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Poor image quality post stitching. RRS feed

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    Hi all, i've been using ICE for about 1 year, and i've previously stitched together an image of a bay in cornwall, a rather striking building (well kind of) in the background is in focus and at a high level of detail. Having gone back there again I've taken a similar set of images and composited them again and the image quality is verypoor in that location even though the composite is essentially the same and the source images are similar. I've noticed it with other images too where there is significant image quality degredation (similar to pixels being blurred to x10 normal size, but with no prespective change at that location). Any thoughts? is it possible to download an older version? as I've a feeling this is something that changed beteen versions. If you want examples let me know and i'll figure out where I can put them.

    Other than this issue this is a brilliant application, well done to the devs.

    Tuesday, June 14, 2011 5:19 PM

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    I've just re-installed 1.3.5 which I happened to have lying around and the image quality is a lot better. I'll try and post a section up on picassa or somewhere so you can see what I mean.

     

    Tuesday, June 14, 2011 6:59 PM
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    or maybe not... i'll get back with more as I discover more
    Tuesday, June 14, 2011 7:02 PM
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    I just downloaded it, but the source images are bad quality, so I'm not sure if I'm in the same boat as stevejonesbsl... in some ways I was surprised it defaulted to 100%, but pleased... it was amazingly fast, but I do have some older projects -- will this open them, and then I could do a side by side... :) Looks like awesome work, looking forward to seeing the video and other features...  I'm assuming you are using some new stitching algorithms to get the speed, etc. very nice over all.

     

    Stevejones I'm looking forward to learning what you find.

    Wednesday, June 15, 2011 12:52 AM
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    OK Solved... its a 36K x 8K image, and only picassa (sorry for swearing) photo viewer seems to refine it properly, internal viewer in picassa was left for >5mins and it didn't refine, windows didn't seem to refine it properly, quicktime doesn't open it, i've some others that picassa claim are invalid images sometimes, but these are 29k x 25k.

    Looking at it it almost seems to be a timeout issue when viewers are trying to open larger images, i'm opening them over an internal network and can copy a 50MB file in <1s? Not sure, but the images are correct just that some of them don't open properly.

     

    Tuesday, June 28, 2011 10:10 AM
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    Nothing to help i'm afraid, i'm working with 18MP source images, if the source quality isn't there then its not there. I was getting issues where the source was good but the merged was poor.
    Tuesday, June 28, 2011 10:12 AM
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    And for those that are interested here's the finished panorama, shame the sky wasn't too nice that day... It was the house on the hill near the pub that was the clue that it wasn't resolving, but this looks fine now.

    http://photosynth.net/view.aspx?cid=4abf63dc-16ce-433f-93c5-c40f19f958ca&m=false&i=0:0:0&c=0:0:0&z=585.144497823686&d=-1.12807882674584:-1.07861349249126:-1.23500943134013&p=0:0&t=False

    You can see my 2010 version which was ruined for other reasons, I want something that is able to be put on a wall. Maybe next year :)

    I'm marking this as solved as I believe that there is no problem, or there is a problem with how the JPG's are encoded.

    • Proposed as answer by auniquename Tuesday, June 28, 2011 11:10 AM
    • Marked as answer by stevejonesbsl Wednesday, June 29, 2011 3:27 PM
    Tuesday, June 28, 2011 11:09 AM
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    And for those that are interested here's the finished panorama, shame the sky wasn't too nice that day... It was the house on the hill near the pub that was the clue that it wasn't resolving, but this looks fine now.

    http://photosynth.net/view.aspx?cid=4abf63dc-16ce-433f-93c5-c40f19f958ca&m=false&i=0:0:0&c=0:0:0&z=585.144497823686&d=-1.12807882674584:-1.07861349249126:-1.23500943134013&p=0:0&t=False

    You can see my 2010 version which was ruined for other reasons, I want something that is able to be put on a wall. Maybe next year :)

    I'm marking this as solved as I believe that there is no problem, or there is a problem with how the JPG's are encoded.


    that was me, wrong WLID sorry.
    Wednesday, June 29, 2011 3:27 PM