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  2. Chroma key - Wikipedia

    en.wikipedia.org/wiki/Chroma_key

    Chroma key compositing, or chroma keying, is a visual-effects and post-production technique for compositing (layering) two or more images or video streams together based on color hues (chroma range). The technique has been used in many fields to remove a background from the subject of a photo or video – particularly the newscasting , motion ...

  3. Primatte chromakey technology - Wikipedia

    en.wikipedia.org/wiki/Primatte_chromakey_technology

    The Primatte chromakey algorithm is a method of color space segmentation, where Primatte segments all the colors in the foreground image into one of four separate categories. The result is a 'spill suppressed' foreground image and a matte which is used to apply the modified foreground to a suitable background. Primatte works in 3D RGB color space.

  4. Blue screen - Wikipedia

    en.wikipedia.org/wiki/Blue_screen

    Download QR code; Print/export ... Blue screen, Blue Screen or bluescreen may refer to: Chroma key or blue-screen compositing, a technique for ...

  5. Compositing - Wikipedia

    en.wikipedia.org/wiki/Compositing

    Live-action shooting for compositing is variously called "chroma key", "blue screen", "green screen" and other names. Today, most compositing is achieved through digital image manipulation. Pre- digital compositing techniques, however, go back as far as the trick films of Georges Méliès in the late 19th century, and some are still in use.

  6. Petro Vlahos - Wikipedia

    en.wikipedia.org/wiki/Petro_Vlahos

    For the film Ben Hur he refined the color-difference bluescreen process that made memorable visual effects possible in films and developed a way to minimize the unfortunate side effects of earlier methods. Vlahos' breakthrough was to create a complicated laboratory process which involved separating the blue, green and red parts of each frame ...

  7. Color key - Wikipedia

    en.wikipedia.org/wiki/Color_key

    Color key may refer to: Chroma key composition, a special effects technique layering images or video streams together; Colorist work and the materials used, adding details to black-and-white line art; Prepress proofing guides, used for fine-tuning items in printing presses

  8. Company behind incorrect Los Angeles alert says it added new ...

    www.aol.com/company-behind-incorrect-los-angeles...

    The company behind Los Angeles' emergency alert technology said it has added safeguards to prevent further inaccurate wildfire evacuation alerts from being sent to residents amid deadly ...

  9. Visual effects - Wikipedia

    en.wikipedia.org/wiki/Visual_effects

    [12] [13] Chroma key is more often used for this, as it is faster and requires less work, however, rotoscope is still used on subjects that are not in front of a green (or blue) screen, due to practical or economic reasons.