VoyForums
[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

[ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: [1], 2, 3, 4, 5, 6, 7, 8, 9, 10 ]

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: 10:59:58 10/14/04 Thu
Author: James McLaren
Subject: Re: unsupported compression tag 6
In reply to: Phil Gregory 's message, "Re: unsupported compression tag 6" on 16:42:23 09/14/04 Tue

>For the record. I've worked a little more on this,
>but to no resolution.
It would be nice to get an answer for this one, I'm using envision to view tif files created by QuickScanPro, which was fine for b/w images, but uses compression tag 6 for jpeg compressed greyscale images, or zip compression tag 50013, which isn't supported either. I would switch to another image type, but I need multipage file support. Uncompressed is too big at 9 meg for a 300dpi A4 sheet.

>I couldn't tell exactly which version of libtiff
>Envision uses, but it's older than 3.5.7, which is the
>first version where I actually see the unit for
>handling old-style JPEG compression. (Older version
>have the #defines, just not the code.) I copied over
>the file and massaged the source a bit to get it to
>compile. It appears to compile, but I get access
>violations when I run it. If I have some more time,
>I'll investigate further.

[ Next Thread | Previous Thread | Next Message | Previous Message ]
[ Contact Forum Admin ]

Forum timezone: GMT-5
VF Version: 3.00b, ConfDB:
Before posting please read our privacy policy.
VoyForums(tm) is a Free Service from Voyager Info-Systems.
Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.