f | |
| :mod:`jpeg` --- Read and write JPEG files |
| ========================================= |
| |
| .. module:: jpeg |
| :platform: IRIX |
| :synopsis: Read and write image files in compressed JPEG format. |
n | :deprecated: |
| |
| .. deprecated:: 2.6 |
| The :mod:`jpeg` module has been deprecated for removal in Python 3.0. |
| |
| |
| |
| .. index:: single: Independent JPEG Group |
| |
| The module :mod:`jpeg` provides access to the jpeg compressor and decompressor |
| written by the Independent JPEG Group (IJG). JPEG is a standard for compressing |
| pictures; it is defined in ISO 10918. For details on JPEG or the Independent |
| JPEG Group software refer to the JPEG standard or the documentation provided |
| |
| .. index:: |
| single: Python Imaging Library |
| single: PIL (the Python Imaging Library) |
| single: Lundh, Fredrik |
| |
| A portable interface to JPEG image files is available with the Python Imaging |
| Library (PIL) by Fredrik Lundh. Information on PIL is available at |
n | `<http://www.pythonware.com/products/pil/>`_. |
n | http://www.pythonware.com/products/pil/. |
| |
| The :mod:`jpeg` module defines an exception and some functions. |
| |
| |
| .. exception:: error |
| |
| Exception raised by :func:`compress` and :func:`decompress` in case of errors. |
| |
| | | image. This only affects compression. | |
| +-----------------+---------------------------------------------+ |
| | ``'smooth'`` | Perform inter-block smoothing on | |
| | | uncompressed image. Only useful for low- | |
| | | quality images. This only affects | |
| | | decompression. | |
| +-----------------+---------------------------------------------+ |
| |
n | .. % |
| .. % |
| .. % |
| .. % |
| |
| |
| .. seealso:: |
| |
| JPEG Still Image Data Compression Standard |
t | The canonical reference for the JPEG image format, by Pennebaker and Mitchell. |
t | The canonical reference for the JPEG image format, by Pennebaker and Mitchell. |
| |
| `Information Technology - Digital Compression and Coding of Continuous-tone Still Images - Requirements and Guidelines <http://www.w3.org/Graphics/JPEG/itu-t81.pdf>`_ |
| The ISO standard for JPEG is also published as ITU T.81. This is available |
| online in PDF form. |
| |