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Aerial Photography and Video > Observer camera size
 
 
Dave Barbera
Heliman
Location: Hubbardston, MA U.S.A.

>It doesn’t matter what card you use for importing/exporting video.
>It does make a difference

I believe Angelos is talking strictly about a Firewire (IEEE1394) interface. It doesn't matter what card you buy to implement that interface, it would still need to send/receive the same data. It would be the same as buying a card that provides a parallel interface, would you expect to get different data to your printer from different brand cards that was implemented differently?

>Some cards assist in video manipulation to do things faster but they don’t do anything that the PC >can’t do in software.
>Oh my, you have so much to learn.

That is pretty useless, say why you think the statement is incorrect.
12-01-2003 03:14 AM
 
 
Angelos
Key Veteran
Location: nr Oxford, OX11, UK

Yes, as Dave said I am talking about firewire. Firewire transfers data and therefore there is not quality loss during the transfer. After editing the video I would store it on a DVD but if I need an analogues copy then I would send it back to the camera with firewire which instantly produces an analogue video output.

In any case, my argument is not there. I simply say that a dedicated card that assists in video editing or even one of the professional real-time video editing stations don’t do anything a PC can’t do. These cards/stations have special processors with a powerful instruction set for digital signal processing. They can do things faster (even real-time) but they all treat video as data that has to be manipulated to produce the result. The same algorithm can run on your PC and can produce the same result. It will just take longer.

Quote 
Oh my, you have so much to learn.

aircombat, so here is what I know. Why don’t you tell us now what you know. How do these cards work that magically restore the pixels you cropped during rotation without quality loss.



John O, for information only... there is actually a camera that was developed at the place where I work (Rutherford Appleton Laboratory). It is not in my department so I don’t know the exact details. I am in the electron accelerator controls group. Anyway, I saw the camera in a monthly newsletter which I think it is still sitting on my desk. I’ll scan the article and let you see it. This is still a prototype. They claim it is portable and can be used to scan passengers at the airport to see if they have guns on then. The picture is more like an infrared scan, like the one at the old Predator movie. The camera works using low power Terahertz frequencies. It is therefore more like a radar. In theory it could penetrate a wall.
12-01-2003 08:40 AM
 
 
Angelos
Key Veteran
Location: nr Oxford, OX11, UK

I forgot to take the newsletter about the terahertz camera with me but luckily I found the thing on the web. http://www.cclrc.ac.uk/Activities/P...ortal_aut03.pdf
Look on page 6. Some info also here: http://www.dailytelegraph.co.uk/new.../06/ixhome.html
12-01-2003 05:44 PM
 
 
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Aerial Photography and Video > Observer camera size
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