Does anyone know how that "green wall" works.

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Does anyone know how that "green wall" works.

Postby joyceajm » Thu Mar 05, 2009 6:07 pm

Does anyone know how the green wall works? I don't think that the weather maps are really behind them.

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Re: Does anyone know how that "green wall" works.

Postby joyceajm » Sat Nov 21, 2009 10:25 am

Wow! I'm surprised that no one knows this answer....asked the question a while ago too. I think that I've seen other meteorologist using monitors now. I personally don't care for that. I guess it's the new technology thing to do.

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Re: Does anyone know how that "green wall" works.

Postby nennie0 » Sat Dec 12, 2009 12:56 pm

The green or blue wall is where the weather map is superimposed. The computer puts the map over anything of those colors.

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Re: Does anyone know how that "green wall" works.

Postby Ninjaguy » Sun Dec 13, 2009 8:58 pm

Personally I think that the green wall thing will go by the wayside. It seems to me that the new technology is the wall in the background like the cable stations use. CNN, Fox news, and the weather channel use those.
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Re: Does anyone know how that "green wall" works.

Postby Martin » Wed Dec 30, 2009 12:49 am

ninjaguy89 wrote:Personally I think that the green wall thing will go by the wayside. It seems to me that the new technology is the wall in the background like the cable stations use. CNN, Fox news, and the weather channel use those.

Using a chroma key has its advantages. You might notice the maps on The Weather Channel look quite dark and faded sometimes as opposed to the green screen. Must make it loads easier though for the OCMs

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Re: Does anyone know how that "green wall" works.

Postby Alan_G » Fri Jun 04, 2010 1:49 am

In case the original poster still wants an explanation of how "the green wall" (more properly "chroma key") works, the Chroma Key article on Wikipedia should be helpful. For weather sets in analog TV studios, the key wall was usually painted a color called Dark Blue Aquamarine.


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Re: Does anyone know how that "green wall" works.

Postby Kit Kat » Sun Jun 06, 2010 5:52 pm

Hi Alan,
It sounds like you are an engineer or one of those smart tech guys. Did you work with the green walls in some way?

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Re: Does anyone know how that "green wall" works.

Postby Caribbean Traveler » Thu Jun 10, 2010 7:04 am

Kit Kat wrote:Hi Alan,
It sounds like you are an engineer or one of those smart tech guys. Did you work with the green walls in some way?


Alan was one of the geniuses who started the weather channel. He knows about all of the technical stuff.
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Re: Does anyone know how that "green wall" works.

Postby Alan_G » Fri Jun 11, 2010 12:23 am

Hi, Kit Kat. Not withstanding Rich's kind words, a lot of what I know about the television engineering aspect of the business I learned from the TV engineers at The Weather Channel.

My education was in electrical engineering, but prior to TWC my work and my passion was the analysis and design of computer based systems. Most of the innovative technical work at TWC was at the intersection of television technology and computer technology. I also had been fascinated by TV technology since my early teen years. (I worked in a TV repair shop the summer between my junior year and senior year in highschool.) So I learned the TV stuff on the job from some very sharp people.

I was never directly involved with the green wall. But I was involved with digital keying in the design of The Weather STAR which had to be able to "key" local weather information in the form of text (and later, weather icons) over TWC video to show local sensor / observation data at the bottom of the screen during network programming.


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Re: Does anyone know how that "green wall" works.

Postby Caribbean Traveler » Tue Jun 15, 2010 2:49 am

I believe Alan was one the people directly responsible for the weather channel's success. If it wasn't for his contibutions, in technology, TWC well may never have made it.
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Re: Does anyone know how that "green wall" works.

Postby Kit Kat » Sun Jul 04, 2010 10:20 pm

I was watching the movie even almighty and they used a huge blue wall to film the movie!

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Re: Does anyone know how that "green wall" works.

Postby Martin » Sun Jul 04, 2010 11:58 pm

Alan_G wrote:Hi, Kit Kat. Not withstanding Rich's kind words, a lot of what I know about the television engineering aspect of the business I learned from the TV engineers at The Weather Channel.

My education was in electrical engineering, but prior to TWC my work and my passion was the analysis and design of computer based systems. Most of the innovative technical work at TWC was at the intersection of television technology and computer technology. I also had been fascinated by TV technology since my early teen years. (I worked in a TV repair shop the summer between my junior year and senior year in highschool.) So I learned the TV stuff on the job from some very sharp people.

I was never directly involved with the green wall. But I was involved with digital keying in the design of The Weather STAR which had to be able to "key" local weather information in the form of text (and later, weather icons) over TWC video to show local sensor / observation data at the bottom of the screen during network programming.


Alan G

Wow so you were part of the group that worked on the 4000 and lower models? I am still amazed by how you all did that considering the times. Its really amazing!! I picked up an old 4000 for fun to see the design. Quite remarkable!

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Re: Does anyone know how that "green wall" works.

Postby Caribbean Traveler » Mon Jul 05, 2010 7:17 am

Martin wrote:Wow so you were part of the group that worked on the 4000 and lower models? I am still amazed by how you all did that considering the times. Its really amazing!! I picked up an old 4000 for fun to see the design. Quite remarkable!



Local pawn shop? ;allright:
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Re: Does anyone know how that "green wall" works.

Postby Florida Beach Gal » Thu Jul 08, 2010 1:19 pm

I suppose that you can find just about anything on ebay!


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