How These Scientists Are Turning X-Ray Vision Into a Reality

Have you ever wondered what it would be like to see through walls? Well, researchers at Stanford University might have just cracked the code on this superpower.
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CDT is a process that uses a single-photon avalanche diode and pulsed laser systems to effectively see through a medium. With a short pulse of light, a laser illuminates a point on a surface. From here, the light diffuses through the foam and onto the surface of your targeted object on the opposite side. The light from the laser then bounces off the surface of the object and diffuses once again back through the foam and returns to the original point the laser was illuminated.

Researchers then used a processing algorithm and their collected data points to produce a histogram. Which will show the photon count along the y-axis and time along the x-axis. Through these data points, this helps give researchers their first glimpse of what’s on the other side! But that’s just the first step, in order to get a 3D image this process is done multiple times by scanning a series of points on a grid through a process which the team calls confocal scanning.

These data points then work together to effectively create a blurry map. Using this, researchers can then apply a specific set of algorithms and light filters to reconstruct the completed 3D image of the targeted object. And the best part about it is that although this might seem like a really long process, this team is able to completely restructure an image in as little as 0.3 seconds!

#x-rays #x-rayvision #3Dimages #seeker #science #elements

Read More:
“This is really something where we make the invisible visible”
https://engineering.stanford.edu/magazine/article/really-something-where-we-make-invisible-visible
"Using a new algorithm, a team of researchers have reconstructed the movements of individual particles of light to see through clouds, fog and other obstructions.

Imaging Through Scattering Media
http://www.computationalimaging.org/publications/confocal-diffuse-tomography/
"A new computationally efficient method to recover the 3D shape of objects hidden behind a thick scattering layer."

Seeing Through Walls? The New Tech U.S. Special Forces Want
https://nationalinterest.org/blog/buzz/seeing-through-walls-new-tech-us-special-forces-want-102932
"U.S. Special Operations Command want a detector that can quickly spot where the loot is hidden. The goal of the research project is to develop a handheld device that can detect hidden chambers in an average-sized room and at a range of about 6.5 feet during sensitive site exploitation operations.

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