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Posted by Joshua Zyber on 01/17/07 00:19
"M.I.5" <no.one@no.where.NO_SPAM.co.uk> wrote in message
news:45ace6f3$1_1@glkas0286.greenlnk.net...
>>> ... or, of course, Joshua Zyber, doesn't know what he's talking
>>> about. More likely since, I doubt that he has taken the trouble (or
>>> has the ability) to actually see for himself.
>>
>> The trouble to do what? To watch DVD content on a higher resolution
>> screen? I've been watching content on an HD projection screen likely
>> larger than your entire body for years.
>
> But did you compare it with a comparable technology regular resolution
> 720 x 576 projection system? If not, you are not in a position to
> contribute.
As a matter of fact, I have. And you're way off base in your
assumptions.
Upconversion of DVD content to a higher resolution does offer some
benefits, in that it allows you to magnify the image to a larger size
screen without exposing the DVD's meager pixel structure. But the extra
pixels you're filling out on the display are entirely interpolated. They
don't actually exist in the source, and are not true picture detail.
They're just filler that smooths out the empty gaps between active
picture content. To say that a 720x576 DVD requires a 1440x1152 screen
to properly resolve it is a shocking misunderstanding of how digital
resolution and scaling work. That you insist on this yet also believe
that progressive scan offers no benefit over interlace is borderline
insane.
Where did you even come up with this ridiculous 1:2 ratio between DVD
resolution and display pixels? Do you not realize that DVD pixels aren't
square? A 720x576 DVD image directly 1:2 mapped to a 1440x1152 would
give you a picture in the wrong shape!
And puzzle this over, smarty pants: If a meager DVD really requires a
1440x1152 display to resolve it, wouldn't that also mean that a true
High Definition image would require 3840x2160 pixels? So does that mean
that all of the HDTVs out there aren't really capable of displaying HD
content at all? And by the same logic, an HD signal on a current "HDTV"
screen would show no improvement over a DVD, which is already barely
taking advantage of the screen?
Ludicrous. Simply ludicrous.
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