LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
May 2009
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
Thread
2009.05.08 12:30 "Re: [Q] TIFFReadRGBAImage (about read COMPRESSION_JPEG imagefile) of libtiff.", by <masui.ikuhisa@jsol.co.jp>
Thank you for Mr. Frank
My PC environment is windows XP (SP2) - Visual Studio2005.
The following were put on the execution folder.
libtiff3.dll
jpeg62.dll
zlib1.dll
(<- download dll from
http://gnuwin32.sourceforge.net/packages/tiff.htm)
The error message has not come out especially.
It holds out a little more.
-----Original Message-----
From: Frank Warmerdam [mailto:warmerdam@pobox.com]
Sent: Friday, May 08, 2009 12:52 PM
To: masui/増井 郁久
Cc: tiff@lists.maptools.org
Subject: Re: [Tiff] [Q] TIFFReadRGBAImage (about read COMPRESSION_JPEG
imagefile) of libtiff.
masui/増井 郁久 wrote:
> It becomes an error by "TIFFReadRGBAImage" at
> "COMPRESSION_JPEG"-ImageFile(TIFF)
> though it is possible to read at
> "COMPRESSION_CCITTFAX4"-ImageFile(TIFF)
> by the above-mentioned reading method.
>
> How can I read at COMPRESSION_JPEG? <<<<<<<<
Masui,
There are many reasons that TIFFReadRGBAImage() might fail with a jpeg
compressed TIFF and work ok for a CCITTFAX4 image. Was there a particular
error message issued?
One possibility is that support for jpeg images (which requires libjpeg) was
not built in when libtiff was built.
If you can be more specific about the error message - if any - or perhaps
provide the image in question we might be able to help more.
Best regards,
--
---------------------------------------+--------------------------------
---------------------------------------+------
I set the clouds in motion - turn up | Frank Warmerdam,
warmerdam@pobox.com
light and sound - activate the windows | http://pobox.com/‾warmerdam
and watch the world go round - Rush | Geospatial Programmer for Rent