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VOA慢速英语:科学家开发出全息远程呈现系统

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hologram         n.全息图, 全息照片, 综合衍射图, 原样录象 
                   plane hologram
                   平面全息图
                   He added that the missing hologram should have been detected by electronic surveillance.
                   他还说,电子监视设备本应该发现漏印了全息防伪标志。


dimensional    adj.1.尺寸的 
                   2.<物>量纲的;<数>因次的;维的 
                   There are many ways of generating a two-dimensional representation of an object.
                   有很多制作物体二维图的方法。


plea            n.请愿, 请求,恳求 
                   They made no plea for relief.
                   他们并没有申请救济。


photorefractive   :光致折边的


Laser        n.1.激光 
               We keep a laser record.
               我们保存激光唱片。
               2.激光器; 镭射器

New System May Let You Appear Someplace You Have Never Been


This is the VOA Special English Technology Report.


A hologram is a three-dimensional image -- an image that appears to have height, width and depth.


More than thirty years ago, Princess Leia gave her famous holographic plea for help in the original "Star Wars" movie. Since then, holograms have become bigger, better and more widely used.


Now, researchers have developed a holographic telepresence system. Traditional telepresence systems are used in video conferencing. They present two-dimensional images.


But the new system might be able to send a moving 3-D image of a person over great distances -- and show it in close to real time.


Nasser Peyghambarian is the lead researcher for the project at the University of Arizona in Tucson. He says holographic technology can make people appear in places where they have never been.


Nasser Peyghambarian: "People can see you just the way you are as if you've been there."


With the new system, the image is refreshed so often that it seems to look like a person's natural movement. An important part of the system is a screen that can refresh the holographic image every two seconds. The screen is made from a special photorefractive material.


In experiments, the researchers placed sixteen cameras in a half-circle. They took pictures of people from different positions. Then the researchers sent the images to a different place over the Internet.


Lasers at the other end received the pictures and produced holographs on the screen. Mr. Peyghambarian says the new material permits the images to be continually written, erased and replaced.


Nasser Peyghambarian: "Every image that you want to show only takes two seconds to write it. And therefore the next image comes in after that. And this capability allows this system to be used for, for example, telepresence -- that an object in one location now can be [virtually] transferred or can be shown in another location in 3-D."


He says the more cameras and the more pictures that are used, the more realistic the holographic image appears.


The researchers imagine their technology being used for things like 3-D maps and movies requiring no special glasses. Doctors could use it for telemedicine. But the researchers say their holographic telepresence system is still years away from completion.


A report on the system appeared in the journal Nature.


And that's the VOA Special English Technology Report, written by June Simms with Jessica Berman. You can learn about other new uses for 3-D technology at voa.com. You can also join us on Facebook and Twitter at VOA Learning English. We'll talk more about telepresence systems next week. I'm Mario Ritter.


This is the VOA Special English Technology Report.

这里是美国之音科技栏目报道


A hologram is a three-dimensional image -- an image that appears to have height, width and depth.

全息图是一种三维图像,是一种有高度,宽度和深度的图像。


More than thirty years ago, Princess Leia gave her famous holographic plea for help in the original "Star Wars" movie. Since then, holograms have become bigger, better and more widely used.

三十多年前,莱娅公主在第一部“星球大战”电影中发出了求救的全息图。 从那时起,全息图就变成应用量最大,效果最好的,范围最广的图像。


Now, researchers have developed a holographic telepresence system. Traditional telepresence systems are used in video conferencing. They present two-dimensional images.

如今,研究人员已经开发出一种全息网真系统。 传统的网真系统是用于视频会议。 他们呈现的是二维图像。


But the new system might be able to send a moving 3-D image of a person over great distances -- and show it in close to real time.

但是,即使在很远的距离新的系统也可以发送一个人的动态的三维形象,而且几乎是同步显示。


Nasser Peyghambarian is the lead researcher for the project at the University of Arizona in Tucson. He says holographic technology can make people appear in places where they have never been.

Nasser Peyghambarian是在图森市亚利桑那大学的项目首席研究员。 他说,全息技术可以使人们在他们从来没有去过的地方出现。


Nasser Peyghambarian: "People can see you just the way you are as if you've been there."

Peyghambarian Nasser:“人们可以看到‘真实的你’,就好像你在现场一般。”


With the new system, the image is refreshed so often that it seems to look like a person's natural movement. An important part of the system is a screen that can refresh the holographic image every two seconds. The screen is made from a special photorefractive material.

在新系统,图像快速刷新,看起来就像人的自然动作。 系统的一个重要组成部分,是一个可以在每两秒钟内刷新一次全息图的屏幕。 这个屏幕是由一个特殊的光折变材料制成的。


In experiments, the researchers placed sixteen cameras in a half-circle. They took pictures of people from different positions. Then the researchers sent the images to a different place over the Internet.

在实验中,研究人员将十六个照相机放置成一个半圈。 他们从不同的角度拍摄。 然后,研究人员通过网络把图片发送到另外的地方。


Lasers at the other end received the pictures and produced holographs on the screen. Mr. Peyghambarian says the new material permits the images to be continually written, erased and replaced.

另一端的激光器接收到图像,同时在显示屏上生成全息图。佩汉姆巴瑞安称,这种显示屏使用的新材料允许图像不断的被写入、擦除和替换。


Nasser Peyghambarian: "Every image that you want to show only takes two seconds to write it. And therefore the next image comes in after that. And this capability allows this system to be used for, for example, telepresence -- that an object in one location now can be [virtually] transferred or can be shown in another location in 3-D."

Nasser Peyghambarian:“每一个你想显示的形象只需要两秒钟来写入。随后,下一副图像紧接着显示。这种功能使得该系统应用到例如远程呈现系统——即一个地方的物体现在可以以三维形式虚拟移动到或呈现到另一个地方。”


He says the more cameras and the more pictures that are used; the more realistic the holographic image appears.

他表示,相机以及相机拍摄的图片越多,全系图像看上去就越真实


The researchers imagine their technology being used for things like 3-D maps and movies requiring no special glasses. Doctors could use it for telemedicine. But the researchers say their holographic telepresence system is still years away from completion.

研究人员认为这项技术能应用到像3D地图和无需佩戴特殊眼镜就可观看的3D电影上。医生也可以利用该技术进行远程会诊。但研究人员称,全息远程呈现系统真正完成还需要几年时间。


A report on the system appeared in the journal Nature.

该系统的研究报告刊登在一个名为《自然》的杂志上。


And that's the VOA Special English Technology Report, written by June Simms with Jessica Berman. You can learn about other new uses for 3-D technology at voa.com. You can also join us on Facebook and Twitter at VOA Learning English. We'll talk more about telepresence systems next week. I'm Mario Ritter.


内容来自 VOA英语学习网https://www.chinavoa.com/show-516-208561-1.html
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