Frage von forley:
Hello
I'm still fresh in this area, so you can help me for sure:
Is it true that very bright, neon-colored scarves are very suitable as a background? I am thinking that these neon colors in nature's practically not even occur - so yes you would have to be perfect herausgefilter!?
The other question is whether one could synonymous use other colors, for example, a magenta scarf ...
Gruss
Antwort von Hogar:
The classic blue was chosen because it is s.weitesten path of color, and now works with secure s.besten yet. Because the Camera and keying technology has advanced, however, you can just use synonymous synonymous green or magenta. Magenta, I have seen for example in the Making of The Matrix. And synonymous with an O2 Werbespot Making of () with the Veronika Fischer and the ants.
I would imagine that it may be synonymous chosen because reflections on the skin are not seen as strong, but the color is still different enough to the rest of the image to keyen it can. Exactly, I know but not synonymous.
I sometimes need to switch between green and blue because s.haben the "switching guests" just blue or green ties. Funny, if either a blue / green striped tie s.hat.
What can you take for colors, depends greatly of your Camera, Lighting, from keying and possibility. You can not just say, necessarily, the neon colors are especially good. On the color intensity is what matters. Of course - a Color keyen can be very good if they are not only intense, but is synonymous bright. But then it has quickly synonymous reflections on the people.
If you have more hobbies Equipment (1CCD Cam) am sure you have more success with the classic blue. Otherwise, you need to test. You're a couple of times you can certainly color print on a sheet of paper, the filming and then pull the key control slowly, and look at what s.schnellsten appeals.
But a substance is safe again look different.
The best success I had with such Mediums. Was very hardships in order to paint a blue box, but then I had time synonymous. And it worked then synonymous with a 1CCD - VHS Kam;)
No blue ever came up s.das the Mediums.
Well, find out about the best, you have to try it probably.
Perhaps you helped hats anyway:)
Hogar
Antwort von Axel:
Hello Forley,
myself am still a long way with Keyen busy, but I have made some experiences that might help you save time and Money:
1. Keyingfarbe is theoretically free to be chosen from the color spectrum, but may be exempted, the object, respectively. This person does not have color s.sich. Therefore, the unusual shades of blue or green screen. A tip: Also suitable WHITE (background "woodchip wallpaper). Eyes and teeth you can before roughly keying, masking, sounds more complex than it is.
2. No. You must make compromises in the lighting. Here, the burden is huge, if you want a computer in half clean result.
3. Pick a uniformly colored background without gross structure (from a distance does it mention the woodchip wallpaper anyway).
4. Illuminate the background with highly dispersed, bright light. The best in fact with those mentioned in previous posts relating to fluorescent bulbs - floodlights. Loan you a light meter, and check whether the lighting is really perfect uniform!
5. Light separately from the foreground. Note: For a white background precluded the so-called highlight, a side of the back of his head directed clip, which produces a light border.
6. Use the recording is not the automatic white balance, but the same from the foreground image manual. The actual color temperature of exempted foreground and background, you already have a new in After Effects, or where ever change, yet.
7. Unfortunately, you should be synonymous motion blur and thus avoid sharp movements in the foreground. The edges otherwise arising in single-frame editing mode binds you for many evenings s.den Calculator to adjust a few seconds.
Antwort von matthew:
for video: greenscreen
for film: bluescreen
the color turns green when dv is not so much compressed, and so we can obtain better keyen.
gruß matthew
Antwort von Markus:
the color turns green when dv is not so much compressed, and so we can obtain better keyen. Hi Matthew,
this is not really true. For camcorders with one CCD imager is used, a filter matrix, in which are recorded more green pixels than red or blue.
zum Bild In contrast, recorded 3CCD camcorders with j
eder image intensifier, the T
OTAL Picture, one each in red, green and blue.
zum Bild The color compression is done for all three primary colors on the same principle, namely by means of
4:2:0-Abtastung. No der drei Farben wird dabei bevorzugt. Es spielt technisch also keine Rolle, welche Color zum Keyen s.besten ist. Das ist allein abhängig vom freizustellenden Motiv and of den individuellen Eigenschaften eines Camcorders.
Verwandtes Thema:
keying with Commotion 4.1
Antwort von Strahlemann:
The procedure described above applies to the DSP (Digital Signal Processing) - then we, the signal in the Y-Cb-Cr and cut with the (PAL) shows 4:2:0 color compression.
It is wrong, however, the assertion that all colors are equally compressed!
The colors are mixed in a certain ratio (I) just only the NTSC values in mind:
Y = 0.299 R + 0.587 G + 0.114 B
Ie: The recording is very well with a reduced color space where green is s.wenigsten compressed and is therefore s.Detailreichsten.
Antwort von GhostDog:
sag ich doch ;-)
Antwort von Markus:
No. of the three colors is preferred. Hello,
which I have described seems misleading. I was referring with the above statement only to the Resolutiondes color signal. The conclusion of the brightness signal (as described of Luke) is a different matter: Here is precisely defines what weighting red, green and blue light has s.der) (see formula called. This is synonymous clear why such green in black and white image appears brighter than (in the same bright color TV) blue.
The
weighting of the three primary colors in the brightness signal to the
resolution now in the same color signal ...
In contrast, chrominance red, green and blue are (offset in U and V or Cb and Cr) is not transferred with different resolution. Green would be resolved more effectively than red and blue, they would present themselves ugly color fringes on the screen.
