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lucasb-eyer / pydensecrf

Sponsor Star 2k

• Code
• Issues
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Python wrapper to Philipp Krähenbühl's dense (fully connected) CRFs with gaussian edge potentials.

machine-learning computer-vision crf cython eigen pairwise-potentials unary-potentials

• Updated Mar 5, 2024
• C++

wmayner / pyemd

Sponsor Star 490

• Code
• Issues
• Pull requests

Fast EMD for Python: a wrapper for Pele and Werman's C++ implementation of the Earth Mover's Distance metric

python distance cython mathematics image-processing scientific-computing metric emd earth-movers-distance

• Updated Feb 27, 2023
• C++

seung-lab / connected-components-3d

Star 437

• Code
• Issues
• Pull requests
• Discussions

Connected components on discrete and continuous multilabel 3D & 2D images. Handles 26, 18, and 6 connected variants; periodic boundaries (4, 8, & 6)

python algorithm cpp numpy cython image-processing neighborhood decision-tree 3d 2d biomedical-image-processing ccl union-find connected-components surface-area 3d-images path-compression cclabel labeling-algorithms periodic-boundary

• Updated Nov 2, 2025
• C++

ing-bank / sparse_dot_topn

Star 417

• Code
• Issues
• Pull requests

Python package to accelerate the sparse matrix multiplication and top-n similarity selection

cython scipy cosine-similarity sparse-matrix

• Updated Dec 16, 2025
• C++

TeskaLabs / cysimdjson

Star 399

• Code
• Issues
• Pull requests

Very fast Python JSON parsing library

python json cython simdjson

• Updated Mar 22, 2024
• C++

stestagg / pytubes

Star 176

• Code
• Issues
• Pull requests

A module for getting data into python from large data sources

python data cpp numpy cython cpp11

• Updated Mar 13, 2024
• C++

fabio86d / HipHop_2D3Dregistration

Star 167

• Code
• Issues
• Pull requests

2D/3D registration between CT/MRI or STL models and X-ray images (November 2018)

python optimization cython registration

• Updated Jan 13, 2019
• C++

bsolomon1124 / pycld3

Star 155

• Code
• Issues
• Pull requests

Python3 bindings for the Compact Language Detector v3 (CLD3)

cpp cython language-detection python3 cld3

• Updated Jun 26, 2023
• C++

aalavandhaann / go-icp_cython

Star 138

• Code
• Issues
• Pull requests

Go-ICP for globally optimal 3D pointset registration

python opengl computer-graphics cython python3 geometry-processing icp autowrap rigid-alignment

• Updated Jun 9, 2022
• C++

jeremymcrae / liftover

Star 94

• Code
• Issues
• Pull requests

liftover for python, made fast with cython

python cython liftover

• Updated Oct 14, 2025
• C++

seung-lab / fastremap

Star 63

• Code
• Issues
• Pull requests

Remap, mask, renumber, unique, and in-place transposition of 3D labeled images. Point cloud too.

python numpy cython looping point-cloud python3 remap biomedical-image-processing array-manipulations unique transpose masking in-place remapping renumbering in-place-transposition

• Updated Dec 10, 2025
• C++

escherba / python-cityhash

Star 46

• Code
• Issues
• Pull requests

Python bindings for FarmHash and CityHash

python cython cityhash farmhash hashing-library pypi-package hashing-functions

• Updated Oct 9, 2025
• C++

Maximilian-Winter / pytonium

Star 46

• Code
• Issues
• Pull requests

This is a framework for building python apps, with a GUI based on the web technologies HTML, CSS and Javascript. Powered by Chromium Embedded Framework.

python cython chromium cython-wrapper

• Updated Oct 1, 2023
• C++

explosion / murmurhash

Star 44

• Code
• Issues
• Pull requests

💥 Cython bindings for MurmurHash2

cython murmurhash murmurhash2

• Updated Nov 14, 2025
• C++

DavidLapous / multipers

Star 34

• Code
• Issues
• Pull requests
• Discussions

Python library for multiparameter persistence

python cpp cython persistent-homology topological-data-analysis tda neurips-2023 multiparameter-persistence icml-2024

• Updated Dec 24, 2025
• C++

scikit-hep / pyjet

Star 33

• Code
• Issues
• Pull requests

The interface between FastJet and NumPy

python numpy cython hep cern scikit-hep

• Updated Jan 6, 2023
• C++

rnowotniak / qopt

Star 29

• Code
• Issues
• Pull requests

Quantum-inspired evolutionary algorithms for Optimization problems

python c algorithms cpp genetic-algorithm cython cuda quantum-computing evolutionary-algorithms cuda-kernels numerical-optimization optimization-algorithms quantum-inspired-genetic-algorithm

• Updated Oct 17, 2021
• C++

celiagg / celiagg

Star 28

• Code
• Issues
• Pull requests
• Discussions

🎨Anti-Grain Geometry for Python with Cython

drawing multi-platform draw-graphics vector cython python-library

• Updated Sep 17, 2025
• C++

mammothb / editdistpy

Sponsor Star 25

• Code
• Issues
• Pull requests

Fast edit distance Python extension written in Cython/C++. Supports Levenshtein distance and Damerau Optimal String Alignment (OSA) distance.

python algorithm cython edit-distance levenshtein levenshtein-distance damerau-levenshtein

• Updated Jun 7, 2025
• C++

MikeSWang / Triumvirate

Star 22

• Code
• Issues
• Pull requests
• Discussions

A Python/C++ package for three-point clustering measurements in LSS analyses

python cpp cython cuda hip large-scale-structure-cosmology clustering-statistics

• Updated Dec 22, 2025
• C++

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