Name                    Last modified       Size  Description

 Parent Directory        21-May-2005 20:15      -  
 python-style.css        21-May-2005 20:16     1k  
 pytiff-0.1.6.tar.gz     13-Jun-2005 01:28   2.8M  
 pytiff.html             07-Jul-2005 02:32    41k  

PyTIFF

Introduction

PyTIFF is a library for using TIFF files and advanced imaging in Python. To install pytiff, download the current tar.gz archive and unpack in a directory of your choice. Then, provided you have the necessary software installed, you can install pytiff with python setup.py install, or type python setup.py --help for more information. The library is documented in pytiff.html. Have fun!

Upcoming release 0.2

I very much appreciate the valuable suggestions, bugfixes, and encouraging emails I have received in response to the first release of PyTIFF. The next release, due this spring or summer, will offer the following additional features:

• Numerous bugfixes
• Better support for sample formats other than unsigned integer. (Signed integer, floating point, and complex numbers)
• Support for SGI's extension for three-dimensional data.
• A restructured data format for MemoryImage. All data will be held as a continuous bit stream, most-significant bit first, little-endian. This will cost some performance for really odd sample formats and on big-endian machines (i.e. Intel and friends), but greatly simplify the code and thus increase the library's reliability and extensibility.
• fromstring and tostring routines to import and export data.
• Smooth integration with PIL and Numeric.
• Decent documentation.
• Possibly more liberal licensing terms, but in all cases GPL-compatible.

FAQ

How do I encode an image with a specific compression method?

You can determine how an image will be compressed by setting an appropriate value for the 'compression' key in its metadata. Here is an example to convert all images of a TIFF file to G4 compression. (This will, of course, fail if the source images aren't black and white.)

import pytiff

class AttrChangeFilter:
    def __init__(self, image, new_metadata):
        self.image = image
        self.new_metadata = new_metadata
    def __getattr__(self, attr):
        return getattr(self.image, attr)
    def get_metadata(self):
        return self.new_metadata
    metadata = property(get_metadata, None, None)

r = pytiff.TiffReader("infile.tiff")
w = pytiff.TiffWriter("outfile.tiff")


for p in r:
    m = dict(p.metadata)
    m["compression"] = "T6"
    p = AttrChangeFilter(p, m)
    w.append(p)

Licensing Terms

Copyright © 2005 by Oliver M. Haynold

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.