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Sony Develops TVs That Zoom in for True Close-ups

Posted by samzenpus on from the examine-her-on-the-cellular-level dept.

prakslash writes "Sony has unveiled version 2 of its 'Digital Reality Creation' technology that allows viewers to pan around a TV image and then zoom in. Unlike the current TVs that simply scale the image, Sony's technology does 'true' zooming by digitally enhancing the signal to communicate gloss, depth and texture.

3 of 275 comments (clear)

  1. Re:Digital Zoom is a MYTH! by catwh0re · · Score: 4, Interesting
    I think the idea is that on devices which can rec'v HD signal there is alot of image lost in the down scaling process. I'm guessing here, that the sony chip would allow you to "zoom" back to the source resolution. Anything more than that and you're playing the marketing game of something out of nothing.

    Reminds me people that try to add quality to their 96kbps mp3 collection by upsampling them to 256, or recording radio then upsampling that.

  2. Re:Just another algorithm..... by PitaBred · · Score: 4, Interesting

    No, but with video, you have a hell of a lot more information. If they are doing any kind of statistical relationships using more than one frame of the video, they have a LOT more information to work with. A few comparative algorithms, and as things move through lower resolution areas, you can actually get a high resolution picture because of the data that is contained in aggregate.
    That's a hell of a processor they have if it can do that, though.

    --
    My blog. Good stuff (when I remember to update it). Read it.
  3. Re:Good existing zoom implementations by grammar+fascist · · Score: 5, Interesting

    I figured I'd post my own results here.

    It's true that digital zoom can't replace information that was lost due to scaling and sampling. It's possible to get something reasonably close, though. There are a bunch of algorithms available for photographs, but their biggest problem seems to be execution time. It's not pretty.

    Here's mine. Please be kind to the server...

    I've gotten better-looking results since I put that together but I haven't had time to put them up yet. The slowest part of my algorithm requires solving a nonlinear system of nine equations for the least sum squared error per pixel. That's orders of magnitude slower than bicubic interpolation (which is standard).

    I don't know which interpolation algorithms are used for so-called digital zoom. Is there someone in the industry here that knows?

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    I got my Linux laptop at System76.