2006.09.26 05:46 "Re: [Tiff] Handling of EXIF IFD in Libtiff", by Anurag Singh

On 9/25/06, Phil Harvey <phil@owl.phy.queensu.ca> wrote:

i mean to say is there any other EXIF tag which have offset and on that offset may be some data, just like image data.

I don't know if this is what you mean, but the ExifIFD contains the InteropIFD and the maker notes, both of which may contain pointers to information that must be handled properly when rewriting the image.

thanx to all for the valuable information. I got the link from Joris and studied about it. As Phil said that EXIF IFD contains InteropIFD ( TIFFTAG_INTEROPERABILITYIFD), but i got that this is part of normal image IFD.

Libtiff just read the TIFFTAG_EXIFIFD tag but doen't parse the EXIFIFD. Anyone could suggest me that how it will be handle by libtiff. Or i have to handle it independently without using libtiff.

Act our main aim is to make exact copy of the image, so at this point of time i don't want to ignore any tag or IFD.

Thanks

Anurag

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