pyspeckle

pyspeckle is a Python library for generating and analyzing laser speckle fields. It provides reproducible numerical implementations of physically motivated speckle models used in optical metrology, coherent imaging, and biomedical photonics.

The methods implemented in this package are derived from Duncan & Kirkpatrick (Algorithms for simulation of speckle (laser and otherwise), Proc. SPIE 6855, 2008). These algorithms unify a variety of simulation approaches across:

objective speckle (non-imaged fields),
subjective speckle (imaged fields),
static speckle, and
dynamic speckle including translation, strain, boiling, and decorrelation.

Scientific Context

Coherent imaging systems—including SAR, OCT, ultrasound, ESPI, and laser speckle contrast imaging—produce granular interference patterns defined by the random phase relationships of scattered waves.

Representative Outputs

1D speckle

2D speckle

Documentation

Full documentation and algorithm demonstrations are available at:

https://pyspeckle2.readthedocs.io

Try in JupyterLite (no install required):

https://scottprahl.github.io/pyspeckle/

Installation

pip:

pip install pyspeckle

conda:

conda install -c conda-forge pyspeckle

Citation

If you use pyspeckle in academic, instructional, or applied technical work, please cite:

Prahl, S. (2025). pyspeckle: Tools for objective and subjective laser speckle analysis (Version 0.6.0) [Computer software]. Zenodo. https://doi.org/10.5281/zenodo.8311677

BibTeX

@software{pyspeckle_prahl_2025,
  author    = {Scott Prahl},
  title     = {pyspeckle: Tools for objective and subjective laser speckle analysis},
  year      = {2025},
  version   = {0.6.0},
  doi       = {10.5281/zenodo.8311677},
  url       = {https://github.com/scottprahl/pyspeckle},
  publisher = {Zenodo}
}

License

pyspeckle is released under the MIT License. Contributions are welcome.

Release files for pyspeckle 0.6.1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for pyspeckle 0.6.1
File	Size	Uploaded
pyspeckle-0.6.1.tar.gz	15.4 kB	Jan 5, 2026	Details

Built distribution (wheel)

Table of built distributions (wheels) for pyspeckle 0.6.1
File	Interpreter	ABI	Platform	Reset
pyspeckle-0.6.1-py3-none-any.whl 10.4 kB Jan 5, 2026	Python 3	none	any	Details

Total release size: 25.8 kB

Release files / pyspeckle-0.6.1.tar.gz

Download URL	pyspeckle-0.6.1.tar.gz
Size	15.4 kB
Tags	Source
SHA-256 checksum How to use checksums	`b5b3077914969ec6c6873906b5172732614b68c027735bfd7f2e0bca7892177c`
BLAKE2b-256 checksum How to use checksums	`3cf879757c048344518f2f148bfcc7a1fa16220dc8af482c2b8dd80c4b53300b`
Upload date	Jan 5, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	Yes
Uploaded via	`twine/6.1.0 CPython/3.13.7`

Provenance

Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.

Identity

Publishing platform: GitHub Actions
Publishing repository: github.com/scottprahl/pyspeckle
Publishing commit: github.com/scottprahl/pyspeckle/tree/dd56d1f84ae3b3f4060f74567f73ad153c8dbf56

Workflow

Publishing configuration: github.com/scottprahl/pyspeckle/blob/dd56d1f84ae3b3f4060f74567f73ad153c8dbf56/.github/workflows/pypi.yaml
Publishing logs: github.com/scottprahl/pyspeckle/actions/runs/20721732162/attempts/1

Artifact

Subject: pyspeckle-0.6.1.tar.gz
SHA-256 checksum: b5b3077914969ec6c6873906b5172732614b68c027735bfd7f2e0bca7892177c Verifying attestations

Release files / pyspeckle-0.6.1-py3-none-any.whl

Download URL	pyspeckle-0.6.1-py3-none-any.whl
Size	10.4 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`064938d19a6fa4a9db13719f4185f33983175b2a23e5b91369e05ab09d04ed2e`
BLAKE2b-256 checksum How to use checksums	`8250a2bfcddee71bd6c957771c0f59b1ff035f66967af1ce79185db207cf155d`
Upload date	Jan 5, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	Yes
Uploaded via	`twine/6.1.0 CPython/3.13.7`

Provenance

Identity

Publishing platform: GitHub Actions
Publishing repository: github.com/scottprahl/pyspeckle
Publishing commit: github.com/scottprahl/pyspeckle/tree/dd56d1f84ae3b3f4060f74567f73ad153c8dbf56

Workflow

Publishing configuration: github.com/scottprahl/pyspeckle/blob/dd56d1f84ae3b3f4060f74567f73ad153c8dbf56/.github/workflows/pypi.yaml
Publishing logs: github.com/scottprahl/pyspeckle/actions/runs/20721732162/attempts/1

Artifact

Subject: pyspeckle-0.6.1-py3-none-any.whl
SHA-256 checksum: 064938d19a6fa4a9db13719f4185f33983175b2a23e5b91369e05ab09d04ed2e Verifying attestations