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Interpolation?

post #1 of 12
Thread Starter 
I can't be 100% certain from what I've been reading online, but I'm trying to look up that smooth effect some HD displays give off, I believe it's called interpolation, please correct me if I'm wrong. This effect in question is how the display puts out an image, but much more smoother than the original, it could be even described as artificial, or slightly sped up feed. I always notice this effect on LED sets with a 120Hz refresh rate, and some of my friends hate it, but I personally love it, especially when gaming or watching animated films.

Now if I got the term interpolation correct, I also believe its a feature exclusively for 120Hz displays?

I ask this as many people on the forums recommend IPS displays, the most commonly recommend being the Dell U2311h I believe, and I'm specifically looking for a set with the feature previously described, but obviously one of good quality. Do IPS displays have such a feature, or give out a smooth (even if artificially) image? as I very much do enjoy it, particularly for gaming.

Or are 120Hz the only displays that offer this feature? If so, where would I go about finding some as I was only able to find 2 models (Acer & Alienware).
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post #2 of 12
There is no such thing as interpolation on computer monitors.
post #3 of 12
Quote:
Originally Posted by chinesekiwi View Post
There is no such thing as interpolation on computer monitors.
Well basically there is but not on any popular ones


For computer monitors, there is something even better. NATIVE 120hz. The 120hz of TVs is not native most of the time. It's interlaced. Native 120hz looks MUCH, MUCH better in games than the fake one. Also there isn't as much input lag on native 120hz.
Edited by De-Zant - 4/2/11 at 4:01am
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post #4 of 12
Thread Starter 
Was I correct with calling it interpolation? or is what I'm describing some innate 120hz trait that has no name?


Quote:
Originally Posted by De-Zant View Post
Well basically there is but not on any popular ones


For computer monitors, there is something even better. NATIVE 120hz. The 120hz of TVs is not native most of the time. It's interlaced. Native 120hz looks MUCH, MUCH better in games than the fake one. Also there isn't as much input lag on native 120hz.
How would Native 120hz compare to what I was referring to? does it still give off that effect? and how do IPS displays relate in this respect?
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post #5 of 12
Quote:
Originally Posted by Scytus View Post
Was I correct with calling it interpolation? or is what I'm describing some innate 120hz trait that has no name?




How would Native 120hz compare to what I was referring to? does it still give off that effect? and how do IPS displays relate in this respect?

Interpolation means that values have been extrapolated.

For instance, a TV gets 2 pieces of information every 2 seconds (for example), but it wants to display 4 pieces of information.

If the 2 values it received were 2 and 5, it may interpolate values and try to display 2 3 4 5.

As was just said, monitors don't need to do this because they very often have a 120hz input and don't need to make up information.
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post #6 of 12
Quote:
Originally Posted by Scytus View Post
Was I correct with calling it interpolation? or is what I'm describing some innate 120hz trait that has no name?




How would Native 120hz compare to what I was referring to? does it still give off that effect? and how do IPS displays relate in this respect?
It's called interlaced 120hz.

Native 120hz will not create the unnatural effect in movies. That is the result of non native 120hz producing frames that aren't there, sometimes resulting in a fake looking image. Movies and TV shows are usually 24-29FPS. Interlaced 120hz creates fake frames between those frames. This sometimes looks good, sometimes not. If you get a native 120hz monitor, the effect will not be there.


However, native 120hz will produce a much smoother image in games, without any input lag that fake 120hz monitors have. In games, native 120hz will look very very good provided that you are able to get FPS rates above 60. Any frame rate above 60 will benefit from a native 120hz monitor. No input lag means that your mouse won't be lagging behind at all...
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post #7 of 12
Thread Starter 
Quote:
Originally Posted by De-Zant View Post
It's called interlaced 120hz.

Native 120hz will not create the unnatural effect in movies. That is the result of non native 120hz producing frames that aren't there, sometimes resulting in a fake looking image. Movies and TV shows are usually 24-29FPS. Interlaced 120hz creates fake frames between those frames. This sometimes looks good, sometimes not. If you get a native 120hz monitor, the effect will not be there.


However, native 120hz will produce a much smoother image in games, without any input lag that fake 120hz monitors have. In games, native 120hz will look very very good provided that you are able to get FPS rates above 60. Any frame rate above 60 will benefit from a native 120hz monitor. No input lag means that your mouse won't be lagging behind at all...
Oh okay so it's not called interpolation then?

Also am I a rare breed actually liking the effect it gives off? I think it's stunning for games. Also why would you recommend a native 120hz if it doesn't have the effect I'm looking for? I'm sure the input lag is wonderful, but I want that fluidity I was mesmerized by when I first saw people playing Street Fighter IV on such a display, it looked like it was running at 600 fps from the motions.
Edited by Scytus - 4/2/11 at 4:20am
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post #8 of 12
Quote:
Originally Posted by Scytus View Post
Oh okay so it's not called interpolation then?

Also am I a rare breed actually liking the effect it gives off? I think it's stunning for games. Also why would you recommend a native 120hz if it doesn't have the effect I'm looking for? I'm sure the input lag is wonderful, but I want that fluidity I was mesmerized by when I first saw people playing Street Fighter IV on such a display.
The fluidity is BETTER in games with a native 120hz. Looks a lot better, provided that you can keep at least a constant 100FPS.

I just said that it won't create fake frames if the info is there. An interlaced 120hz monitor will have an effect in a movie that has 25FPS, and in a game with 45FPS. Native 120hz monitors will look much better, but you need to get 100+FPS to really get the effect. However, no movies/TV shows come in 100+FPS, so it will only apply to games.

IPS monitors don't really have reasonably priced 120hz models. IPS just gives you better colours. It's a huge upgrade, but for a gamer maybe not as good as a 120hz monitor.
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post #9 of 12
Thread Starter 
Okay, well now I'm afraid that my rig would need to generate fps 2x faster on a native 120hz than it would on an interlaced model. Is it bad that I'm leaning towards the interlaced models as they would be able to give such effects without requiring the hardware to pump out 100+ fps?
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post #10 of 12
Quote:
Originally Posted by Scytus View Post
Okay, well now I'm afraid that my rig would need to generate fps 2x faster on a native 120hz than it would on an interlaced model. Is it bad that I'm leaning towards the interlaced models as they would be able to give such effects without requiring the hardware to pump out 100+ fps?
For gaming, native 120hz would be a much wiser choice IMHO.

Ok. Even 85FPS is enough to get the effect. But it won't be as strong as it could be.

What kind of rig do you have? Well see if you could get enough FPS.
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