On Sun, 4 Oct 2020 22:52:19 -0400
"Mark Filipak (ffmpeg)" wrote:
> Correction:
> "if your sampling frequency exceeds Nyquist" was "if your sampling
> frequency exceeds Nyquist/2" (which was an inadvertent mistake).
> Sorry.
>
>
> On 10/04/2020 09:44 PM, Anatoly wrote:
> > On Sun, 4 Oct 2020 10:
Correction:
"if your sampling frequency exceeds Nyquist" was "if your sampling frequency exceeds Nyquist/2"
(which was an inadvertent mistake). Sorry.
On 10/04/2020 09:44 PM, Anatoly wrote:
On Sun, 4 Oct 2020 10:37:41 -0400
-snip-
Are you watched "Part 2" ?
https://www.youtube.com/watch?v=h
On 10/04/2020 09:44 PM, Anatoly wrote:
On Sun, 4 Oct 2020 10:37:41 -0400
-snip-
Are you watched "Part 2" ?
https://www.youtube.com/watch?v=ht4Mv2wIRyQ
I don't think spacial image resolution is
related to frequency at all.
Then watch mentioned above video at 8:07
He didnt explain this, but th
On Sun, 4 Oct 2020 10:37:41 -0400
"Mark Filipak (ffmpeg)" wrote:
> On 10/04/2020 03:52 AM, Rodney Baker wrote:
> > On Sunday, 4 October 2020 7:13:20 ACDT Mark Filipak (ffmpeg)
> > wrote:
> >> On 10/03/2020 02:05 PM, Anatoly wrote:
> >>> On Sat, 3 Oct 2020 11:05:03 -0400
> >>
> >> -snip-
> >
On 10/04/2020 03:52 AM, Rodney Baker wrote:
On Sunday, 4 October 2020 7:13:20 ACDT Mark Filipak (ffmpeg) wrote:
On 10/03/2020 02:05 PM, Anatoly wrote:
On Sat, 3 Oct 2020 11:05:03 -0400
-snip-
You should learn than what spectrum is.
Oh, please. Be easy with me. I'm just a simple electrical
On Sat, 3 Oct 2020 21:22:38 -0400
"Mark Filipak (ffmpeg)" wrote:
> Here's what I visualize:
> Imagine a heat map -- one of those colorful images ...reds and
> yellows and greens and blues. Then, imagine a screen in front of it,
> between you and the heat map. The screen is the final samples (ex:
On Sunday, 4 October 2020 7:13:20 ACDT Mark Filipak (ffmpeg) wrote:
> On 10/03/2020 02:05 PM, Anatoly wrote:
> > On Sat, 3 Oct 2020 11:05:03 -0400
>
> -snip-
>
> > You should learn than what spectrum is.
>
> Oh, please. Be easy with me. I'm just a simple electrical engineer.
>
> > And how any c
On 10/03/2020 05:12 PM, Michael Koch wrote:
Am 03.10.2020 um 22:43 schrieb Mark Filipak (ffmpeg):
On 10/03/2020 02:05 PM, Anatoly wrote:
On Sat, 3 Oct 2020 11:05:03 -0400
-snip-
You should learn than what spectrum is.
Oh, please. Be easy with me. I'm just a simple electrical engineer.
And
On 10/03/2020 05:12 PM, Michael Koch wrote:
Am 03.10.2020 um 22:43 schrieb Mark Filipak (ffmpeg):
On 10/03/2020 02:05 PM, Anatoly wrote:
On Sat, 3 Oct 2020 11:05:03 -0400
-snip-
You should learn than what spectrum is.
Oh, please. Be easy with me. I'm just a simple electrical engineer.
And
Am 03.10.2020 um 22:43 schrieb Mark Filipak (ffmpeg):
On 10/03/2020 02:05 PM, Anatoly wrote:
On Sat, 3 Oct 2020 11:05:03 -0400
-snip-
You should learn than what spectrum is.
Oh, please. Be easy with me. I'm just a simple electrical engineer.
And how any complex waveform
(with it's "informa
On 10/03/2020 02:05 PM, Anatoly wrote:
On Sat, 3 Oct 2020 11:05:03 -0400
-snip-
You should learn than what spectrum is.
Oh, please. Be easy with me. I'm just a simple electrical engineer.
And how any complex waveform
(with it's "information density") may be represented as a sum of many
simp
On Sat, 3 Oct 2020 11:05:03 -0400
"Mark Filipak (ffmpeg)" wrote:
> On 10/03/2020 06:41 AM, Anatoly wrote:
> > On Fri, 2 Oct 2020 20:47:57 -0400
> > "Mark Filipak (ffmpeg)" wrote:
> -snip-
> >> By the way, I've given up trying to make an illustration of
> >> 2-dimensional Nyquist sampling. It's
On 10/03/2020 06:41 AM, Anatoly wrote:
On Fri, 2 Oct 2020 20:47:57 -0400
"Mark Filipak (ffmpeg)" wrote:
-snip-
By the way, I've given up trying to make an illustration of
2-dimensional Nyquist sampling. It's too hard.
I think is's easy. Just slale dows to every one dimesion to tart from.
Lets
On Fri, 2 Oct 2020 20:47:57 -0400
"Mark Filipak (ffmpeg)" wrote:
>In your scenario, your eyes do see 640x480. Your brain does see
>640x480. But in order to cleanly 'see' a black-white edge inside those
>640x480 dots, the 640x480 dots need to be made from 1280x960 samples
>within the camera. If th
On 10/02/2020 02:15 PM, Eduardo Alarcón wrote:
El vie., 2 oct. 2020 a las 7:34, Anatoly ()
escribió:
On Thu, 1 Oct 2020 20:25:30 -0400
"Mark Filipak (ffmpeg)" wrote:
When sampling an analog voltage, resolution is the ability to resolve
voltage value within a certain period of time (i.e. withi
On 10/02/2020 06:34 AM, Anatoly wrote:
On Thu, 1 Oct 2020 20:25:30 -0400
"Mark Filipak (ffmpeg)" wrote:
On 10/01/2020 07:43 PM, Anatoly wrote:
On Wed, 30 Sep 2020 19:21:59 -0400
"Mark Filipak (ffmpeg)" wrote:
Nyquist [adjective]: 1, Reference to the Nyquist-Shannon sampling
theorem.
El vie., 2 oct. 2020 a las 7:34, Anatoly ()
escribió:
> On Thu, 1 Oct 2020 20:25:30 -0400
> "Mark Filipak (ffmpeg)" wrote:
>
> > On 10/01/2020 07:43 PM, Anatoly wrote:
> > > On Wed, 30 Sep 2020 19:21:59 -0400
> > > "Mark Filipak (ffmpeg)" wrote:
> > >
> > >> Nyquist [adjective]: 1, Reference to
On Thu, 1 Oct 2020 20:25:30 -0400
"Mark Filipak (ffmpeg)" wrote:
> On 10/01/2020 07:43 PM, Anatoly wrote:
> > On Wed, 30 Sep 2020 19:21:59 -0400
> > "Mark Filipak (ffmpeg)" wrote:
> >
> >> Nyquist [adjective]: 1, Reference to the Nyquist-Shannon sampling
> >> theorem. 2, The principle [1]
On 10/01/2020 07:43 PM, Anatoly wrote:
On Wed, 30 Sep 2020 19:21:59 -0400
"Mark Filipak (ffmpeg)" wrote:
Nyquist [adjective]: 1, Reference to the Nyquist-Shannon sampling
theorem. 2, The principle [1] that, to most faithfully reproduce an
image at a given digital display's resolution,
On Wed, 30 Sep 2020 19:21:59 -0400
"Mark Filipak (ffmpeg)" wrote:
> Nyquist [adjective]: 1, Reference to the Nyquist-Shannon sampling
>theorem. 2, The principle [1] that, to most faithfully reproduce an
>image at a given digital display's resolution, the samples must be
>made at or ab
On 10/01/2020 12:16 PM, Greg Oliver wrote:
On Wed, Sep 30, 2020 at 6:25 PM Mark Filipak (ffmpeg)
wrote:
-snip-
Mark,
Normally I would absolutely defend your queries as they are technical and
lower level, but I would almost have to side with Bouke from post
(
bwdif filter question
)
You are t
On Wed, Sep 30, 2020 at 6:25 PM Mark Filipak (ffmpeg)
wrote:
> Nyquist [adjective]: 1, Reference to the Nyquist–Shannon sampling
>theorem. 2, The principle [1] that, to most faithfully reproduce an
>image at a given digital display's resolution, the samples must be
>made at or above t
El jue., 1 oct. 2020 a las 12:55, Mark Filipak (ffmpeg) ()
escribió:
> On 10/01/2020 11:20 AM, Eduardo Alarcón wrote:
> > El jue., 1 oct. 2020 a las 12:09, Mark Filipak (ffmpeg) (<
> markfili...@bog.us>)
> > escribió:
> >
> >> On 10/01/2020 10:38 AM, Eduardo Alarcón wrote:
> -snip-
> >> Can you su
On 10/01/2020 11:20 AM, Eduardo Alarcón wrote:
El jue., 1 oct. 2020 a las 12:09, Mark Filipak (ffmpeg) ()
escribió:
On 10/01/2020 10:38 AM, Eduardo Alarcón wrote:
-snip-
Can you suggest better wording? I'd like to see it.
Me too, this is not my native language so i can not suggest a better
El jue., 1 oct. 2020 a las 12:09, Mark Filipak (ffmpeg) ()
escribió:
> On 10/01/2020 10:38 AM, Eduardo Alarcón wrote:
> > Mostly the noun/adjective part, the part [1] about SD media and
> mastering,
> > seems to be anecdotal information more than a definition of what is the
> > Nyquist principle,
On 10/01/2020 10:38 AM, Eduardo Alarcón wrote:
Mostly the noun/adjective part, the part [1] about SD media and mastering,
seems to be anecdotal information more than a definition of what is the
Nyquist principle, you say that the images are undersampled, but what does
it mean? what is the impact,
Mostly the noun/adjective part, the part [1] about SD media and mastering,
seems to be anecdotal information more than a definition of what is the
Nyquist principle, you say that the images are undersampled, but what does
it mean? what is the impact, the images look blurry?, may be you defined
"und
Most relevant to input sampling and not so relevant for displays unless higher
spatial frequencies are actually present in data
Not to mention most cameras have optical low pass filters
In other words just beachside a 4k camera was used does not mean it can display
alias free in 4k display
So ple
On 10/01/2020 01:20 AM, Eduardo Alarcón wrote:
Nyquist is a noun, not an adjective, for Harry Nyquist. ...
Hi Eduardo, Thanks.
Well, technically, a noun used as an adjective: "Nyquist sampling", makes it an adjective, but no
matter.
What if I narrow the scope to solely the sampling theory?
Nyquist is a noun, not an adjective, for Harry Nyquist. The Nyquist–Shannon
sampling theorem is applicable to analog to digital conversion of signals
(continuous to discrete), images are a type of signal.
El mié., 30 sept. 2020 a las 20:25, Mark Filipak (ffmpeg) (<
markfili...@bog.us>) escribió:
Nyquist [adjective]: 1, Reference to the Nyquist–Shannon sampling
theorem. 2, The principle [1] that, to most faithfully reproduce an
image at a given digital display's resolution, the samples must be
made at or above twice the display's resolution, both horizontally &
vertically [2].
[1
31 matches
Mail list logo
