Re: [CODE4LIB] viewer for TIFFs on iPad
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
Re: [CODE4LIB] viewer for TIFFs on iPad
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 andrew.hankin...@gmail.com 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
[CODE4LIB] viewer for TIFFs on iPad
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
Re: [CODE4LIB] viewer for TIFFs on iPad
On Thu, May 10, 2012 at 4:16 PM, Edward Iglesias edwardigles...@gmail.com 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... You need something at the server end so you only need to view the part you are zoomed into I have tried diva http://www.collection.archivist.info/diva/systrondonner1626.html#p=99z=3 their demo is at http://ddmal.music.mcgill.ca/diva/demo/ Dave Caroline
Re: [CODE4LIB] viewer for TIFFs on iPad
On May 10, 2012, at 11:16 AM, 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... Are there any other requirements? If it doesn't have to be actually on that machine, and you can interact with a webserver, you might want to consider converting it to JPEG2000, and then using a JPIP server to serve them. The group here that's using it is only serving 16 megapixel images, but the advantage is that you can selectively send only the regions and detail as needed ... but you don't have to generate lots of tiles at different scaling: http://wiki.helioviewer.org/wiki/ESA_JPIP_Server -Joe
