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Sci.Electronics.Basics -> Video questions about spatial-aliasing, Hz measurements, and analog vs. digital

There are 7 messages in this thread.
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Author: Green Xenon [Radium]
Date: 18:43 09-05-08


Hi:

Some video websites say that spatial aliasing causes jaggies, other say
it causes the Moire effect, still others say it causes pixelation. Who
is right? What does spatial aliasing look like?

Also, which video specs are measured in "Hz" -- regardless of whether
the video is analog or digital? I believe "frame rate" is one of them.

In digital video, what specs are measured in Hz?

What specs are measured in Hz in analog video?


Thanks,

Radium

Author: Tom Biasi
Date: 20:20 09-05-08


"Green Xenon [Radium]" <glucegen1@excite.com> wrote in message
news:4824d372$0$30183$4c368faf@roadrunner.com...
> Hi:
>
> Some video websites say that spatial aliasing causes jaggies, other say
> it causes the Moire effect, still others say it causes pixelation. Who
> is right? What does spatial aliasing look like?
>
> Also, which video specs are measured in "Hz" -- regardless of whether the

> video is analog or digital? I believe "frame rate" is one of them.
>
> In digital video, what specs are measured in Hz?
>
> What specs are measured in Hz in analog video?
>
>
> Thanks,
>
> Radium

Radium,
Why do you persist in these ventures?
It would be difficult for one to research the subject as you did and not
answer their own question.

I removed Xposts
Tom



Author: Green Xenon [Radium]
Date: 23:31 09-05-08

Tom Biasi wrote:


> Radium,
> Why do you persist in these ventures?
> It would be difficult for one to research the subject as you did and not
> answer their own question.


Well, I still haven't found the answers.

Author: Ken Maltby
Date: 01:58 10-05-08


"Green Xenon [Radium]" <glucegen1@excite.com> wrote in message
news:4824d372$0$30183$4c368faf@roadrunner.com...
> Hi:
>
> Some video websites say that spatial aliasing causes jaggies, other say
> it causes the Moire effect, still others say it causes pixelation. Who
> is right? What does spatial aliasing look like?
>
> Also, which video specs are measured in "Hz" -- regardless of whether the

> video is analog or digital? I believe "frame rate" is one of them.
>
> In digital video, what specs are measured in Hz?
>
> What specs are measured in Hz in analog video?
>
>
> Thanks,
>
> Radium

Do you know how bad you have to be to be kicked off
GoogleGroups?

Please don't encourage or feed "Radium".

Luck;
Ken



Author: Sjouke Burry
Date: 11:48 10-05-08

Green Xenon [Radium] wrote:
> Tom Biasi wrote:
>
>
>> Radium,
>> Why do you persist in these ventures?
>> It would be difficult for one to research the subject as you did and not
>> answer their own question.
>
>
> Well, I still haven't found the answers.
And you wont get them by trolling.

Author: Green Xenon [Radium]
Date: 02:21 11-05-08

Tom Biasi wrote:


> Why do you persist in these ventures?


I would like to know the artifact[s] spatial-aliasing causes. Does it
cause jaggies, Moire, or pixelation? Or all 3?

Author: John Fields
Date: 08:23 11-05-08

On Sat, 10 May 2008 23:21:46 -0700, "Green Xenon [Radium]"
<glucegen1@excite.com> wrote:

>Tom Biasi wrote:
>
>
>> Why do you persist in these ventures?
>
>
>I would like to know the artifact[s] spatial-aliasing causes. Does it
>cause jaggies, Moire, or pixelation? Or all 3?

---
Google "spatial aliasing", troll asshole.

JF

1


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