Adding custom metadata to jpeg files

Question

I'm working on an Image processing project(C++) and I need to write custom metadata to jpeg file after the processing is complete. How can I accomplish this? Is there any library available to do it ?

score 8 · Accepted Answer · edited Jan 28 '16 at 01:24

8

If you're talking about EXIF Metadata you may want to look at exiv2 which is a C++ library for processing EXIF metadata. There is a second lib which is called libexif and is written in C.

Exiv2 has a view examples on their website and a the API is well documented.

UPDATE: If you want to add custom metadata you could either use the MakerNote or the Comment tag.

Exif Standard: PDF see Section 4.6.5 EXIF IFD Attribute Information Table 7, Tags Relating to User Information.

     MakerNote    Type Undefined Count Any
     Comment      Type Undefined Count Any

which means you're allowed to use those 2 tags for any data you want.

edited Jan 28 '16 at 01:24

SSteve

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answered May 22 '12 at 09:49

dwalter

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is it possible to create custom tags using exiv2 ? – Senan May 22 '12 at 09:55
just updated my answer, you could use the `MakerNote` or the `Comment` tag. I'll add a link to the EXIF Standard – dwalter May 22 '12 at 09:57
Exiv2 allows you to add custom tags under the XMP section. – TimZaman Jan 22 '16 at 13:51

Adding custom metadata to jpeg files

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