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Virtual actor

Virtual actor is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Virtual actor rather than just read about it. In short: A virtual actor, also known as virtual human, virtual persona, digital actor, or digital clone is the creation or re-creation of a human being in image and voice using computer-generated imagery and sound, that is often indistinguishable from the real actor. The idea of a virtual actor was first portrayed in the 1981 film Looker, wherein models had their bodies scanned digitally to create 3D computer-generated image…

Key takeaways

  • Virtual actor belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Virtual actor to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Virtual actor from memory before moving on to harder problems.

Reference excerpt

A virtual actor, also known as virtual human, virtual persona, digital actor, or digital clone is the creation or re-creation of a human being in image and voice using computer-generated imagery and sound, that is often indistinguishable from the real actor. The idea of a virtual actor was first portrayed in the 1981 film Looker, wherein models had their bodies scanned digitally to create 3D computer-generated images of the models, which were then animated for use in television commercials. Two 1992 books used this concept: Fools by Pat Cadigan, and Et Tu, Babe by Mark Leyner. In general, virtual humans employed in movies are known as synthespians, virtual actors, cyberstars, or silicentric actors. There are several legal ramifications for the digital cloning of human actors, relating to copyright and personality rights. People who have already been digitally cloned as simulations include Bill Clinton, Marilyn Monroe, Fred Astaire, Ed Sullivan, Elvis Presley, Bruce Lee, Audrey Hepburn, Anna Marie Goddard, and George Burns. By 2002, Arnold Schwarzenegger, Jim Carrey, Kate Mulgrew, Michelle Pfeiffer, Denzel Washington, Gillian Anderson, and David Duchovny had all had their heads laser scanned to create digital computer models thereof.

Early history Early computer-generated animated faces include the 1985 film Tony de Peltrie and the music video for Mick Jagger's song "Hard Woman" (from She's the Boss). The first actual human beings to be digitally duplicated were Marilyn Monroe and Humphrey Bogart in a March 1987 film "Rendez-vous in Montreal" created by Nadia Magnenat Thalmann and Daniel Thalmann for the 100th anniversary of the Engineering Institute of Canada. The film was created by six people over a year, and had Monroe and Bogart meeting in a café in Montreal, Quebec, Canada. The characters were rendered in three dimensions, and were capable of speaking, showing emotion, and shaking hands. In 1987, the Kleiser-Walczak Construction Company (now Synthespian Studios), founded by Jeff Kleiser and Diana Walczak coined the term "synthespian" and began its Synthespian ("synthetic thespian") Project, with the aim of creating "life-like figures based on the digital animation of clay models". In 1988, Tin Toy was the first entirely computer-generated movie to win an Academy Award (Best Animated Short Film). In the same year, Mike the Talking Head, an animated head whose facial expression and head posture were controlled in real time by a puppeteer using a custom-built controller, was developed by Silicon Graphics, and performed live at SIGGRAPH. In 1989, The Abyss, directed by James Cameron included a computer-generated face placed onto a watery pseudopod. In 1991, Terminator 2: Judgment Day, also directed by Cameron, confident in the abilities of computer-generated effects from his experience with The Abyss, included a mixture of synthetic actors with live animation, including computer models of Robert Patrick's face. The Abyss contained just one scene with photo-realistic computer graphics. Terminator 2: Judgment Day contained over forty shots throughout the film. In 1997, Industrial Light & Magic worked on creating a virtual actor that was a composite of the bodily parts of several real actors. In 2000, Microsoft Research published an article by Gordon Bell and Jim Gray, titled "Digital immortality." The authors worked on the system called MyLifeBits to create a "digital clone" of a person from digital data.

21st century By the 21st century, virtual actors had become a reality. The face of Brandon Lee, who had died partway through the shooting of The Crow in 1994, had been digitally superimposed over the top of a body-double in order to complete those parts of the movie that had yet to be filmed. By 2001, three-dimensional computer-generated realistic humans had been used in Final Fantasy: The Spirits Within, and by 2004, a synthetic Laurence Olivier co-starred in Sky Captain and the World of Tomorrow.

Star Wars Since the mid-2010s, the Star Wars franchise has become particularly notable for its prominent usage of virtual actors, driven by a desire in recent entries to reuse characters that first appeared in the original trilogy during the late 1970s and early 1980s. The 2016 Star Wars Anthology film Rogue One: A Star Wars Story is a direct prequel to the 1977 film Star Wars: A New Hope, with the ending scene of Rogue One leading almost immediately into the opening scene of A New Hope. As such, Rogue One called for Industrial Light & Magic to make digital recreations of certain characters so they would look the same as they did in A New Hope, specifically the roles of Peter Cushing as Grand Moff Tarkin (played and voiced by Guy Henry) and Carrie Fisher as Princess Leia (played by Ingvild Deila and voiced by an archive recording of Fisher). Cushing had died in 1994, while Fisher was not available to play Leia during production and died a few days after the film's release. Similarly, the 2020 second season of The Mandalorian briefly featured a digital recreation of Mark Hamill's character Luke Skywalker (played by an uncredited body double and voiced by an audio deepfake recreation of Hamill's voice) as portrayed in the 1983 film Return of the Jedi. Canonically, The Mandalorian's storyline takes place roughly five years after the events of Return of the Jedi.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Virtual actor

Start with the simplest possible case. Write down what Virtual actor claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Virtual actor before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Virtual actor ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Virtual actor

In research
Virtual actor appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Virtual actor in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Virtual actor is common in secondary-school and first-year university syllabi. It links to neighbouring topics 3D computer graphics, Anatomical simulation, Animated characters, so understanding it makes those chapters shorter.
In everyday life
Look for Virtual actor outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Virtual actor in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Virtual actor means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Virtual actor out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Virtual actor in simple terms?

A virtual actor, also known as virtual human, virtual persona, digital actor, or digital clone is the creation or re-creation of a human being in image and voice using computer-generated imagery and sound, that is often indistinguishable from the real actor. The idea of a virtual actor was first po…

Why does Virtual actor matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Virtual actor?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Virtual actor.

Tags

  • 3D computer graphics
  • Anatomical simulation
  • Animated characters
  • Cyberpunk themes

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