From VOA Learning English,

this is the Technology Report.

Movie fans know that their action hero Superman

does not really fly.

And, in the movie Superman Returns,

another visual trick is played on viewers.

The man they see flying is not real.

He is what is called a virtual actor.

The first step in creating this digital actor

is to have a real person stand in a room

called a light stage.

A computer then captures the outlines

and shapes of his face

and records how they throw off light.

Paul Debevec is with the Institute

for Creative Technologies

at the University of Southern California.

"We can light them with very specially

computer-controlled illumination

and take photos of them

from seven different viewpoints

with high resolution digital still cameras."

Mr. Debevec is part of a team working

to create computerized images of people,

objects and environments that look and act real.

The light stage permits actors

to be turned into digital versions of themselves

much like the blue creatures in the movie Avatar.

The real world could soon be using a similar technology.

Computer experts at the Institute

are developing a 3-D video teleconferencing system.

It would send a video image of a person into a meeting room.

That image would be able to work

with the people in the room,

who would see it in 3-D without special eyeglasses.

Paul Debevec says:

"The person who is being transmitted to a remote location

can actually look around at the people in the room

and everybody in that room knows who they're looking at.

And that's such a fundamental part of human communication."

He believes the business world will begin

to use 3-D video teleconferencing in the next five years.

The Institute is using its light stage

and Interactive 3-D Display technology

to record video testimonies of Holocaust survivors

for the Shoah Foundation.

"Do you remember any songs from your youth?"

"This is a lullaby that my mother used to sing to me

and I still remember it. It's in polish."

The Foundation is also at the University of Southern California.

The 3-D images will be shown on special screens in classrooms

or museums and will be set up to answer questions

about the Holocaust from students and visitors.

"It could be about faith. It could be about love.

It could be about beliefs.

It could be about identity."

Kim Simon is managing director of the Shoah Foundation.

"It's also a medium with which young people today

are particularly comfortable.

And, the amount of information that comes through

seeing a person's face and hearing their voice

at the same time is multiplied."

A demonstration of an interaction between a Holocaust survivor

and students may be possible in a year.

In 10 years, we may be able to play 3-D video games

without special glasses.