Hello,
I have JFIF files that are rich in IPTC and EXIF metadata. I
currently use JAI to resize those images to smaller sizes suitable for
publishing on the web. Unfortunately when I perform that resizing in
JAI I lose all of my APP0-APP13 metadata.
Can Sanselan help me?
Can I resize images in Sanselan and preserve the original IPTC/EXIF
metadata?
Alternatively can I read the IPTC/EXIF metadata contained in the APP
sections from my original files and merge it into the images that JAI
produces?
I'm really stuck and I've been working on some prototype python code
to merge in JPEG sections at the byte[] level but it's not working.
I've reviewed a lot of material online and am familiar with some of
the format rules for JPEG/JFIF files. I've even written code that can
harvest the 0xFF 0xED (APP13 section) metadata and drop it into
another file that does not contain 0xFF 0xED. Unfortunately I just
did it at the top of the file (immediately after 0xFF 0xD8) and I
believe that 0xFF 0xE0 is always supposed to immediately follow the
SOS. I parsed out the length of the 0xFF 0xE0 section and tried
inserting my APP13 section AFTER the 0xFF 0xE0 section but that didn't
work.
Any pointers or directions would really be appreciated.
-c
