| ||Thread Tools|
|19th June 2013, 06:37||#1|
Join Date: May 2010
Researchers use smartphone to create indoor map
A team of Swiss researchers has worked out a way to use a smartphone to create a map of the inside of a building.
According to the study's lead author electrical engineer Ivan Dokmanic of the Swiss Federal Institute of Technology in Lausanne, an algorithmóbased on the sort of echolocation that bats and dolphins use to navigateócould be incorporated into mobile phone apps to determine room dimensions for architectural or design purposes
He claims it could also be used to develop more realistic echoes in video games and virtual reality simulations and to eliminate the echo from phone calls.
Sorting out individual echoes from a recording is technically challenging and it needs microphones.
The researchers had someone stand in the centre of the room and snap their fingers or pop a balloon. Then they developed a mathematical algorithm to analyse the recordings from each microphone. Their method first eliminated echoes that had bounced off more than one wall or off small objects within the room in order to simplify the problem.
They worked out that every echo could be considered mathematically equivalent to a sound that emanated from a mirror image of the source.
This meant that they could manipulate the data that turned out to be the key to sifting through the sounds.
Dokmanic and his colleagues took the setup to Lausanne Cathedral where it was able to map the Gothic structure.
Integrating the calculations in other programs would open up real-world applications, Dokmanic says.
Mobile phone appsórequiring a few phones in one roomócould be programmed to spit out room dimensions faster than it takes to pull out a tape measure and do it manually.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Oxford University researchers create new 3D printed 'soft material'||Stefan Mileschin||WebNews||0||8th April 2013 08:01|
|Berkeley researchers create super responsive graphene earphones||Stefan Mileschin||WebNews||0||15th March 2013 07:49|
|Researchers create working biobattery to power hearing device||Stefan Mileschin||WebNews||0||8th February 2013 06:35|
|Researchers create disposable paper USBs||Stefan Mileschin||WebNews||0||3rd January 2013 07:14|
|Researchers create working quantum bit in silicon, pave way for PCs of the future||Stefan Mileschin||WebNews||0||21st September 2012 07:23|
|Harvard researchers create cyborg tissues||Stefan Mileschin||WebNews||0||31st August 2012 06:20|
|Korean researchers create stretchy transistors made of graphene||Stefan Mileschin||WebNews||0||31st October 2011 07:36|
|Researchers create new flexible LED||Shogun||WebNews||0||22nd August 2009 16:40|
|Northwestern Researchers Create Graphene in a Flash||jmke||WebNews||0||14th August 2009 14:40|
|Researchers create light bending material for invisibility cloak||jmke||WebNews||0||11th August 2008 11:47|