The ability to separate (resolution) details in a photographed image is the advantage of the synthetic key. Due to the fact that the size of the smallest detail that can be discerned in the image is inversely proportional to the key dimensions of the camera system, the larger the size of the synthetic key, the smaller details the system will be able to simulate
Researchers from Ben-Gurion University of the Negev, Ph.D. student Angika Bulbul under the guidance of Prof. Yosef Rosen from the Department of Electrical and Computer Engineering, have developed a synthetic key imaging system that is about to revolutionize the field of photography from space. A synthetic key of a simulation system is a virtual key much larger than the physical key of the system and is realized by scanning the physical key over time over the area of the synthetic key. The revolutionary innovation in this system is that the physical key only scans the scope of the synthetic key and yet - the system achieves the ability to separate as if the entire area had been scanned.
The ability to separate (resolution) details in a photographed image is the advantage of the synthetic key. Due to the fact that the size of the smallest detail that can be discerned in the image is inversely proportional to the key dimensions of the camera system, the larger the size of the synthetic key, the smaller details the system will be able to simulate.
In an article published in the December issue of Optica, the leading magazine in its field, Bulbul claims that her research shows that several previous assumptions about long-term photography are wrong.
"It has always been thought that the way to improve the image resolution, including photography, of distant celestial bodies is to use lenses, or mirrors, huge telescopes, sometimes several meters in diameter. In the current study, we found that you don't need the entire telescope to get the right images - even by using a small part, as low as 0.43%, of the aperture surface, we were able to achieve image resolution similar to those obtained using the full aperture of lens-based or concave mirror-based vision systems. Therefore, the huge cost, weight and material needed to build space telescopes with huge mirrors can be significantly reduced", according to Angika Bulbul.
"Imaging equipment that will produce high-quality images will be sent into space using small satellites, almost the size of a large milk carton," she added, "this is an invention that completely changes the costs of space exploration, studying astronomy, aerial photography, and the like," Bulbul concluded.
Angika Bulbul, originally from India, authored the article together with Prof. Yosef Rosen and Dr. Vijayakumar Anand, a postdoctoral fellow, also from India. The research focused on a system called Synthetic Marginal Aperture with Revolving Telescopes, or SMART for short. The system is based on an array of small subkeys arranged along the perimeter of the large synthetic key. To demonstrate its capabilities, the team built a miniature working model with an array of subkeys that simulates the large telescope. This is for the purpose of studying the image resolution of the observed target in comparison to images from a normal direct imaging system equipped with the same dimensions of the keys.
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https://www.nanowerk.com/news2/space/newsid=51813.php
Sounds very interesting!
We would be happy if you could be a follow-up article that explains the subject in a more accessible way.
Sounds interesting, it's just a shame that it's written in such an amateurish and incomprehensible way.
1. "The ability to separate (resolution) details in a photographed image is the advantage of the synthetic key. Due to the fact that the size of the smallest detail that can be discerned in the image is inversely proportional to the dimensions of the key of the camera system, the larger the size of the synthetic key, the more the system will be able to simulate smaller details.
In other words, to see really small details you need a huge key, what advantage is that exactly? Sounds more like a disadvantage…
2. "The revolutionary innovation in this system is that the physical key only scans the scope of the synthetic key"
What is a "physical key"? Does it mean the detector that picks up the image from the lenses and mirrors? What is "scan only the perimeter"? That is, the pixels in the center of the image are not used? Only those on the margins?
3. "It has always been thought that the way to improve the image resolution, including photography, of distant celestial bodies is to use lenses, or mirrors, huge telescopes, sometimes with a diameter of several meters"
As far as I know what determines the resolution of the image is the number of pixels in the detector. The lenses and mirrors determine only how many photons will reach each pixel in the detector and how much brighter or paler the resulting image will be.
4. There is no clear explanation as to how this method works, how does a "physical key" translate into a larger synthetic key? Does each pixel in the physical detector become several pixels in the virtual/synthetic key? What is the basis of this method? How does it work?
5. Just wondering, if it is possible to get such a good quality image by using such a small part of the detector, what about using the above method while using 100% of the physical detector/key? Perhaps, for example, it is possible to produce much higher quality images from the Hubble telescope using this method?
A. In astronomy, a very important matter is the amount of light. Telescopes are locked for hours and nights on a certain target, a star, galaxy or region, in order to collect enough light to receive the information. A telescope with 1/2 percent area would have to look 200 times longer to collect the same number of photons.
B. Today there are systems of two telescopes that are optically connected to create a higher resolution image. They reach a large resolution in one dimension. The problem with the optical connection is that it is difficult to perform.
third. Photographing the Earth from space may have an advantage if their system actually succeeds in functioning.
Good luck to the researchers.
I don't understand, usually when you talk about a synthetic key, you mean radar simulation and not visible light observation, if the article really means that you can get the same level of detail of the Hubble Space Telescope with a much smaller telescope, this is really a revolution!
The article is unreadable due to repeated use of technical terms without explanation
Excellent, let them implement it in the world of medicine as well.
Can we call this invention the key to the bulbul?