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Posted by Gareth R Halfacree on 12/17/05 10:00
Keeper of the Purple Twilight wrote:
> On 2005-12-16 03:08:17 -0600, Gareth Halfacree <usenet@halfacree.co.uk>
> said:
>> No - any SD (Standard Definition) picture upscaled to HD (High
>> Definition) will look poorer than if it had been left alone.
>
> Why?
You're a one for single-word posts, aren't you?
Because upscaling has to invent pixels through a method known as
'interpolation'. It says "This pixel is black, and this pixel is black,
so I shall invent a pixel between them that is black and it will look
good." It also says "This pixel is black, and this pixel is white, so I
shall invent a pixel between them that is grey and it will look rubbish,
but I know not what else to do."
Upscaling within a flat-panel TV is unavoidable - it has to be done. It
does, however, give everything a soft, blurry quality that I personally
find distasteful. If you think DVDs look too sharp, and would prefer
them looking softer, you may enjoy the softening effect of
interpolation. As I have mentioned before, the scaling hardware within
the TV, which is designed purely to scale images *for that panel*, will
always give better results than using an external scaler (i.e. within a
DVD player). In other words, the softening and artifacting that an
upscaling system shows will be minimised by using only the scalers built
into the panel.
Now, I'd prefer to watch my SD material on an SD screen without scaling,
as that gives me the best quality. Likewise I'd prefer to watch my HD
material on a HD screen without scaling, as that also gives me the best
quality. You may feel differently on the matter: a speaker that gives
stronger bass may be of preference to a classical fan but shunned by
someone who prefers a capella.
Once again, read my original posts on the matter.
--
Gareth Halfacree http://gareth.halfacree.co.uk
"If Ace Books ever came out with an edition of The Bible, both books
would be edited down to 40,000 words, and they'd be renamed "Master of
Chaos" and "The Thing With Three Souls." - Terry Carr
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