pylibjpeg-libjpeg

pylibjpeg-libjpeg

A Python 3.8+ wrapper for Thomas Richter's libjpeg, with a focus on use as a plugin for pylibjpeg.

Linux, MacOS and Windows are all supported.

Installation

Dependencies

NumPy

Installing the current release

pip install pylibjpeg-libjpeg

Installing the development version

Make sure Python and Git are installed. For Windows, you also need to install Microsoft's C++ Build Tools.

git clone --recurse-submodules https://github.com/pydicom/pylibjpeg-libjpeg
python -m pip install pylibjpeg-libjpeg

Supported JPEG Formats

Decoding

Encoding

Encoding of JPEG images is not currently supported

Supported Transfer Syntaxes

Decoding

Usage

With pylibjpeg and pydicom

from pydicom import dcmread
from pydicom.data import get_testdata_file

ds = dcmread(get_testdata_file('JPEG-LL.dcm'))
arr = ds.pixel_array

Standalone JPEG decoding

You can also decode JPEG images to a numpy ndarray:

from libjpeg import decode

with open('filename.jpg', 'rb') as f:
    # Returns a numpy array
    arr = decode(f.read())

# Or simply...
arr = decode('filename.jpg')