Researchers at UC Santa Barbara professor Yasamin Mostofi’s lab have given the first demonstration of three-dimensional imaging of objects through walls using ordinary wireless signal. The technique, which involves two drones working in tandem, could have a variety of applications, such as emergency search-and-rescue, archaeological discovery and structural monitoring.
“Our proposed approach has enabled unmanned aerial vehicles to image details through walls in 3D with only WiFi signals,” said Mostofi, a professor of electrical and computer engineering at UCSB. “This approach utilizes only WiFi RSSI measurements, does not require any prior measurements in the area of interest and does not need objects to move to be imaged.”
The proposed methodology and experimental results appeared in the Association for Computing Machinery/Institute of Electrical and Electronics Engineers International Conference on Information Processing in Sensor Networks (IPSN).
In their experiment, two autonomous octocopters take off and fly outside an enclosed, four-sided brick house whose interior is unknown to the drones. While in flight, one copter continuously transmits a WiFi signal, the received power of which is measured by the other copter for the purpose of 3D imaging.
After traversing a few proposed routes, the copters utilize the imaging methodology developed by the researchers to reveal the area behind the walls and generate 3D high-resolution images of the objects inside. The 3D image closely matches the actual area.
“High-resolution 3D imaging through walls, such as brick walls or concrete walls, is very challenging, and the main motivation for the proposed approach,” said Chitra R. Karanam, the lead Ph.D. student on this project.
This development builds on previous work in the Mostofi Lab, which has pioneered sensing and imaging with everyday radio frequency signals such as WiFi. The lab published the first experimental demonstration of imaging with only WiFi in 2010, followed by several other works on this subject.
“However, enabling 3D through-wall imaging of real areas is considerably more challenging due to the considerable increase in the number of unknowns,” said Mostofi. While their previous 2D method utilized ground-based robots working in tandem, the success of the 3D experiments is due to the copters’ ability to approach the area from several angles, as well as to the new proposed methodology developed by her lab.
The researchers’ approach to enabling 3D through-wall imaging utilizes four tightly integrated key components. First, they proposed robotic paths that can capture the spatial variations in all the three dimensions as much as possible, while maintaining the efficiency of the operation.
Second, they modeled the three dimensional unknown area of interest as a Markov Random Field to capture the spatial dependencies, and utilized a graph-based belief propagation approach to update the imaging decision of each voxel (the smallest unit of a 3D image) based on the decisions of the neighboring voxels.
Third, in order to approximate the interaction of the transmitted wave with the area of interest, they used a linear wave model.
Finally, they took advantage of the compressibility of the information content to image the area with a very small number of WiFi measurements (less than 4 percent). It is noteworthy that their setup consists solely of off-the-shelf units such as copters, WiFi transceivers and Tango tablets.
More information about the project can be found at http://www.ece.ucsb.edu/~ymostofi/3DThroughWallImaging.html The octocopters can be seen in action at https://www.youtube.com/watch?v=THu3ZvAHI9A
Additional information about Mostofi’s research is available at http://www.ece.ucsb.edu/~ymostofi/
Our CEO Zamir Shukhov's interview with the SME Innovator magazine about the GVA methodology, acceleration 3.0 and the future of entrepreneurship in Russia.
GVA is recognized as the TOP CHALLENGER according to the UBI Global World rankings of University-linked Business Incubators and Accelerators.
The article on Vedomosti on cooperation between corporations and start-ups. Among examples, there are three GVA's accelerators: Mega Accelerator, PepsiCo LAB and Faberlic FMCG Accelerator.
“Stock investors can’t invest in Uber, but they can invest in Nasdaq-listed Yandex, owner of Russia’s top ride-hailing platform,” writes WSJ reporter Stephen Wilmot, referring to the Yandex.Taxi platform.
The first face-to-face event in the framework of the StartUp Kazakhstan – program orientation took place in innovation cluster of Tech Garden in Almaty on February 1-2. On the first day General Director of the Autonomous cluster Fund "PIT" (Tech Garden) Sanzhar Kettebekov and CEO of Global Venture Alliance Zamir Shukhov addressed to the participants with the introductory speech.
How do the local startup scenes look like in Estonia, Poland, Russia, Ukraine — but also in less known countries, from Bosnia-Herzegovina, to Moldova, to Georgia? How much do VCs invest these countries? Are corporations involved in these emerging ecosystems? Which are the most well-funded startups, and which younger ones should be followed? Why do so many ICOs come from Eastern Europe?
The beginning of this year saw major moves on the Russian eSports scene, a sizable European market with established players operating globally. Thus, last week Mail.Ru Group — an LSE-listed Internet company which controls the largest Russian-language social networks and a range of online gaming companies — announced the full acquisition of ESforce.
GVA’s partner Pavel Luksha, founder Global Education Futures and professor at Moscow School of Management, has a new report out on what graduates should know and be able to do. “Skills of the Future: How to Thrive in the Complex New World” was developed with WorldSkills Russia during sessions of the Atlas of Emerging Jobs project. The report is a thoughtful review of global trends, changes in work and concludes with implications for education. Not a continuation of the present, the authors “believe that mankind should take a serious approach towards the formation of a desired image of the future.”
On January 22 during the official visit of the President of the Republic of Kazakhstan Nursultan Nazarbaev to the USA the autonomous cluster fund Tech Garden signed a number of important agreements with American companies on the digitization of the economy of Kazakhstan.
At the international GELP Moscow 2017 Summit, which was held in Moscow on 1st to 3rd of November, leaders of Russian and foreign education from 12 states outlined practical steps for systematical change of the global educational environment, taking into account the existing global challenges of civilization.
Global Venture Alliance took part in a closed round table session organized by Forbes Russia.
The authoritative international alliance Global Education Leaders` Partnership (GELP), which influences the development of school education abroad, for the first time, chose Russia as a meeting point for leaders and experts of the world educational community. The official operator of GELP is the Global Venture Alliance.
Global Venture Alliance is the general sponsor of the event on the occasion of the 100th anniversary of the magazine Forbes.
The Global Venture Alliance team on October 17 at the international forum "Open Innovations 2017" in Skolkovo organized a closed signing between RZhD, IBM, NES and NCC in the field of transport logistics.
IKEA Centers Russia and GVA have identified 9 start-ups that will go into the MEGA Accelerator business incubator. Theese are Altair VR virtual planetarium, mobile application Save4time, virtual bot MRBot, VR-platform Hexa, interactive game Ligrook, time scheduler Verme, HR-robot Robot Vera, corporate messenger Beesender and IT-service for lawyers Bots & Partners. This was reported to Firrma in IKEA Centres Russia.
Tim Cook has not-so-subtly hinted that Apple is working on some sort of augmented reality product. And while ARKit may be the start, a patent application published today hints at what Apple could be picturing down the road.
Apple has teamed up with Australian-based Cochlear to bring iPhone users the first made for iPhone Cochlear implant.
Approved by the U.S. Food and Drug Administration in June, Cochlear’s Nucleus 7 Sound Processor can now stream sound directly from a compatible iPhone, iPad or iPod touch to the sound processor.
Google’s London-based AI outfit DeepMind has created two different types of AI that can use their ‘imagination’ to plan ahead and perform tasks with a higher success rate than AIs without imagination. Sorry if I made you click because you wanted AIs predicted flying cars. I promise this is cool too.
Scientists at MIT are using Wi-Fi and AI to determine your emotional state. They’ve created an algorithm that can detect and measure individual heartbeats by bouncing RF signals off of people.