|
|
Posted by Martin Heffels on 09/29/60 11:38
On Sat, 28 Jan 2006 21:11:48 -0500, "Smarty" <nobody@nobody.com> wrote:
>I fail to understand how uprezzing / clever mathematics can increase the
>resolution of a lower data rate / lower resolution signal. Doubling the
>number of lines doesn't truly "resolve" any more detail, and the inherent
>resolution of the originally sampled signal at the sampling rate it was
>captured is the highest "resolution" achievable. Schemes developed by Yves
>Faroudja and others (like DCD) can reduce jaggies or other artifacts, but
>this is not in any way an increase in resolution.
Companies like Du-Art in the US have developed proprietary software which
they use to double the vertical resolution (I should have said that), to
make a SD-based image look better when blown-up to 35mm. What it does is
that it recreates the intermediate lines, based on the pixelsof the lines
next to it. Of course this is not really going back to what it was (which
is impossible after throwing away a lot of the information), but a pretty
good approach, and makes a blow-up to 35mm look much better (from 500+
lines to 1000+ lines)
cheers
-martin-
--
Never be afraid to try something new.
Remember that a lone amateur built the Ark.
A large group of professionals built the Titanic.
Navigation:
[Reply to this message]
|