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Trevor.Dennis
Community Expert
Trevor.DennisCommunity Expert
Community Expert
July 24, 2012
Question

'Super Resolution' Upscaling Algorithm

  • July 24, 2012
  • 3 replies
  • 24047 views

This was linked from a flickr group, and I am not sure how new the paper is, but it is very impressive. I didn't even try to read or follow the complicated bits, but it compares various up-scaling methods with what they are calling a Super Resolution method, and the difference is amazing.

http://www.wisdom.weizmann.ac.il/~vision/SingleImageSR.html

ISTR that it was a couple of Weizmann Institute guys that first demonstrated Content Aware Scale/Fill, so - if that is right - they probably have a relationship with Adobe.  Something for the next Adobe Max perhaps?

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    3 replies

    Noel Carboni
    Noel Carboni
    Legend
    July 24, 2012

    Some nice marginal improvements, but I don't know if it's "wow" material...

    Anyone who's pondered the mechanics of JPEG compression has probably thought of using a database of imagery to "make up" missing detail, and there are already good commercial upsampling tools that can make good 400% enlargements.  An OnOne Software plug-in called Perfect Resize 7 is based on technology that recognizes recurring fractal patterns in imagery, and has been a commercial product (in the prior name of Genuine Fractals) for quite a long time.

    The results shown on the Weizmann page seem only marginally better in some cases and a bit worse (with more artifacts) in others compared to Perfect Resize results.

    Example:  Super-Resolution result vs. the OnOne Software Perfect Resize plug-in + some USM:

    http://www.wisdom.weizmann.ac.il/~vision/single_image_SR/kitchen/res.png

    http://Noel.ProDigitalSoftware.com/ForumPosts/PR7.png

    -Noel

    conroy
    conroy
    Participating Frequently
    July 24, 2012

    Noel, your kitchen image is an interesting example of how the OnOne method produces an extremely synthetic result, similar to an image which has had some kind of "watercolour paint" or "paint daubs" or "palette knife" filter applied. The Super Resolution result is softer than the OnOne but looks more like a photograph and less like a deliberately filtered image, in my opinion.

    Trevor.Dennis
    Community Expert
    Trevor.DennisCommunity ExpertAuthor
    Community Expert
    July 24, 2012

    I was looking at the detail in the knitted material where what was little more than a blur with the other methods, clearly resolved each stitch with the SR method.  Yes there artefacts, but if you needed to use such a tool, your final medium would probably be a large print that would typically be viewed from far enough away to minimise the affect of those artefacts. 

    conroy
    conroy
    Participating Frequently
    July 24, 2012

    Wow!!!

    Thanks for posting!

    c.pfaffenbichler
    Community Expert
    c.pfaffenbichlerCommunity Expert
    Community Expert
    July 24, 2012

    Interesting.

    As that paper is from 2008 I suppose it must have received some consideration at Adobe already.

    JJMack
    Community Expert
    JJMackCommunity Expert
    Community Expert
    July 24, 2012

    c.pfaffenbichler wrote:

    Interesting.

    As that paper is from 2008 I suppose it must have received some consideration at Adobe already.

    Adobe may have see it however I just did a test using one of the example on the web page the eye chart. the origanal upper left corner on to one of Adobe biliner to the right Adobe Bicubic Sharper right of thatr CS6 Bicubic Automatic then their with a blue border.

    Png next if it works

    JJMack
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