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Mahotas-imread is a simple module with a small number of functions:
- imread
- Reads an image file
- imread_multi
- Reads an image file with multiple images. Currently, TIFF and STK (a TIFF sub-based format) support this function.
- imsave
- Writes an image file
Example (which uses mahotas for Gaussian filtering):
from imread import imread, imsave
from mahotas import gaussian_filter
lena = imread('lena.jpeg')
lena = gaussian_filter(lena.astype(float), 4.)
imsave('lena-filtered.jpeg', lena)
This grew out of frustration at current image loading solutions in Python, in either my packages [mahotas] or packages from others [scikit-image, for example].
The relationship with numpy is very contained and this could be easily repurposed to load images in other frameworks, even other programming languages.
Citation
If you use imread on a published publication, please cite the main mahotas paper (imread is a spin-off of mahotas):
Luis Pedro Coelho Mahotas: Open source software for scriptable computer vision in Journal of Open Research Software, vol 1, 2013. [DOI]
In Bibtex format:
@article{mahotas,
author = {Luis Pedro Coelho},
title = {Mahotas: Open source software for scriptable computer vision},
journal = {Journal of Open Research Software},
year = {2013},
doi = {http://dx.doi.org/10.5334/jors.ac},
month = {July},
volume = {1}
}
Dependencies
To install on debian/ubuntu:
sudo apt-get install libpng12-dev libtiff4-dev libwebp-dev sudo apt-get install xcftools
To install on Mac:
sudo port install libpng tiff webp
Bug Reports
Please report any bugs either on github or by email to luis@luispedro.org
If you are not sure of whether this is the correct behaviour, you can discuss this on the pythonvision mailing list
If at all possible, include a small image as a test case.
Travis Build Status
Python versions 2.6, 2.7 and 3.3 are officially supported.
Python 3.4 should also work (submit a bug report if it does not). Python 3.2 (and earlier versions in the Python 3 series) are officially not supported.
History
Version 0.3.1 (2013-06-20)
- Fix possible crash on error with TIFF
- Fix compilation on Windows (reported by Volker Hilsenstein)
- Make it easy to compile without WebP
Version 0.3.0 (2013-07-29)
- Support for reading from in-memory blobs
- Support for reading & writing TIFF metadata
- Add PHOTOMETRIC tag to TIFF (reported by Volker Hilsenstein)
- Support writing RGB TIFFs
Version 0.2.6 (2013-06-19)
- Fix hard crash when saving with non-existing file type
- Fix compilation on MacOS (patch by Alexander Bohn)
- Add verbose argument to tests.run()
- Better error when attempting to save floating point images
Version 0.2.5 (2012-10-29)
- Correctly accept uppercase extensions
- Python 3 support (patch by Christoph Gohlke [pull request 8 on github])
- Read 1-Bit PNGs
- Read simple BMPs (compression and many bit types not supported)
- More complete debug mode (export DEBUG=2 when building), more checks
Version 0.2.4 (2012-06-26)
- Add lzw.cpp to source distribution
- Support saving 16-bit TIFF
- Better Mac OS support (patch from Alexander Bohn)
Version 0.2.3 (2012-06-8)
- Fix imread_multi
Version 0.2.2 (2012-06-5)
- Add formatstr argument to imread
- Open files in binary mode on Windows (patch by Christoph Gohlke)
- Read-only support for LSM files
- Read-only support for XCF files (through xcf2png)
- Fix writing of non-contiguous images (at least PNG was affected)
Version 0.2.1 (2012-02-11)
- Add missing files to distribution
Version 0.2 (2012-03-19)
- Compile on MSVC++ (Patches by Christoph Gohlke)
- Support for WebP
- Support for 1-bit TIFFs
- Better error message
- Support for multi-page TIFF reading
- Experimental read-only support for STK files
Version 0.1 (2012-02-28)
- Support for PNG
- Support for TIFF
- Support for JPEG
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