In a luminance key, everything in the image over (or under) a set brightness level is "keyed" out and replaced by either another image, or a color from a color generator. If your talent is wearing a blue shirt infront of a blue screen, you’ll remove the shirt, and not in a fun way. The level control knob on the keyer is adjusted to cause all the black on the title card to be replaced by the background video. It is not specific to any one software package, but rather focuses on the tools that all have in common, and more importantly really explains well how they all work. http://easywebvideosoftware.com/green-screen/blue-screen-chroma-color.php
A disadvantage is that green spill is almost always objectionable and obvious even in small amounts, while blue can sometimes slip by unnoticed. You don’t want to shoot on a blue screen if there’s a blue object in your scene, and thesame goes for green. I’ll try and demystify this so whenever you want to insert yourself into a pool partywith a bunch of supermodels you can do so properly. There are more advanced reasons to choose one color over the other, but these simple rules shouldget you through the chroma keying battlefield with only a few bumps and bruises. http://www.chromawall.com/blog//chroma-key-blue
Digital Compositing for Film and Video by Steve Wright This book seems very useful for anyone making digital composites from either film or electronic masters. Can't other colors be used? Related Posts17 Tips from the Industry and Creator Tracks at VidCon 2016 Andy SmithJune 28, 2016How Your B2B Business Can Get Real Long-Tail Value From YouTube Dane GoldenJune 9, 2016Top 7 Green has its own advantages, beyond the obvious one of greater flexibility in matting with blue foreground objects.
The Chroma Key process is based on the luminance key. His page is www.bluescreen.com. Those areas might key through along with the backdrop. Green Screen Backgrounds You can get around this a little, but stick with this rule ofthumb for now since you’re just getting started: If there’s blue in the scene, shoot on green.Easy peasy.
The compositing process, whether photo-chemical or digital, replaces all the blue in the picture with another image, known as the background plate. Chroma Key Software If you’re planning toput your characters into a scene taking place during the day, shoot them on green. We're listening!Want to chime in on this article? http://savageuniversal.com/blog/green-screens-vs-blue-screens Green paint has greater reflectance than blue paint, which can make matting easier.
This is known as blue spill. How To Use A Green Screen This made it possible to select any color for the key and fine tune the selection of the color tint, chroma level and luminance level. For now, this page will mainly refer to the process as blue screen, but almost everything here applies to green screen effects too, except where noted.) Creating a blue screen composite In addition to blue, other colors can be used.
The camera signal is fed into the keyer's foreground input. Blue is the complementary color to flesh tone--since the most common color in most scenes is flesh tone, the opposite color is the logical choice to avoid conflicts. What Is A Green Screen Share your thoughts with us on Facebook or Twitter.Previous ArticleTwitter Considers Original Web Series, YouTube Redesigns HomepageNext ArticleList of Cloud-Based Video Encoding Tools and Services Mark R Robertson Mark Robertson is Green Screen Vs Blue Screen Chroma Key creates keys on just one color channel.
Luminance keying works great with titles, but not so great for making live action composites. this content The screen must be integrated into the set design, and it is easier to design around a bright sky blue than an intense green or red. Chroma Key green and blue in RGB & hex value's by bram chroma key green: 0,255,0 or Hex #00ff00 chroma key blue: 0,0,255 or Hex #0000ff Published on December 15, 2010in The broader term from the days of film optical effects is "traveling matte composite", but that has fallen out of favor. Chroma Key Green Screen
One final thing to keep in mind when picking your backdrop color is how much space you have. Once the exclusive domain of Hollywood special effects artists, blue screen compositing expanded to include video and computer imaging. There are many mysteries to the succesful execution of a blue screen composite and considerable confusion as to what a blue screen composite is. http://easywebvideosoftware.com/green-screen/blue-screen-chroma.php Bob Kertesz is the Grandmaster of Ultimatte.
This creates a problem on three camera sets; the other cameras can see the blue screen. Green Screen Material You’d be able to see green spill plain as day in a nighttime shot, but the blue will bemasked by the bluish tinge of the moonlight. A more sophisticated television process is Ultimatte; also the name of the company that manufactures Ultimatte equipment.
Another term for Blue Screen is Chroma-Key. idoru.be/notes Manuals, writings and idea's from an techie. Sometimes (usually) the background color reflects onto the foreground talent creating a slight blue tinge around the edges. Green Screen Color Code This works, sort of, but soon manufacturers created dedicated chromakeyers that could accept all 3 colors, plus the background composite signal, and the foreground composite signal.
Ultimatte has been the ultimate in video compositing for 20 years. Books About Special Effects Most books about compositing have been about the post production side, not the on set side, but there is finally a book that covers both: Bluescreen What is Blue Screen Imaging? (First a note about terminology: when I first wrote this page in 1995, the common term in use was "blue screen" compositing. check over here You may already know that they do this so they caneasily remove the color in post production and superimpose the characters onto a differentALSO ► Donald Trump Knows How to Promote,
The Art and Science of Digital Compositing by Ron Brinkmann Another interesting book is Digital Compositing in Depth by Doug Kelly. How does Chroma Key work? Many cameras can output these RGB signals separately from the composite video signal. The background video is fed into the keyer.
Hair, shoes and shadow areas may be very dark, while eyes, skin highlights and shirt collars can approach 100% white. He is a YouTube Certified, video marketing expert, popular speaker, and a passionate thought-leader within the online video and search marketing industries. And, he now sells Ultimatte software online. Here is a page of Useful Books on Film and Video topics.