Run Length Encoding

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Run Length Encoding

Siptroth, Kyle M.
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
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Re: Run Length Encoding

ctrueden
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
>
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Re: Run Length Encoding

Siptroth, Kyle M.
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
>
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Re: Run Length Encoding

ctrueden
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
> >
>