Femtophotography is a technique that captures ultra-slow motion images of light pulses propagating through a medium. It works by using a camera that can take trillion frames per second to photograph individual photons reflected from an object at different times, which are then combined to recreate the image. Originally developed in 1970, it is now being researched at MIT to visualize light in motion and help with applications like object detection, collision avoidance, and medical imaging like colonoscopies.

1. PRESENTED BY
PRANAVRAM.R
FROM & FOR MECHB
RIT,RAJAPALAYAM

2. Have you seen light??
 If not, You can see the images of bullet pulses of light in Femto-
photography
 Femto-photography technique captures , visualizes the propagation of
the light pulses in a medium through ulta-slowmotion camera
 Initially carried out in 1970 by Nils Abramsson in Sweden, presently
the research is taken up in MIT Media lab led by scientist Ramesh
Raskar, an Indian

3. Before passing light During the propagation of light

4. The camera that takes trillion frames per
second

5. Principle behind in it

6. Concept
◦ A packet of photons are released which travels around with the
speed of the light (Million times faster than ordinary bullet)
◦ The scattering of the packet can shows the light in motion
◦ Each reflected photons reach the camera at different times (each
photon frame can forms a individual raw frame)
◦ These frames combine to develop the replica of image

7. This is the picture of the hidden
mannequin, that is formed by the
reflected photons

8. Applications
Used to identify the unknown object in a place
To avoid collisions in the roadsides

9. Can be used for rescue operations in buildings etc,.
Highly recommended for colonoscopies in medical field

10. Thank you