Writing CCITT Fax Group 4 TIF format from Photoshop

Search   Help    Register    Login   Home
Tue, 21 September 2004 08:10 Go to next message
Xerxes (Photoshop begginer)
Dear Newsgroup,

I use Photoshop CS to edit photos primarily.
However, I prefer to use it as my editing tool for all images.
As such I sometimes scan documents and then use Photoshop to correct
blemishes, errors, dark spots, etc. with all the great tools Photoshop has.
So far no problem.
When it comes to outputting the image, as it is a black and
white document, JPG is lossy and ill-suited to this type of image. TIF is
perfect, except in the uncompressed format takes up too much space.
Photoshop CS reads all types of TIF files including raw (uncompressed),
packbits, CCITT 1D, LZW compressed, CCITT Fax Group 3, CCITT Fax Group 4,
JPEG and ZIP (deflate). However, it can only save to raw (uncompressed), LZW
and ZIP (deflate).
The freeware program IrfanView can read and write to all
formats! I would have expected my (more expensive) Photoshop to be able to
do a bit better than that especially since Adobe currently holds the
copyright to the TIFF specification (curently in Version 6).

My question is:
Can Photoshop CS wriste a TIF file in the CCITT Fax Group 4 format? If no,
are there any plugins for it that may be able to do so?


Thanks in advance,

Xerxes
Tue, 21 September 2004 09:15 Go to previous messageGo to next message
Gadgets (Photoshop expert)
Looks like it.

< http://www.google.com/search?hl=en&ie=ISO-8859-1&q=% 22CCITT+Fax+Group+4%22+photoshop+plugin>

Cheers, Jason (remove ... to reply)
Video & Gaming: http://gadgetaus.com
Tue, 21 September 2004 18:32 Go to previous messageGo to next message
toby (Photoshop expert)
"Xerxes" <xerxes_p@hotmail.com> wrote in message news:<0TU3d.38317$D7.3550@news-server.bigpond.net.au>...
> Dear Newsgroup, ... I would have expected my (more expensive) Photoshop to be able to
> do a bit better than that especially since Adobe currently holds the
> copyright to the TIFF specification (curently in Version 6).

You don't know Adobe very well, do you.

>
> My question is:
> Can Photoshop CS wriste a TIF file in the CCITT Fax Group 4 format? If no,
> are there any plugins for it that may be able to do so?

It's trivial to use the tools at http://libtiff.org/ to recompress
your TIFFs G4 (see, in particular, tiffcp). They've even been ported
to Windoze.

--Toby

>
>
> Thanks in advance,
>
> Xerxes
Wed, 22 September 2004 07:50 Go to previous messageGo to next message
Xerxes (Photoshop begginer)
I was naive, I lived in hope. I thought that the all-powerfull, all
encompasing Photoshop CS could handle anything I threw at it.
I was wrong. Please forgive me.

"Toby Thain" <toby@telegraphics.com.au> wrote in message
news:d6ce4a6c.0409211432.4c010fa3@posting.google.com...
> "Xerxes" <xerxes_p@hotmail.com> wrote in message
news:<0TU3d.38317$D7.3550@news-server.bigpond.net.au>...
> > Dear Newsgroup, ... I would have expected my (more expensive) Photoshop
to be able to
> > do a bit better than that especially since Adobe currently holds the
> > copyright to the TIFF specification (curently in Version 6).
>
> You don't know Adobe very well, do you.
>
> >
> > My question is:
> > Can Photoshop CS wriste a TIF file in the CCITT Fax Group 4 format? If
no,
> > are there any plugins for it that may be able to do so?
>
> It's trivial to use the tools at http://libtiff.org/ to recompress
> your TIFFs G4 (see, in particular, tiffcp). They've even been ported
> to Windoze.
>
> --Toby
Fri, 22 October 2004 19:17 Go to previous messageGo to next message
rain97304 (Photoshop begginer)
"Xerxes" <xerxes_p@hotmail.com> wrote in message news:<vGd4d.407$5O5.116@news-server.bigpond.net.au>...
> I was naive, I lived in hope. I thought that the all-powerfull, all
> encompasing Photoshop CS could handle anything I threw at it.
> I was wrong. Please forgive me.
>
> "Toby Thain" <toby@telegraphics.com.au> wrote in message
> news:d6ce4a6c.0409211432.4c010fa3@posting.google.com...
> > "Xerxes" <xerxes_p@hotmail.com> wrote in message
> news:<0TU3d.38317$D7.3550@news-server.bigpond.net.au>...
> > > Dear Newsgroup, ... I would have expected my (more expensive) Photoshop
> to be able to
> > > do a bit better than that especially since Adobe currently holds the
> > > copyright to the TIFF specification (curently in Version 6).
> >
> > You don't know Adobe very well, do you.
> >
> > >
> > > My question is:
> > > Can Photoshop CS wriste a TIF file in the CCITT Fax Group 4 format? If
> no,
> > > are there any plugins for it that may be able to do so?
> >
> > It's trivial to use the tools at http://libtiff.org/ to recompress
> > your TIFFs G4 (see, in particular, tiffcp). They've even been ported
> > to Windoze.
> >
> > --Toby

Trivial; maybe, an actual solution; unfortunately not. TIFFCP
complains about "Bits/sample must be 1 for Group 3/4
encoding/decoding." Bottom line: She donna work. The Utility
TIFFINFO for my test file yields:

j:\My Pictures\2004-10 (Oct)>tiffinfo scan.tif
TIFF Directory at offset 0x8
Subfile Type: multi-page document (2 = 0x2)
Image Width: 841 Image Length: 120
Resolution: 300, 300 pixels/inch
Bits/Sample: 8
Compression Scheme: None
Photometric Interpretation: palette color (RGB from colormap)
Image Description: "LEAD Technologies Inc. V1.01"
Orientation: row 0 top, col 0 lhs
Samples/Pixel: 1
Rows/Strip: 16
Planar Configuration: single image plane
Page Number: 0-0

If anyone knows of a Photoshop plugin or other utility (other than
LibTIFF), please post solution... Thx
Sat, 23 October 2004 11:04 Go to previous messageGo to next message
toby (Photoshop expert)
> > > It's trivial to use the tools at http://libtiff.org/ to recompress
> > > your TIFFs G4 (see, in particular, tiffcp). They've even been ported
> > > to Windoze.
> > >
> > > --Toby
>
> Trivial; maybe, an actual solution; unfortunately not. TIFFCP
> complains about "Bits/sample must be 1 for Group 3/4
> encoding/decoding."

That is correct. They are inherently bilevel formats and can't be
applied to deeper images (this is not a libtiff limitation but is
explicit in the TIFF spec,
http://partners.adobe.com/asn/developer/pdfs/tn/TIFF6.pdf ).

The other TIFF compression types can (LZW, PackBits etc). Why are you
trying to use G3/4 on an 8-bit image?

--Toby

> Bottom line: She donna work. The Utility
> TIFFINFO for my test file yields:
>
> j:\My Pictures\2004-10 (Oct)>tiffinfo scan.tif
> TIFF Directory at offset 0x8
> Subfile Type: multi-page document (2 = 0x2)
> Image Width: 841 Image Length: 120
> Resolution: 300, 300 pixels/inch
> Bits/Sample: 8
> Compression Scheme: None
> Photometric Interpretation: palette color (RGB from colormap)
> Image Description: "LEAD Technologies Inc. V1.01"
> Orientation: row 0 top, col 0 lhs
> Samples/Pixel: 1
> Rows/Strip: 16
> Planar Configuration: single image plane
> Page Number: 0-0
>
> If anyone knows of a Photoshop plugin or other utility (other than
> LibTIFF), please post solution... Thx
Mon, 25 October 2004 12:08 Go to previous message
rain97304 (Photoshop begginer)
toby@telegraphics.com.au (Toby Thain) wrote in message news:<d6ce4a6c.0410230704.73840c8b@posting.google.com>...
> > > > It's trivial to use the tools at http://libtiff.org/ to recompress
> > > > your TIFFs G4 (see, in particular, tiffcp). They've even been ported
> > > > to Windoze.
> > > >
> > > > --Toby
> >
> > Trivial; maybe, an actual solution; unfortunately not. TIFFCP
> > complains about "Bits/sample must be 1 for Group 3/4
> > encoding/decoding."
>
> That is correct. They are inherently bilevel formats and can't be
> applied to deeper images (this is not a libtiff limitation but is
> explicit in the TIFF spec,
> http://partners.adobe.com/asn/developer/pdfs/tn/TIFF6.pdf ).
>
> The other TIFF compression types can (LZW, PackBits etc). Why are you
> trying to use G3/4 on an 8-bit image?
>
> --Toby
>
> > Bottom line: She donna work. The Utility
> > TIFFINFO for my test file yields:
> >
> > j:\My Pictures\2004-10 (Oct)>tiffinfo scan.tif
> > TIFF Directory at offset 0x8
> > Subfile Type: multi-page document (2 = 0x2)
> > Image Width: 841 Image Length: 120
> > Resolution: 300, 300 pixels/inch
> > Bits/Sample: 8
> > Compression Scheme: None
> > Photometric Interpretation: palette color (RGB from colormap)
> > Image Description: "LEAD Technologies Inc. V1.01"
> > Orientation: row 0 top, col 0 lhs
> > Samples/Pixel: 1
> > Rows/Strip: 16
> > Planar Configuration: single image plane
> > Page Number: 0-0
> >
> > If anyone knows of a Photoshop plugin or other utility (other than
> > LibTIFF), please post solution... Thx

Toby, I'm designing a document generation platform, and the doc
generation engine imposes the limitation of signatures being defined
to the CCITT group 4 spec. So I have all the current Adobe tools, but
I'll be darned if I can find a way to convert to that format. So, I'm
wondering why the signatures I'm working with are 8-bit... When I
capture scan image (either via HP scan utilities or via PhotoShop CS),
I'm requesting black and white, not grayscale. I'll look on the
capture end for now. Thanks for the reply.
Create a new topic Submit Reply
Previous Topic: ha ha
Goto Forum:

Adobe Photoshop

Adobe Photoshop techniques & help
Photoshop for Windows
Photoshop for Mac
Technical questions

Photoshop Elements

Adobe Photoshop Elements