Set of jpg to ePub3 fixed layout

Hi all,

I have several sets of pictures in *.jpg format that I would like to batch convert to ePub3 fixed layout ebooks for use on iDevices with iBooks.

So far, the following solutions are not ideal IMO:

- Convert the set of pics to a pdf file: well it cannot be tagged via iTunes, actually metadata are not writen in the file, and so lost if you re-load the pdf files in iTunes.

- Convert the set of pics to ePub2 via Calibre: because this format does not handle fixed layout, pics are getting resized, wether I would like to retain original full resolution quality.

- Use iBooks Author: I understand I cannot make a standard ePub doc that way (but an Apple proprietary format).

Hope some of you guys can advise me :),
Thanx much !