ConTeXt support for DjVu backend
Hey list, Are there any plans to eventually support the DjVu format as an additional backend alternative to PDF? DjVu is a free standard promoted as an alternative to PDF. It is allegedly a superior format. https://secure.wikimedia.org/wikipedia/en/wiki/DjVu -- Kip Warner -- Software Engineer OpenPGP encrypted/signed mail preferred http://www.thevertigo.com
On 22-6-2011 9:44, Kip Warner wrote:
Hey list,
Are there any plans to eventually support the DjVu format as an additional backend alternative to PDF? DjVu is a free standard promoted as an alternative to PDF. It is allegedly a superior format.
it's mostly an image format (efficient storage of scanned documents) and in that sense it's an alternative (jbig2 is another candidate) Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
On Wed, 2011-06-22 at 21:51 +0200, Hans Hagen wrote:
it's mostly an image format (efficient storage of scanned documents) and in that sense it's an alternative (jbig2 is another candidate)
Hans
That's what I was thinking too at first, that's it's mostly for scanned documents. But since it is trying to be a replacement for PDF and it has most of the same features, I think it's more than just that now. -- Kip Warner -- Software Engineer OpenPGP encrypted/signed mail preferred http://www.thevertigo.com
On 22-6-2011 10:32, Kip Warner wrote:
On Wed, 2011-06-22 at 21:51 +0200, Hans Hagen wrote:
it's mostly an image format (efficient storage of scanned documents) and in that sense it's an alternative (jbig2 is another candidate)
Hans
That's what I was thinking too at first, that's it's mostly for scanned documents. But since it is trying to be a replacement for PDF and it has most of the same features, I think it's more than just that now.
- the starting point is scanned images - there can be an ocr layer but still the image is the core - pdf is more: colorspaces, vector graphics, annotations, etc So, a djvu document would be less sophisticated. It might not matter for many cases, and one could probably make a backend to produce something reasonable but it's not worth the trouble I fear. As mentioned, it's probably easier to convert the pdf into a djvu with a postprocessor. Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
On Wed, 2011-06-22 at 23:27 +0200, Hans Hagen wrote:
- the starting point is scanned images - there can be an ocr layer but still the image is the core - pdf is more: colorspaces, vector graphics, annotations, etc
So, a djvu document would be less sophisticated. It might not matter for many cases, and one could probably make a backend to produce something reasonable but it's not worth the trouble I fear. As mentioned, it's probably easier to convert the pdf into a djvu with a postprocessor.
Hans
Understood. Thanks. -- Kip Warner -- Software Engineer OpenPGP encrypted/signed mail preferred http://www.thevertigo.com
On 22-6-2011 11:31, Kip Warner wrote:
On Wed, 2011-06-22 at 23:27 +0200, Hans Hagen wrote:
- the starting point is scanned images - there can be an ocr layer but still the image is the core - pdf is more: colorspaces, vector graphics, annotations, etc
So, a djvu document would be less sophisticated. It might not matter for many cases, and one could probably make a backend to produce something reasonable but it's not worth the trouble I fear. As mentioned, it's probably easier to convert the pdf into a djvu with a postprocessor.
Hans
Understood. Thanks.
btw, it would be interesting to have a good open source jbig2 producer (as that is natively supported in pdf) and it's a pretty efficient compression (close to djvu) ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
On Wed, 2011-06-22 at 23:36 +0200, Hans Hagen wrote:
btw, it would be interesting to have a good open source jbig2 producer (as that is natively supported in pdf) and it's a pretty efficient compression (close to djvu)
Interesting. -- Kip Warner -- Software Engineer OpenPGP encrypted/signed mail preferred http://www.thevertigo.com
On Wed 22 Jun 2011, Hans Hagen wrote:
btw, it would be interesting to have a good open source jbig2 producer
I believe https://github.com/agl/jbig2enc is open source, but I don't know whether it fulfils your other criterion of being good. Pont
On 23-6-2011 12:05, Pontus Lurcock wrote:
On Wed 22 Jun 2011, Hans Hagen wrote:
btw, it would be interesting to have a good open source jbig2 producer
I believe https://github.com/agl/jbig2enc is open source, but I don't know whether it fulfils your other criterion of being good.
aha, so someone picked up that thread (years ago, when Hartmut and I looked into it it was rather messy to compile it due to depedencies) looks like a challenge for Luigi (nice topic for context conference too) Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
On Wed 22 Jun 2011, Kip Warner wrote:
Are there any plans to eventually support the DjVu format as an additional backend alternative to PDF? DjVu is a free standard promoted as an alternative to PDF. It is allegedly a superior format.
There's always http://code.google.com/p/pdf2djvu/ in lieu of a direct backend... Pont
participants (3)
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Hans Hagen -
Kip Warner -
Pontus Lurcock