What VFX & Compositing?

VFX

}  In filmmaking, visual effects abbreviated as VFX are the processes by which imagery is created with the help of VFX & 3D Software.

}  Visual effects involve the integration of live action footage and Computer generated imagery to create environment which look realistic, but would be dangerous, costly or simply impossible to capture on film.

}  Visual effects using Computer generated Imagery (CGI) have become increasingly common in big budgets films and have also recently become accessible to the amateur filmmaker with the introduction of affordable animation and composting Software.

Compositing

}  Compositing is the creative process of assembling and combining filmed or rendered elements from multiple sources, to create a final lifelike illusion or fantastical visual effect, delivered as a set of still or moving pictures.

}  Compositing is the Combining of Visual elements from separate sources into single image, often to create illusion that all those elements are part of same scene.

}  Live Action shooting for composting is variously called “blue Screen”, “Green Screen”, “and “Chroma Key”. Today, most, though not all, composting achieved through digital image manipulation.

}  Digital Compositing is the process of digitally assembling multiple images to make a final image, typically for Motion Pictures or screen display.  It is evolution into the digital realm of optical film compositing.

VFX &SFX

Visual effects created with help of VFX & 3D Software. Special Effects are those effects which are created on set.

Terms related to VFX

Wire-Removal

}  Wire removal is a visual effects technique used to remove wires in films, where the wires are originally included as a safety precaution or to simulate flying in actors or miniatures. Wire removal can be partly automated through various forms of keying, or each frame can be edited manually.

 

 

Chroma Keying

}  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 news casting, motion picture and videogame industries. A color range in the top layer is made transparent, revealing another image behind. The Chroma keying technique is commonly used in video production and post-production.

Rotoscoping

}  Rotoscoping is an animation technique in which animators trace over footage, frame by frame, for use in live-action and animated films. Originally, recorded live-action film images were projected onto a frosted glass panel and re-drawn by an animator.

Cloning

}  Cloning Technique is used to remove or replicate some Elements.

Video tracking

}  Video tracking is the process of locating a moving object (or multiple objects) over time using a camera. It has a variety of uses, some of which are: human-computer interaction, security and surveillance, video communication and compression, augmented reality, traffic control, medical imaging and video editing. Video tracking can be a time consuming process due to the amount of  data that is contained in video. 

Match moving

In visual effects, match moving is a technique that allows the insertion of computer graphics into live-action footage with correct position, scale, orientation, and motion relative to the photographed objects in the shot. 

 Matte painting

A matte painting is a painted representation of a landscape, set, or distant location that allows filmmakers to create the illusion of an environment that is not present at the filming location.