KVCDs are Really Blurry? - Page 2

Bchteam · #21 06-04-2003, 04:50 PM

@ Rendalunit

Quote:

Hi heller,

Using Lanczos, the picture will look slightly sharper, but will also decrease compression and show slightly more artifacts around objects.

-kwag

That's what Kwag wrote...

jorel · #22 06-04-2003, 04:54 PM

friendalunit,

i post (and Kwag too) somewhere here that lanczos give strange artefacts
in the lines...seems staircases in thin lines.
i see it in 352x240..with more size got less staircases.

i use it before in 3 full movies and got big simbilances on tv29.

(sorry my english)

Bchteam · #23 06-04-2003, 05:19 PM

I made 2 Samples one with:

Code:

Asharp(2,4)

and one with

Code:

Unfilter(10,10) 
asharp(1.25,4,1,hqbf=true)

With the First one(Only Asharp) I got a CQ of 50,72, at a resolution of 704x480.

With the second one (Asharp+Unfilter) I got a CQ of 51,2, at a resolution of 704x480, as well.

The First Script (Asharp only) is way sharper...The second is also good but not as good as the First one.

So the winner (for now) is :

Code:

Asharp(2,4)

rendalunit · #24 06-04-2003, 05:58 PM

Quote:

Originally Posted by Bchteam

@ Rendalunit

Quote:
Hi heller,

Using Lanczos, the picture will look slightly sharper, but will also decrease compression and show slightly more artifacts around objects.

-kwag

That's what Kwag wrote...

aahh, i get it now

thnx,
ren

vico1 · #25 06-04-2003, 08:01 PM

Quote:

Originally Posted by Bchteam

So the winner (for now) is :

Code:

Asharp(2,4)

@ Bchteam,
Was the "Asharp(2,4)" you applied, only used on a very clean source?? (DVD?)
I would imagine using that much sharpening, on anything other than
a pretty clean source, would also bring out a lot of artifacts.

************************************
The Devil.....is always.....in the Details!

Bchteam · #26 06-05-2003, 12:46 AM

@ Vico

Yes, the Source is very clean

Jellygoose · #27 06-05-2003, 01:45 AM

Well this line

Code:

Unfilter(10,10) 
asharp(1.25,4,1,hqbf=true)

is optimized, for noise reduction too... for me it is the best compromise between sharpness and the covering of artifacts around objects...
aSharp(2,4) gives me a very sharp picture, however noise seems to be enhanced and becomes clearly more visible around Objects, especially in the background...
that's at least my observation!