Imaging

Robot’s Speed-of-Light Communication Could Protect You From Danger

Cornell University researchers are developing a system to enable teams of robots to share information as they move around, and if necessary, interpret what they see. This would allow the robots to conduct surveillance as a single entity with many eyes. Beyond surveillance, the new technology could enable teams of robots to relieve humans of dangerous jobs such as disposing of landmines, cleaning up after a nuclear meltdown or surveying the damage after a flood or hurricane. The project, called “Convolutional-Features Analysis and Control for Mobile Visual Scene Perception,” is supported by a four-year, $1.7 million grant from the U.S. Office of Naval Research.

Posted in: News, Defense, Machine Vision, Visualization Software, Optics, Robotics
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Imaging Detonations of Explosives

An effort has been made within the US Army Research Laboratory (ARL) to extract quantitative information on explosive performance from high-speed imaging of explosions. Explosive fireball surface temperatures are measured using imaging pyrometry (2-color 2-camera imaging pyrometer; full-color single-camera imaging pyrometer). Framing cameras are synchronized with pulsed laser illumination to measure fireball/shock expansion velocities, enabling calculation of peak air-shock pressures. Multicamera filtering at different wavelengths enables visualization of light emission by some reactant species participating in energy release during an explosion. Measurement of incident and reflected shock velocities is used to calculate shock energy on a target.

Posted in: Briefs, Aerospace, Imaging, Imaging, Thermodynamics, Defense industry, Missiles
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Terahertz (THz) Radar: A Solution For Degraded Visibility Environments (DVE)

An accurate view of the physical world is frequently vital. For example, rotary wing aircraft pilots must have knowledge of the terrain in order to safely fly their aircraft. Therefore, systems capable of generating images of the environment of sufficient quality to facilitate the decision process are necessary. The product of such a system is illustrated in Figure 1.

Posted in: Briefs, Aerospace, Imaging, Cartography, Imaging, Radar, Terrain
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Creating the Future: A Better Way to Map Terrain

Mark Skoog, an aerospace engineer at NASA's Armstrong Flight Research Center, led the development of new software that stores terrain data in a more efficient and accurate way. The achievement, Skoog says, opens the prospect of anyone – yes, anyone – being able to fly.

Posted in: News, News, Aerospace, Imaging, Sensors
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How NASA Tracks the Asteroids Flying by Earth

On Wednesday, April 19, an asteroid missed Earth by 1.1 million miles – a distance closer than you might think. This week, Tech Briefs spoke with NASA’s Planetary Defense Officer about the efforts behind tracking this type of flyby.

Posted in: News, News, Aeronautics, Imaging
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Fragment Tracking Gives Insights Into What Happens In Explosions

A bang and a swirl of dust from detonating 9 pounds of plastic explosive in the desert signaled the beginning of tests that — thanks to advances in high-speed cameras, imaging techniques and computer modeling — will help Sandia National Laboratories researchers study fragmenting explosives in ways that weren’t possible before.

Posted in: News, Defense, Cameras, Imaging, Visualization Software
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InGaAs Imaging Sensor

New Imaging Technologies (Verrières le Buisson, France) introduces the NSC1401, a new analog wide dynamic range InGaAs sensor series in 320x256 pixels (QVGA). The NSC1401 uses a new generation of ROIC with 320x256 pixels at 25um pitch coupled to an InGaAs retina that operates in WDR mode and global shutter. The spectral response range goes from 900nm to 1700nm. The analog front end is designed to achieve extremely low input noise and ultra-fast response time down to 200ns for applications such as active imaging. The sensor operates both in linear integration mode and in log response. The NSC1401 can operate without TEC within an ambient temperature range from -40°C to 70°C.

Posted in: Products, News, Cameras, Imaging, Data Acquisition, Detectors, Sensors
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Magnetic Field Lines Made Visible in 3-D and Real Time

Scientists at the Fraunhofer Institute have developed a high-resolution magnetic line camera to measure magnetic fields in real time, which is particularly useful for quality assurance during the manufacture of magnets. Read more at http://articles.sae.org/13706.

Posted in: Articles, News, Aerospace, Defense, Cameras, Manufacturing & Prototyping, Measuring Instruments
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Camera to SWIR Imaging

A clip-on system from UTC Aerospace Systems converts a camera to a day/night short wave IR (SWIR) imaging system. The Sensors Unlimited Warrior C2S lightweight, field-ready module and covert laser illuminator locks into the front of a Canon EOS 5D camera (Mark II and Mark III models) to provide operators with SWIR imaging capabilities on the battlefield. The system enables identification quality SWIR imagery, even in total darkness. More detail at http://articles.sae.org/13458.

Posted in: Products, Aerospace, Defense, Cameras, Imaging
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