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There was a recent paper / article that described an algorithm for upscaling an image. I can't find the name of that algorithm or the article but it worked with a single image (rather than multiple) to achieve really good results. If I saw the name of it I'd recognize it.

Once I find it I'm hoping there's a JavaScript, Java or ActionScript library. So any libraries specifically ActionScript or JS would help me narrow it down.

1.21 gigawatts
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    What you are looking for is **super resolution**. There are **a lot** of research papers that have been produced over the last decade that talk about this. Saying a "recent paper / article" is not enough. There are at least a few papers that get written every few months that talk about it. You can start by reading the Wikipedia article on the topic: http://en.wikipedia.org/wiki/Superresolution . Pay specific attention to the bottom of the post. There is an extensive list of papers that you can sift through and learn about it. I can't comment on the availability of a JS library though. – rayryeng Apr 06 '15 at 03:51
  • Thanks. I remember now that this one worked with *one* image rather than multiple. I'll update the main post. – 1.21 gigawatts Apr 06 '15 at 03:56

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I found it here. It doesn't look like it has a name except, "SingleImageSR".

1.21 gigawatts
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    Check out this link as well. More recent: https://sites.google.com/site/jbhuang0604/publications/struct_sr - That method you referenced (I actually know the main author) is from 2009, but it's still very applicable and I have used it in the past. What threw me off was when you said "recent". If you didn't say "recent", what you posted is what I would have suggested first! – rayryeng Apr 06 '15 at 05:46
  • Yep. It was recent to me. I noticed it was from 2009 when I was searching and didn't think it was the same paper at first. This is really interesting. – 1.21 gigawatts Apr 06 '15 at 06:10
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    It certainly is! Unfortunately I haven't found a JS library for you to use... but perhaps you can implement one of the two methods yourself. Two very good JS libraries you can use that can serve as a backbone are JSFeat and tracking.js: http://inspirit.github.io/jsfeat/, http://trackingjs.com/ – rayryeng Apr 06 '15 at 06:12