AWARE [SYSTEMS] Imaging expertise for the Delphi developer
AWare Systems, Imaging expertise for the Delphi developer, Home TIFF and LibTiff Mailing List Archive

LibTiff Mailing List

TIFF and LibTiff Mailing List Archive
April 2010

Previous Thread
Next Thread

Previous by Thread
Next by Thread

Previous by Date
Next by Date

Contact

The TIFF Mailing List Homepage
This list is run by Frank Warmerdam
Archive maintained by AWare Systems



Valid HTML 4.01!



Thread

2010.04.29 23:38 "Re: "flexible" mode in TIFFClientOpen ?", by Dmitry Fedorov
2010.04.29 23:59 "Re: "flexible" mode in TIFFClientOpen ?", by Toby Thain
2010.04.30 01:35 "Re: "flexible" mode in TIFFClientOpen ?", by Dmitry Fedorov
2010.04.30 02:48 "Flexible Mode", by Richard Nolde
2010.04.30 03:09 "Re: Flexible Mode", by Dmitry Fedorov
2010.04.30 03:30 "Re: Flexible Mode", by Toby Thain
2010.04.30 18:23 "Re: Flexible Mode", by Chris Cox
2010.04.30 00:37 "Re: "flexible" mode in TIFFClientOpen ?", by Bob Friesenhahn
2010.04.30 01:23 "Re: "flexible" mode in TIFFClientOpen ?", by Dmitry Fedorov

2010.04.29 23:38 "Re: "flexible" mode in TIFFClientOpen ?", by Dmitry Fedorov

Hi all,

I work with libbioimage a library used to decode end encode several
biological image formats and their metadata. Many of these are some
variants of TIFF images, usually not exactly well formed but still we
have to decode them. I use libtiff 4 b5 for decoding all of these
variants supplying some run-time fixes to libtiff decoding behavior by
knowing which format variant it is based on existing tags. I do run
into some trouble when libtiff decides the image is invalid it would
not decode it. It may happen for some silly reasons that would not
hinder decoding the image completely. For example: in 1 channel image
photometric is set to PALETTE and no palette is present, libtiff will
stop right there, though if I simply set photometric to MINISBLACK
everything will work.

I could imagine it would be a reasonable proposal to add another
option to the modes passed within TIFFClientOpen to force the decoder
to be less stringent, say "f" for flexible. Thus I could allow certain
flexibility on these decoding issues when I really need to.

I would be more than glad to draft the code change and submit it if it
is considered useful.
Dmitry

-- 
__________________________________

Dmitry Fedorov Levit
  <dima@dimin.net> <http://www.dimin.net/>
Skype: dima_fedorov
Google: fedorov
__________________________________

Center for Bio-Image Informatics:
  <http://www.bioimage.ucsb.edu/>

Vision Research Lab, Electrical and Computer Engineering
Image Registration:
  <http://vision.ece.ucsb.edu/>
  <http://vision.ece.ucsb.edu/registration/demo/>
  <http://regima.dpi.inpe.br/>

University of California, Santa Barbara
_________________________________

DIMIN Viewer n5:
  <http://www.dimin.net/software/viewer/>
__________________________________