTJ2K codec based on OpenJPH library (#125).
• Add MESHOPT codec based on meshoptimizer library.
• Fix decoding concatenated ZStandard frames.
• Fix potential issues in TIFF and WEBP codecs.
• Fix pyi stub file.

... (truncated)

Changelog

Sourced from imagecodecs's changelog.

2026.3.6

• Add CCITTRLE, CCITTFAX3 and CCITTFAX4 codecs (decode only).
• Implement packints_encode function.
• Support lerc subcodec in tiff_encode function.
• Support packed integers, ccitt and pixarlog compression in TIFF codec.
• Support bitorder option in PACKINTS codec.
• Support rounding in BFLOAT16 codec.
• Support more BMP types.
• Update PCODEC to new API.
• Fix buffer overflows in third-party code.
• Fix code review issues.

2026.1.14

• Add tiff_encode function.
• Add extra options for HTJ2K (#134).
• Add linear RGB option to cms_profile.
• Change ZSTD default compression level to 3.

2026.1.1

• Enforce positional-only and keyword-only parameters (breaking).
• Base numcodecs.Jpeg on JPEG8 codec (breaking).
• Add HTJ2K codec based on OpenJPH library (#125).
• Add MESHOPT codec based on meshoptimizer library.
• Fix decoding concatenated ZStandard frames.
• Fix potential issues in TIFF and WEBP codecs.
• Fix pyi stub file.
• Change default Brotli compression level to 4.
• Use Brotli streaming API for decoding.
• Enable decoding UltraHDR to uint16.
• Tweak memory allocation and reallocation strategies.
• Use fused types.
• Improve code quality.

2025.11.11

• Fix EER superresolution decoding (breaking; see tifffile #313).
• Add option to eer_decode to add to uint16 array.
• Add option to specify CICP/NCLX parameters in avif_encode (#131).
• Add BFLOAT16 codec.
• Build ABI3 wheels.
• Require Cython >= 3.2.
• Deprecate Python 3.11.

2025.8.2

• Fix szip_encode default output buffer might be too small (#128).
• Fix minor bugs in LZ4H5 codec (#127).

... (truncated)

Commits

• f47e63c Release v2026.3.6
• ee5ff9f Update CHANGES.rst
• 4a86e97 Update imagecodecs/imagecodecs.py
• 38955b7 Update imagecodecs/libaec.pxd
• 003780c Update tests/test_imagecodecs.py
• bf404a4 Update imagecodecs/imcd.c
• e7134b5 Update testimages.py
• 742e619 Update imagecodecs/libjpeg.pxd
• 2de5984 Update imagecodecs/_bmp.pyx
• a8b6c55 Update imagecodecs/imcd.h
• Additional commits viewable in compare view

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