GROUP ZOMBIES WALKS
Zombies are featured widely in Haitian rural folklore as dead persons physically revived by the act of necromancy of a bokor, a sorcerer or witch. The bokor is opposed by the houngan or priest and the mambo or priestess of the formal voodoo religion. A zombie remains under the control of the bokor as a personal slave, having no will of its own. The Haitian tradition also includes an incorporeal type of zombie, the "zombie astral", which is a part of the human soul. A bokor can capture a zombie astral to enhance his spiritual power.
Chroma key compositing, or chroma keying, is a special effects / post-production technique for compositing (layering) two images or video streams together based on color hues (chroma range). The technique has been used heavily in many fields to remove a background from the subject of a photo or video – particularly the newscasting, motion picture and videogame industries. A color range in the foreground footage is made transparent, allowing separately filmed background footage or a static image to be inserted into the scene. The chroma keying technique is commonly used in video production and post-production. This technique is also referred to as color keying, colour-separation overlay (CSO; primarily by the BBC), or by various terms for specific color-related variants such as green screen, and blue screen – chroma keying can be done with backgrounds of any color that are uniform and distinct, but green and blue backgrounds are more commonly used because they differ most distinctly in hue from most human skin colors. No part of the subject being filmed or photographed may duplicate the color used as the backing.
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