Navigation Links
Infrared digital holography allows firefighters to see through flames, image moving people
Date:2/26/2013

Firefighters put their lives on the line in some of the most dangerous conditions on Earth. One of their greatest challenges, however, is seeing through thick veils of smoke and walls of flame to find people in need of rescue. A team of Italian researchers has developed a new imaging technique that uses infrared (IR) digital holography to peer through chaotic conflagrations and capture potentially lifesaving and otherwise hidden details. The team describes its breakthrough results and their applications in a paper published today in the Optical Society's (OSA) open-access journal Optics Express.

Firefighters can see through smoke using current IR camera technology. However, such instruments are blinded by the intense infrared radiation emitted by flames, which overwhelm the sensitive detectors and limit their use in the field. By employing a specialized lens-free technique, the researchers have created a system that is able to cope with the flood of radiation from an environment filled with flames as well as smoke.

"IR cameras cannot 'see' objects or humans behind flames because of the need for a zoom lens that concentrates the rays on the sensor to form the image," says Pietro Ferraro of the Consiglio Nazionale delle Ricerche (CNR) Istituto Nazionale di Ottica in Italy. By eliminating the need for the zoom lens, the new technique avoids this drawback.

"It became clear to us that we had in our hands a technology that could be exploited by emergency responders and firefighters at a fire scene to see through smoke without being blinded by flames, a limitation of existing technology," Ferraro says. "Perhaps most importantly, we demonstrated for the first time that a holographic recording of a live person can be achieved even while the body is moving."

Holography is a means of producing a 3-D image of an object. To create a hologram, such as those typically seen on credit cards, a laser beam is split into two (an object beam and a reference beam). The object beam is shone onto the object being imaged. When the reflected object beam and the reference beam are recombined, they create an interference pattern that encodes the 3-D image.

In the researchers' new imaging system, a beam of infrared laser light is widely dispersed throughout a room. Unlike visible light, which cannot penetrate thick smoke and flames, the IR rays pass through largely unhindered. The IR light does, however, reflect off of any objects or people in the room, and the information carried by this reflected light is recorded by a holographic imager. It is then decoded to reveal the objects beyond the smoke and flames. The result is a live, 3-D movie of the room and its contents.

The next step in moving this technology to the field is to develop a portable tripod-based system that houses both the laser source and the IR camera. The systems may also be suitable for fixed installation inside buildings or tunnels. In addition, the team is exploring other applications, most notably in the biomedical field for non-destructive testing of large aerospace composite structures.

"Besides life-saving applications in fire and rescue, the potential to record dynamic scenes of a human body could have a variety of other biomedical uses including studying or monitoring breathing, cardiac beat detection and analysis, or measurement of body deformation due to various stresses during exercise," Ferraro says. "We are excited to further develop this technology and realize its application for saving and improving human life."


'/>"/>

Contact: Angela Stark
astark@osa.org
202-416-1443
Optical Society of America
Source:Eurekalert  

Related medicine news :

1. X-Factor Communications Announces Availability of the 4.0 Release of its DSCP://Digital Screen Control Portal with New Features and Support of Multiple Devices
2. MDWebPro, a division of Digital Solutions, Inc. Releases "Healthcare Social Media Week in Review #HSCM: February 11, 2013
3. Securityhunter Hires DigitalFury Technologies to Furnish Program Management Support for Federal Electronic Security System Programs
4. Articlesontap.com to Provide Content Creation & Management for Digitaldirectsecurity.co.uk
5. WriteResult Releases White Paper on Utilizing Digital Pen for ePRO
6. Capsule Endoscopy (Smart/Digital Pills) Market is expected to grow at a CAGR of 17% & to reach $965 Million by 2017 - by MarketsandMarkets
7. Digital diagnostic tools lead to patient dissatisfaction, says MU expert
8. Show Me the Money: Living in Digital Times presents Investing in the Sports & Fitness Industry
9. Digital Living Room Market is Growing at CAGR of 2.55% to Reach $217.58 Billion by 2018, Says New Report by MarketsandMarkets
10. Life’s Eyes Media Offering Digital Military Christmas Greetings Videos
11. Exack LLC Announced Today the Launch of its New High Quality Digital Micro Voice Recorder, MemClick
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Infrared digital holography allows firefighters to see through flames, image moving people
(Date:10/13/2017)... ... October 13, 2017 , ... ... process to promote standards of excellence for the field of eating disorders, announces ... 22 – 25, 2018 in Orlando, Florida at the Omni Resort at ChampionsGate. ...
(Date:10/13/2017)... ... October 13, 2017 , ... ... Pharmacy (SOP) alumni Hannah Randall, PharmD ‘17, and Jennifer Huggins, PharmD ’17, ... guideline updates for the primary prevention of cardiovascular diseases during the 15th ...
(Date:10/13/2017)... (PRWEB) , ... October 13, 2017 , ... Apple ... care services, staged a mock evacuation of the facility as part of a disaster ... Fire Department, Echo Hose EMS and Shelton City Emergency Manager, as well as the ...
(Date:10/13/2017)... ... ... The Visiting Nurse Association (VNA) of Somerset Hills is proud to host ... items from across the nation, this holiday-themed event will raise funds and awareness for ... The boutique will be open Saturday, November 4 (10:00 a.m. – 5:00 p.m.) ...
(Date:10/13/2017)... ... ... Global Healthcare Management’s 4th Annual Kids Fun Run brought out many kids this ... by Global Healthcare Management’s CEO, Jon Letko, is aimed at getting kids excited about ... ages; it is a non-competitive, non-timed event, which is all about having fun and ...
Breaking Medicine News(10 mins):
(Date:10/4/2017)... , Oct. 4, 2017  South Korean-based healthcare ... CPR training aide "cprCUBE" on Kickstarter. The device will ... during cardiac arrests with better efficiency compared to the ... offers real-time feedback on efficacy of the compression for ... campaign has a goal to raise $5,000. ...
(Date:10/4/2017)... , Oct. 4, 2017 ... single-use, self-contained, illuminating medical devices, today announced regulatory ... Health Surveillance Agency (or Agência Nacional de Vigilância ... first single-use, cordless surgical retractor with integrated LED ... optimal access, illumination and exposure of a tissue ...
(Date:10/2/2017)... Lilly and Company (NYSE: LLY ) will ... 2017 on Tuesday, October 24, 2017. Lilly will also ... investment community and media to further detail the company,s ... at 9 a.m. Eastern time. Investors, media and the ... conference call through a link that will be posted ...
Breaking Medicine Technology: