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		<title><![CDATA[Forums - Bricks in Motion - Green Screen Tip]]></title>
		<link>https://bricksinmotion.com/forums/topic/4299/green-screen-tip/</link>
		<description><![CDATA[The most recent posts in Green Screen Tip.]]></description>
		<lastBuildDate>Mon, 07 Dec 2009 16:27:51 +0000</lastBuildDate>
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			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/99253/#p99253</link>
			<description><![CDATA[@martinprince:
you are absolutely right .. the distance should be maximated. But I think Lego Bricks are so colourful, that it's possible that the corners in your tube are the setcolours.]]></description>
			<author><![CDATA[dummy@example.com (Piet)]]></author>
			<pubDate>Mon, 07 Dec 2009 16:27:51 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/99253/#p99253</guid>
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			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/98552/#p98552</link>
			<description><![CDATA[[quote=Piet]I think it is not the most importend that you use Red (255,0,0) Green(0,255,0) or Blue (0,0,255) it is more importand, that the colour of the screen in an 3D colour space hast the largest distance to averange colour of the set. [/quote]

Unfortunately this statement contradicts itself. In the colour space cube X= Red Y= Green Z= Blue. The colour as you have said will be one that is the furthest away from the foreground colours. This will occur at one of the corners of the cube ie Red (255,0,0) Green(0,255,0) or Blue (0,0,255). Chosing a background colour that lies further toward the centre of the colour space cube can only result in a smaller colour difference. 

In theory one of the other corners could be better (pure cyan pure yellow etc. ) but this is unlikely. Pure yellow background RGB(255,255,0) would mean that all of your foreground colours would need to be shades of blue. (ie the opposite corner of the colour cube). 

If you could combine the histograms into a 3D space image you would see that the foreground object colours would appear as a "cloud" in the centre of the colour space cube. Often it is stretched along the diagonal from (0,0,0) to (255,255,255). This is because of shading of the forground colours from dark to light across the objects. You can imagine that once again the best colour for a background a point furthest away from this cloud and is at the cube exreme corners ie Red (255,0,0) Green(0,255,0) or Blue (0,0,255)]]></description>
			<author><![CDATA[dummy@example.com (martinprice2004)]]></author>
			<pubDate>Fri, 04 Dec 2009 13:29:20 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/98552/#p98552</guid>
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			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/98539/#p98539</link>
			<description><![CDATA[I agree to Leonardo812, it depends on the colour of the setting! So why do not take some test pictures befor taking the whole shot? If I am not sure, I do it.
I think it is not the most importend that you use Red (255,0,0) Green(0,255,0) or Blue (0,0,255) it is more importand, that the colour of the screen in an 3D colour space hast the largest distance to averange colour of the set. The easiest way to match that is to take a pic with a black screen and have a look on the histogram of all 3 channels .. combining the holes in each histogram is the best colour. Now there is only one question .. do I have these sort of screen?

[img]http://www.brickshelf.com/gallery/Peiler/Making-Of/minifig_kran_20.jpg[/img]
I nearly always try .. one of these 4 colours would work .. Yes even yellow does good work .. sometimes ;)]]></description>
			<author><![CDATA[dummy@example.com (Piet)]]></author>
			<pubDate>Fri, 04 Dec 2009 10:31:11 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/98539/#p98539</guid>
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			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/98406/#p98406</link>
			<description><![CDATA[The best colour background for chroma keying depends on the colour of your foreground objects.

Try to pick a colour that doesn't occur in the foreground. 

The best colour is then either
purest Red ie RGB(255,0,0)                 Redscreening
purest Green ie RGB(0,255,0)              Greenscreening
purest Blue ie RGB (0,0,255)                Bluescreening

As luck would have it Lego basic red green and blue bricks seem to be close to these colours. Just try to get some card thats similar, but preferably with a matt finish to avoid reflections. Set it back from your objects (even out of focus) so it cannot reflect light back to your foreground objects and light it evenly without shadows.

I find debugmode wax very easy to use, its free and gives good chroma keying.]]></description>
			<author><![CDATA[dummy@example.com (martinprice2004)]]></author>
			<pubDate>Thu, 03 Dec 2009 21:54:01 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/98406/#p98406</guid>
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			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/95920/#p95920</link>
			<description><![CDATA[Maybe you should try masking a bit... It has a pretty cool finished effect. :jaw:]]></description>
			<author><![CDATA[builderbrothers@gmail.com (BuilderBrothers)]]></author>
			<pubDate>Sun, 22 Nov 2009 16:44:52 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/95920/#p95920</guid>
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			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/94369/#p94369</link>
			<description><![CDATA[Since lego minifigs are yellow, which is contained in the color green, blue is actually a better choice.

However, if your minifigure is wearing blue, green is obviously the better option. Seriously, though, jsut go with whatever works. I've done an orange screen before.

- Leo]]></description>
			<author><![CDATA[dummy@example.com (Leonardo812)]]></author>
			<pubDate>Sun, 15 Nov 2009 01:12:42 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/94369/#p94369</guid>
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			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/94322/#p94322</link>
			<description><![CDATA[Leo, I'm afraid the Church of Green must formally request that you retract your statements. All men and women know in their hearts that green is the ONLY color to be used for chromakeying. Those who follow in the path of the blue will bring malice and judgment upon themselves.
- Aaron]]></description>
			<author><![CDATA[dummy@example.com (Jargon)]]></author>
			<pubDate>Sat, 14 Nov 2009 22:30:27 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/94322/#p94322</guid>
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		<item>
			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/94303/#p94303</link>
			<description><![CDATA[I cannot believe we're discussing whether blue or green is better for keying. Guys, it all depends on the situation, what colors your minifig has, etc. Neither is intrinsically better.

- Leo]]></description>
			<author><![CDATA[dummy@example.com (Leonardo812)]]></author>
			<pubDate>Sat, 14 Nov 2009 21:11:39 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/94303/#p94303</guid>
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			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/94299/#p94299</link>
			<description><![CDATA[Well, there's one problem with the color blue: most minifigure clothes, hats, details etc. have that color on them, so it would do worse. I think that green would be better.

P.S. Hey, Thunder-Blade, how do you do a different backround when you use Wax? I can't seem to find out how to do any color other than black.]]></description>
			<author><![CDATA[dummy@example.com (Rusty)]]></author>
			<pubDate>Sat, 14 Nov 2009 20:54:44 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/94299/#p94299</guid>
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			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/94164/#p94164</link>
			<description><![CDATA[Vegas gives 6 options:
Green Screen
Blue Screen
Red Screen
True Green Screen
True Blue Screen
True Red Screen

But all can be edited for whatever color you need. I happen to have a Green Screen.]]></description>
			<author><![CDATA[fib12345@brickmation.net (fib12345)]]></author>
			<pubDate>Fri, 13 Nov 2009 21:08:24 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/94164/#p94164</guid>
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			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/94163/#p94163</link>
			<description><![CDATA[There are a few programs that are free hyunhyun21, I think the best one is Cinegobs Color Keyer.]]></description>
			<author><![CDATA[dummy@example.com (BGanimations)]]></author>
			<pubDate>Fri, 13 Nov 2009 21:05:45 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/94163/#p94163</guid>
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		<item>
			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/94077/#p94077</link>
			<description><![CDATA[I used blue in all my films... so, it's not that new ;)]]></description>
			<author><![CDATA[tom.gudde@gmail.com (T.G-Tom)]]></author>
			<pubDate>Fri, 13 Nov 2009 06:36:26 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/94077/#p94077</guid>
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		<item>
			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/94074/#p94074</link>
			<description><![CDATA[Actually Chroma Keying (new terminology thanks BG) is easy to do with pink. I know from experience with Wax 2.0 that all you need to do is use the color picker tool.]]></description>
			<author><![CDATA[dummy@example.com (Thunder-blade)]]></author>
			<pubDate>Fri, 13 Nov 2009 05:44:09 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/94074/#p94074</guid>
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		<item>
			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/94059/#p94059</link>
			<description><![CDATA[Yeah I don't think pink is a good choice. Besides, how many programs do you see that lets you use pink for chroma keying?]]></description>
			<author><![CDATA[heereskyle@gmail.com (hyunhyun21)]]></author>
			<pubDate>Fri, 13 Nov 2009 02:42:26 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/94059/#p94059</guid>
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			<title><![CDATA[Re: Green Screen Tip]]></title>
			<link>https://bricksinmotion.com/forums/post/94047/#p94047</link>
			<description><![CDATA[Correction, pink is a not-so-great color for CHROMA KEYING, not greenscreening. Greenscreening (or bluescreening, if you like), only can key out three basic elements, green, blue, and red. You could classify pink under red, but it's not too close to red, and if you use red, it sometimes, well, how should I put this, makes the other colors more voilently clash together, even when it's done keying out.]]></description>
			<author><![CDATA[dummy@example.com (BGanimations)]]></author>
			<pubDate>Fri, 13 Nov 2009 02:05:34 +0000</pubDate>
			<guid>https://bricksinmotion.com/forums/post/94047/#p94047</guid>
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