TED演讲 第2期:3D捕捉古代奇迹(2)

The results of our work in the field

are used to produce

media and deliverables to be used

by conservators and researchers.

We also produce media for

dissemination to the public --

free through the CyArk website.

These would be used for education,

cultural tourism, etc.

What you're looking at in here

is a 3D viewer that we developed

that would allow the display

cloud of points

in real time, cutting sections through them

and extracting dimensions.

This happens to be the cloud of points

for Tikal.

In here you see a traditional 2D

architectural engineering drawing

that's used for preservation, and of course

we tell the stories through fly-throughs.

And here, this is a fly-through

the cloud of points of Tikal,

and here you see it rendered

and photo-textured with the photography

that we take of the site.

And so this is not a video.

This is actual 3D points with

two to three millimeter accuracy.

And of course the data can be used

to develop 3D models that are

very accurate and very detailed.

And here you're looking at a model

that's extracted from the cloud of points

for Stirling Castle.

It's used for studies, for visualization,

as well as for education.

And finally, we produce mobile apps

that include narrated virtual tools.

The more I got involved

in the heritage field,

the more it became clear to me

that we are losing the sites

and the stories faster than we can

physically preserve them.

Of course, earthquakes

and all the natural phenomena --

floods, tornadoes, etc. --

take their toll.

However, what occurred to me was

human-caused destruction, which was

not only causing a significant portion

of the destruction, but actually

it was accelerating.

This includes arson,

urban sprawl,

acid rain, not to mention

terrorism and wars.

It was getting more and more apparent

that we're fighting a losing battle.

We're losing our sites

and the stories,

and basically we're losing

a piece -- and a significant piece --

of our collective memory.

Imagine us as a human race

not knowing where we came from.

Luckily, in the last two or three decades,

digital technologies have been developing

that have helped us to develop tools

that we've brought to bear

in the digital preservation,

in our digital preservation war.

This includes, for example,

the 3D laser scanning systems,

ever more powerful personal computers,

3D graphics,

high-definition digital photography,

not to mention the Internet.

Because of this accelerated

pace of destruction,

it became clear to us that we needed

to challenge ourselves and our partners

to accelerate our work.

And we created a project

we call the CyArk 500 Challenge --

and that is to digitally preserve

500 World Heritage Sites

in five years.

We do have the technology

that's scaleable,

and our network of global partners

has been expanding and can be expanded

at a rapid rate,

so we're comfortable

that this task can be accomplished.