Thanks for all of the replies. Yes, hosted JPEG2000 seems the way to
go. I can't even open a 300MB TIFF on an iPad. We use ContentDM to
upload JPEG2000 images right now so serving them would not be an
issue. My basic idea was that in a tablet form with high resolution
images you could pinch and zoom the experience of "holding" a
manuscript would actually be more intimate and closer to the intended
viewing experience of the original creator. That said pixelation is
the enemy. Additionally being able to mark up a digital manuscript
and make a copy for future reference would be valuable.
My original idea was a small class in Special Collections that would
be given matching iPads vs a group that had either access to the
original or high quality reproductions and seeing which group got more
out of it. Putting the images on a server fixes many issues but
creates new ones.
Thanks so much for all your help.
Edward Iglesias
On Fri, May 11, 2012 at 5:14 AM, Andrew Hankinson
<[log in to unmask]> wrote:
> Hi Edward,
>
> A bit of disclosure: I'm one of the developers for Diva.
>
> We have done quite a bit of experimentation for viewing images on various platforms, and even on a Mac Pro with 8GB of RAM and an SSD, 300MB TIFF images still require a bit of waiting for any viewing or operations.
>
> As Dave mentioned, we're developing the Diva viewer to do online viewing. It requires a bit of server setup, but the big advantage is that I find it's actually faster to view large images online in the browser than it is to view them off a hard drive.
>
> These images:
>
> http://coltrane.music.mcgill.ca/salzinnes/experiments/diva-cci-tif/
>
> are approximately 170MB for each page (about 80GB for the whole document), but since we only ever serve out the parts of the document that you are looking at, it makes viewing large medieval manuscripts very easy and fast, without sacrificing the ability to zoom in to see very fine details.
>
> We did a bit of testing on the iPad early on, but haven't tested it since we did another round of development.
>
> If you're interested, let me know and I can help you get it set up.
>
> Cheers,
> -Andrew
>
>
> On 2012-05-10, at 5:16 PM, Edward Iglesias wrote:
>
>> Hello All,
>>
>> I was wondering if any of you had experience viewing large ~300MB and
>> up TIFF files on an iPad. I can get them to the iPad but the photo
>> viewer is less than optimal. It stops enlarging after a while and I'm
>> looking at Medieval manuscripts so...
>>
>>
>> Edward Iglesias
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