Noise profile : Telling what's missing

jpsdr · Post by **jpsdr** » Tue Apr 28, 2009 7:54 am

Hello.
Trying to build a noise profile, i realise something wich realy
help me : Telling me what is missing.
I'm actualy stuck at 68%, but with all the value (bar graph R/G/B)
aleady found. I've already on 2 other videos been able to get a 100%
profile, wich result on a very small file by the way (around 4k instead
of standard 17k), is it normal ?

So, personnaly, i'm very interested in something, even a little tool,
even if it's only a commande line/DOS program without windows interface,
wich can tell me what's missing to achieve 100%.
Something like displaying 3 two dimensional array like this :

R color :
Very Low Freq. Low Freq. ...etc
Color range 1 Ok Ok
Color range 2 NOk Ok
etc...

B color :
etc...

Note : Of course, i assume you can't have an Ok at VLF, and NOk
at LF (for the same color range)...

As, i'm suspecting that the fact i'm not able to get 100%, is because
i'm missing some very low frequency samples (and maybe low),
on some color data, but, i don't know wich one, so i don't konw what
to search !!!
I've also noticed that the 2 extreme are very hard to get, you always
get clipping problems...

Post by **NVTeam** » Tue Apr 28, 2009 10:24 am

If you e-mail me the profile I will tell you what limits its quiality. In most case, this is directly clear from the noise equalizer and profile viewer.

Vlad

jpsdr · Post by **jpsdr** » Tue Apr 28, 2009 12:31 pm

Mail sent to "support".
From the noise equalizer, indeed, when there still blank, it's clear.
But, when there is no blank part left, i don't know how to search,
and what.

If, with what i've send to you, from profile viewer, you can explain
to me how to interpret it to find out what color/palette is missing,
except... if everything is explain in detail in the documentation of
how interpret the profile viewer, to find out precisely what's missing
to achieve 100%, when you've already get all the color in the
noise equalizer. In that case, i'll look at the documentation.
What's bugging me is the 84% uniformity Y...
I've never selected/use area with any king of warning
(clipping/non uniform).

Post by **NVTeam** » Tue Apr 28, 2009 12:49 pm

Thank you for the profile, I replied by e-mail to that e-mail.

Vlad

Lugarimo · Post by **Lugarimo** » Fri May 01, 2009 10:08 am

If you would be so kind to post the correspondance here, please do, I've been meaning to ask a similar question. I personally never achieved 100% and didn't even know that was possible, the highest I got was around 89% and didn't know what else to select as there was nothing but noise.

Post by **NVTeam** » Fri May 01, 2009 10:22 am

Please open the profile viewer and check the values there. Usually it is clear what is less than perfect in the profile.

Vlad

jpsdr · Post by **jpsdr** » Sat May 02, 2009 7:56 am

Hello.

In the profile viewer, what exactly means
Uniformity of Y : 84% ?

Post by **NVTeam** » Sat May 02, 2009 8:01 am

That means the noise sample (the area used for main noise analysis) is not entirely uniform in the Y channel. However, 84% is good enough and I wouldn't try to increase it to 100% just for the sake of having it maxed. The final filtration results would most likely not change much.

Vlad