Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

University of Nevada, Reno, scientists design indoor navigation system for blind

21.05.2012
Low-cost accessible software uses smartphone and robot technology

University of Nevada, Reno computer science engineering team Kostas Bekris and Eelke Folmer presented their indoor navigation system for people with visual impairments at two national conferences in the past two weeks.

The researchers explained how a combination of human-computer interaction and motion-planning research was used to build a low-cost accessible navigation system, called Navatar, which can run on a standard smartphone.

"Existing indoor navigation systems typically require the use of expensive and heavy sensors, or equipping rooms and hallways with radio-frequency tags that can be detected by a handheld reader and which are used to determine the user's location," Bekris, of the College of Engineering's Robotics Research Lab, said. "This has often made the implementation of such systems prohibitively expensive, with few systems having been deployed."

Instead, the University of Nevada, Reno navigation system uses digital 2D architectural maps that are already available for many buildings, and uses low-cost sensors, such as accelerometers and compasses, that are available in most smartphones, to navigate users with visual impairments. The system locates and tracks the user inside the building, finding the most suitable path based on the users special needs, and gives step-by-step instructions to the destination.

"Nevertheless, the smartphone's sensors, which are used to calculate how many steps the user has executed and her orientation, tend to pick up false signals," Folmer, who has developed exercise video games for the blind, said. "To synchronize the location, our system combines probabilistic algorithms and the natural capabilities of people with visual impairments to detect landmarks in their environment through touch, such as corridor intersections, doors, stairs and elevators."

Folmer explained that as touch screen devices are challenging to use for users with visual impairments, directions are provided using synthetic speech and users confirm the presence of a landmark by verbal confirmation or by pressing a button on the phone or on a Bluetooth headset. A benefit of this approach is that the user can leave the phone in their pocket leaving both hands free for using a cane and recognizing tactile landmarks.

"This is a very cool mix of disciplines, using the user as a sensor combined with sophisticated localization algorithms from the field of robotics," Folmer, of the University's Computer Science Engineering Human-Computer Interaction Lab, said.

The team is currently trying to implement their navigation system in other environments and integrate it into outdoor navigation systems that use GPS.

"My research is motivated by the belief that a disability can be turned into an innovation driver," Folmer said. "When we try to solve interaction design problems for the most extreme users, such as users with visual impairments, there is the potential to discover solutions that may benefit anyone. Though the navigation system was specifically developed for users with visual impairments, it can be used by sighted users as well."

For their work on the indoor navigation system for the blind, Bekris and Folmer recently won a PETA Proggy Award for Leadership in Ethical Science. PETA's Proggy Awards ("Proggy" is for "progress") recognize animal-friendly achievements. The navigation system was deemed such an achievement because it could decrease the need to rely on guide dogs.

They presented and demonstrated their research at the IEEE International Conference on Robotics and Automation in St. Paul., Minn. on May 15 and on May 7 at the CM SIGCHI Conference on Human Factors in Computing Systems, which is the premier international conference on human-computer interaction.

For more information on the system, visit http://eelke.com/navatar. For more information about the University of Nevada, Reno College of Engineering, visit http://www.unr.edu/engineering/.

Nevada's land-grant university founded in 1874, the University of Nevada, Reno has an enrollment of 18,000 students and is ranked in the top tier of the nation's best universities. Part of the Nevada System of Higher Education, the University has the system's largest research program and is home to the state's medical school. With outreach and education programs in all Nevada counties and with one of the nation's largest study-abroad consortiums, the University extends across the state and around the world. For more information, visit www.unr.edu.

Media Contact:
Mike Wolterbeek
Media Relations Officer
University Media Relations
University of Nevada, Reno/108
Reno, NV 89557
mwolterbeek@unr.edu
Media newsroom: http://newsroom.unr.edu
775-784-4547 phone
775-784-1422 fax

Mike Wolterbeek | EurekAlert!
Further information:
http://www.unr.edu

More articles from Information Technology:

nachricht Efficient time synchronization of sensor networks by means of time series analysis
24.01.2017 | Alpen-Adria-Universität Klagenfurt

nachricht Ultra-precise chip-scale sensor detects unprecedentedly small changes at the nanoscale
18.01.2017 | The Hebrew University of Jerusalem

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Scientists spin artificial silk from whey protein

X-ray study throws light on key process for production

A Swedish-German team of researchers has cleared up a key process for the artificial production of silk. With the help of the intense X-rays from DESY's...

Im Focus: Quantum optical sensor for the first time tested in space – with a laser system from Berlin

For the first time ever, a cloud of ultra-cold atoms has been successfully created in space on board of a sounding rocket. The MAIUS mission demonstrates that quantum optical sensors can be operated even in harsh environments like space – a prerequi-site for finding answers to the most challenging questions of fundamental physics and an important innovation driver for everyday applications.

According to Albert Einstein's Equivalence Principle, all bodies are accelerated at the same rate by the Earth's gravity, regardless of their properties. This...

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Breaking the optical bandwidth record of stable pulsed lasers

24.01.2017 | Physics and Astronomy

Choreographing the microRNA-target dance

24.01.2017 | Life Sciences

Spanish scientists create a 3-D bioprinter to print human skin

24.01.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>