2003.09.30 14:57 "[Tiff] Reading thumbnail", by so so
Thread
2003.10.01 12:27 "[Tiff] Reading thumbnail", by so so
--- Marco Schmidt <marcoschmidt@users.sourceforge.net>
On Tue, 30 Sep 2003 23:57:56 +0900 (JST), you wrote:
By reading TIFF Specification, full-size image is in IFD0 and
No, not really. Sometimes a thumbnail gets stored as a second image in the TIFF file. Sometimes there is no thumbnail. Sometimes there is a second image, but it's not a thumbnail version of the first image.
So I'd be careful making assumptions about what you can find in a TIFF file.
Thank you for your advice!!
I confused TIFF with EXIF.
at last,
I could get thumbnail data created by Photoshop.
- I modified libtiff to get the value of tag 34377.
- I read ID 1033 and 1036 in the data.
more detail, http://partners.adobe.com/asn/developer/pdfs/tn/PhotoshopFileFormats.pdf
thanks.