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Sony Develops TVs That Zoom in for True Close-ups
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.
True zoom is a bit of a stretch.. The only way you could have a true zoom is if you have a higher resolution digital image to look at, or an analog image... This produce creates sophisticated, but generated results. There is nothing true about it.
Regardless, this is one of those features that "sounds nice", but I think its the company telling the consumer what to want rather than vice versa. Never once have I wanted to zoom in on a modern or high def television image.
Come on. "true zoom" requires data that simply isn't there in a TV signal.
Sure, an HD signal can be zoomed and interpolated to some extent, but call it "creation" or not, there is only so much info that can be "guessed".
Yet all DVRs on the market currently use MPEG compression to put more data on the HD at the expense of video quality... so, they're not even storing all the video in that came from the original TV station feed to begin with. I'm not quite sure what Sony's magic tech will do when asked to zoom in on an MPEG artifact...
my 4 year old dvd player has 16x zoom. big deal. used it once.
...Sci-fi's that use arbitrary plot fixes on photos that lack the resolution they need by using a computer to "zoom in and enhance" the image. Sometimes it's so ridiculous that I wanna belch. The only way this could truely be accurate is if the TV signal carries more data (for example, zooming on a 1080i HD signal). But HD has yet to approach critical mass...ugh.
Why can't all fpga/microcontroller manufacturers just release free optimizing compilers???
I refuse to accept "digital zoom" as being any better than just putting a magnifying glass next to the same old low res image.
Well, it is better because in the digital domain it is possible to do a lot of operations more complex than just a magnification. A lot of these operations get lumped in to the "digital zoom" name.
Come on, it's trying to create data that just plain isn't coming from the original source, therefore
This is somewhat true but not completely. What you're forgetting is that the human visual apparatus is part of the complete system and can't be left out. Our vision system is good at detecting certain features at certain resolutions, and not so good at others. Some image processing algorithms might just "make up stuff". This too, is not necessarily bad if it can give a pleasing effect to the eye. Especially if there is a high degree of likelihood that what it is making up is an accurate representation of what actually existed before it was lost by the original signal recording.
Manytimes however, the enhancement consists of emphasizing certain things in the time or frequency domain that really do exist in the original signal but our vision does not detect because of the relationship to other nearby features. Image enhancement is not necessarily making things up. It is just using known facts about the human visual system to selectively bring out certain features that might be missed with our brain's stock detection circuitry.
What is funny about a lot of "anti digital effects" people is that they think they are automatically getting better results by having say a 48-bit scanner vs a 30-bit one because there is more information, nevermind that the lower bits are completely overwhelmed by noise and shitty A-D conversion path.
In your defense, the posting sounds very stupid and marketing influenced (redundant, I know) Calling something like this true zoom, even with the single quotes is very disingenous.
All electronic cameras have fixed noise patterns. They vary from camera to camera usually, but with several frames and now commonly available software, you can detect the pattern, clean it up, and interpolate the data from where it was with a good deal of precision.
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