[MPlayer-cvslog] CVS: main/DOCS/tech swscaler_methods.txt, 1.1, 1.2

[Michael Niedermayer]

Hi

On Tue, Aug 23, 2005 at 12:40:05PM -0400, The Wanderer wrote:
[...]
> There are also a number of other typographical/etc. errors in that file
> (if I'd realized that there were any files left with that many problems,
> I'd have gone hunting them down long since), and I've got a fix for most
> of them handy - but there's one thing I'm not certain about. Further up
> in the file, in the section on types of artifacting, the "blur"
> description line reads: "loss of detail / high frequency". As best I
> understand it, this either means that one of the possible things which
> is considered to be a "blur" artifact is "high frequency" - and that
> this is bad (and I don't know how high frequency can automatically be
> considered bad) - or that high frequency *something* is lost.. but
> neither of these makes much sense to me, and I don't know what was
> intended. Since I don't understand what was meant here, it probably
> needs to be rephrased; does anyone know what was actually meant?

yes, its supposed to mean  "loss of detail / loss of high frequency"

blur == reduction of high frequency components, while sharpening
amplifies them

-- 
Michael