Ramesh Raskar: Imaging at a trillion frames per second
라메쉬 라스카르: 1초당 1조개의 영상 만들기
Photography is about creating images by recording light. At the MIT media lab, professor Ramesh Raskar and his team members have invented a camera that can photograph light itself as it moves at, well, the speed of light. Full bio
Double-click the English transcript below to play the video.
이 사진으로
사진을 보여드리려고 하는데요
*femto: 1000조분의 1, 즉 1/10^-15
느린 그림으로 만들 수도 있습니다.
우리 몸 안을 들여다 볼 수도 있습니다.
*1 나노초(10억분의 1초)
이 연구를 지원하지는 않았습니다.(웃음)
무슨 일이 일어나고 있는지 보여드리죠.
얼마나 기다려야 하는지 아시겠어요?
자연이 사진을 만들어내는 방식입니다.
총체적인 장면을 봅니다.
아실거에요.
잘 익은건지 판단하실 수 있을지도 모릅니다.
조각을 이용하는 겁니다.
우리가 실제로 만들었거든요.
물론, 문까지의 거리 뿐 아니라
특별한 의미는 없어 보이죠.
그렇지만, 훗날
극단적으로 빠른 속도의 사진으로 된 예술이 된거죠
*DIY: Do iy yourself.
명료함에만 매료되지 않을 수도
ABOUT THE SPEAKER
Ramesh Raskar - Femto-photographerPhotography is about creating images by recording light. At the MIT media lab, professor Ramesh Raskar and his team members have invented a camera that can photograph light itself as it moves at, well, the speed of light.
Why you should listen
In 1964 MIT professor Harold Edgerton, pioneer of stop-action photography, famously took a photo of a bullet piercing an apple using exposures as short as a few nanoseconds. Inspired by his work, Ramesh Raskar and his team set out to create a camera that could capture not just a bullet (traveling at 850 meters per second) but light itself (nearly 300 million meters per second).
Stop a moment to take that in: photographing light as it moves. For that, they built a camera and software that can visualize pictures as if they are recorded at 1 trillion frames per second. The same photon-imaging technology can also be used to create a camera that can peer "around" corners , by exploiting specific properties of the photons when they bounce off surfaces and objects.
Among the other projects that Raskar is leading, with the MIT Media Lab's Camera Culture research group, are low-cost eye care devices, a next generation CAT-Scan machine and human-computer interaction systems.
Papers:
Andreas Velten, Thomas Willwacher, Otkrist Gupta, Ashok Veeraraghavan, Moungi G. Bawendi and Ramesh Raskar, “Recovering ThreeDimensional Shape around a Corner using Ultra-Fast Time-of-Flight Imaging.” Nature Communications, March 2012
Andreas Velten, Adrian Jarabo, Belen Masia, Di Wu, Christopher Barsi, Everett Lawson, Chinmaya Joshi, Diego Gutierrez, Moungi G. Bawendi and Ramesh Raskar, "Ultra-fast Imaging for Light in Motion" (in progress). http://femtocamera.info
Ramesh Raskar | Speaker | TED.com