Posted by
ctrueden on
Aug 16, 2006; 8:44pm
URL: http://imagej.273.s1.nabble.com/Run-Length-Encoding-tp3701833p3701836.html
Hi Kyle,
Ah, sounds like you are talking about TIFFs compressed with the CCITT_1D
compression scheme (CCITT Group 3 1-Dimensional Modified Huffman run length
encoding). Unfortunately, the Bio-Formats plugin (
http://www.loci.wisc.edu/ome/formats.html) does not currently support that
compression scheme. But if you send me some of your compressed files, I can
work on it and get back to you. In the meantime, you could try a program
like ImageMagick to convert them on the command line into something more
manageable.
Thanks,
Curtis
On 8/16/06, Siptroth, Kyle M. <
[hidden email]> wrote:
>
> Curtis,
>
> I appreciate the reply. I think the base format is Huffman but I'm not
> sure. I do know they are fax images. Not sure if that helps. Is
> Bio-Formats a plug-in? Thanks
>
> Kyle
>
> -----Original Message-----
> From: ImageJ Interest Group [mailto:
[hidden email]] On Behalf Of
> Curtis Rueden
> Sent: Wednesday, August 16, 2006 3:24 PM
> To:
[hidden email]
> Subject: Re: Run Length Encoding
>
> Hi Kyle,
>
> There is some logic in Bio-Formats to handle RLE (specifically TIFF
> PackBits, as well as the QuickTime run-length encoding scheme, which is
> kind of messy). What format exactly are you talking about? Is it just
> raw RLE-encoded pixels? Or part of another file format?
>
> -Curtis
>
> On 8/16/06, Siptroth, Kyle M. <
[hidden email]> wrote:
> >
> > Hello,
> >
> > Is anyone aware of a i/o plugin available that is able to read run
> > length encoded files? Thanks
> >
> > Kyle Siptroth
> > RADIC Program - Tools IPT
> > Northrop Grumman IT/TASC
> > 2701 Technology Dr., Annapolis Junction MD 20701
> > 240-568-2258
> >
>