Will a 576p picture upscaled to a 1080p screen look worse than if it was native 576p?

Slim Vision · 03-01-2007, 21:14

I'm going to get a 1080p tv. From what I've read 720p upscales to 1080p okay, however I do have a one or two sources that output in 576p. I know upscaling a 576p picture to 1080p won't make it look any better, but I just wondered if it will actually look any worse than if the 576p picture was displayed on a native screen?

Jarrak · 03-01-2007, 23:14

A native 720p source will scale better to 1080p than a 576p source but there are very few native 720p sources around

Of course a 576p/i source will appear to look better than on SD CRT or other SD display since it's resolution is closer to that of a HD display, the point being that most of the flaws in the compression (talking digital here) are still there but with a lower res screen and probably much smaller as well you can't see them in the first place.

Slim Vision · 04-01-2007, 01:12

Excellent. Thank you for responding.

RJ-Smith · 04-01-2007, 12:37

Interesting question. My understanding is that scaling (making the picture bigger) and upscaling (deriving the missing pixels) are two different things.

If I'm correct, surely we're talking scaling and not upscaling here?

I've just bought a new Surround Sound Receiver and it also has upscaling capabilities to 1080p. I was hoping to use it to upscale my DVD player (576p) and my Xbox 360/HD-DVD Player (1080i) to 1080p.

Slim Vision · 04-01-2007, 13:15

Well I don't know. I may know some of the technical jargon as far as the whole resolution thing goes but certainly not all of it. Scaling... Upscaling... Its was all one and the same thing to me until you mentioned that.

RJ-Smith · 04-01-2007, 13:48

Can't claim to understand it all myself so I could be wrong. Just the way I understood it.

jer1956 · 04-01-2007, 14:55

Quote:

Originally Posted by Slim Vision

I'm going to get a 1080p tv. From what I've read 720p upscales to 1080p okay, however I do have a one or two sources that output in 576p. I know upscaling a 576p picture to 1080p won't make it look any better, but I just wondered if it will actually look any worse than if the 576p picture was displayed on a native screen?

There is no absolute answer, it depends upon the quality of the equipment, and the quality of the signal.

HD dosn't just mean more lines, it really does mean more "definition". It will show you detail in SD signals you never saw before, but will also show how bad the worse broadcasts are as well.

The_KELRaTH · 05-01-2007, 09:42

Upscaling is a mathematical formula to increase the resolution so that the original source material will have the same density as the new higher resolution.

Sony have been using this technique even with their top end CRT TV's to improve image quality ie KV32/36DX200 series.

If the brand just quotes upscaling to HDMI then most likely this is just to 720p not 1080p.

03-01-2007, 21:14	#1
Slim Vision Forum Member Join Date: Oct 2003 Location: The Universe Posts: 27	Will a 576p picture upscaled to a 1080p screen look worse than if it was native 576p? I'm going to get a 1080p tv. From what I've read 720p upscales to 1080p okay, however I do have a one or two sources that output in 576p. I know upscaling a 576p picture to 1080p won't make it look any better, but I just wondered if it will actually look any worse than if the 576p picture was displayed on a native screen? Last edited by Slim Vision : 03-01-2007 at 21:20.

03-01-2007, 23:14	#2
Jarrak Forum Member Join Date: Jan 2002 Location: Ilkeston Posts: 18,075	A native 720p source will scale better to 1080p than a 576p source but there are very few native 720p sources around Of course a 576p/i source will appear to look better than on SD CRT or other SD display since it's resolution is closer to that of a HD display, the point being that most of the flaws in the compression (talking digital here) are still there but with a lower res screen and probably much smaller as well you can't see them in the first place.

04-01-2007, 01:12	#3
Slim Vision Forum Member Join Date: Oct 2003 Location: The Universe Posts: 27	Excellent. Thank you for responding.

04-01-2007, 12:37	#4
RJ-Smith Forum Member Join Date: Oct 2002 Location: Scotland Posts: 70	Interesting question. My understanding is that scaling (making the picture bigger) and upscaling (deriving the missing pixels) are two different things. If I'm correct, surely we're talking scaling and not upscaling here? I've just bought a new Surround Sound Receiver and it also has upscaling capabilities to 1080p. I was hoping to use it to upscale my DVD player (576p) and my Xbox 360/HD-DVD Player (1080i) to 1080p.

04-01-2007, 13:15	#5
Slim Vision Forum Member Join Date: Oct 2003 Location: The Universe Posts: 27	Well I don't know. I may know some of the technical jargon as far as the whole resolution thing goes but certainly not all of it. Scaling... Upscaling... Its was all one and the same thing to me until you mentioned that.

04-01-2007, 13:48	#6
RJ-Smith Forum Member Join Date: Oct 2002 Location: Scotland Posts: 70	Can't claim to understand it all myself so I could be wrong. Just the way I understood it.

04-01-2007, 14:55	#7
jer1956 Forum Member Join Date: Oct 2005 Posts: 1,106	Quote: Originally Posted by Slim Vision I'm going to get a 1080p tv. From what I've read 720p upscales to 1080p okay, however I do have a one or two sources that output in 576p. I know upscaling a 576p picture to 1080p won't make it look any better, but I just wondered if it will actually look any worse than if the 576p picture was displayed on a native screen? There is no absolute answer, it depends upon the quality of the equipment, and the quality of the signal. HD dosn't just mean more lines, it really does mean more "definition". It will show you detail in SD signals you never saw before, but will also show how bad the worse broadcasts are as well.

05-01-2007, 09:42	#8
The_KELRaTH Forum Member Join Date: Mar 2003 Posts: 8	Upscaling is a mathematical formula to increase the resolution so that the original source material will have the same density as the new higher resolution. Sony have been using this technique even with their top end CRT TV's to improve image quality ie KV32/36DX200 series. If the brand just quotes upscaling to HDMI then most likely this is just to 720p not 1080p.

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Will a 576p picture upscaled to a 1080p screen look worse than if it was native 576p?