Stereoscopic Imaging in Hypersonic Boundary Layers Using Planar Laser-Induced Fluorescence

This technique offers a more complete visualization of high-speed flowfields than standard imaging methods.

Stereoscopic time-resolved visualization of three-dimensional structures in a hypersonic flow was performed for the first time in NASA Langley Research Center’s 31-inch Mach 10 Air Tunnel. Nitric oxide (NO) was seeded into hypersonic boundary layer flows that were designed to transition from laminar to turbulent. A laser excitation and multiple-camera imaging scheme was used to obtain raw images containing three-dimensional spatial information. The images were processed in a computer visualization environment to provide stereoscopic image pairs that could be viewed several ways, including using the cross-eyed viewing method, with the aid of a stereoscope, as animated image pairs (i.e., wiggle stereoscopy), or as anaglyph images through conventional red/blue 3D glasses.

Posted in: Briefs, Imaging, Photonics, Computational fluid dynamics, Imaging, Imaging and visualization, Lasers, Imaging, Imaging and visualization, Lasers

Compact, Lightweight, Athermal, Nanocomposite Telescopes with Freeform Optics

Small space missions such as CubeSats frequently require telescopes with highly sophisticated optical systems that are also low in mass and cost. The very limited spacecraft volume and mass limits also preclude adjustments to maintain critical alignment with change in temperature. Existing systems, especially those that employ folded optical paths with freeform optics, are expensive to fabricate. The optics, and support and metering structures, are also heavy due to the use of high-density material such as glass, aluminum, or nickel.

Posted in: Briefs, Imaging, Optics, Photonics, Downsizing, Optics, Optics, Nanomaterials, Satellites

CoaXPress Frame Grabber

Responding to the need to create a cost-effective, high-speed interface to fully leverage CXP cameras, BitFlow (Woburn, MA) has introduced the Aon-CXP single link CoaXPress frame grabber. The Aon is powerful enough to support camera speeds up to 6.25 Gigabits/second, which is almost twice as fast as USB3 and over six times the speed of current offerings of GigE Vision. While capturing video at those speeds, it is simultaneously sending control commands, triggers and up to 13 W of power over a single piece of 75 Ohm coaxial cable.

To learn more, click here

Posted in: Products, Data Acquisition, Board-Level Electronics, Computers, Electronics & Computers, Imaging, Video

Scientists Find New Way to Image Solar Cells in 3-D

Next-generation solar cells made of super-thin films of semiconducting material hold promise because they’re relatively inexpensive and flexible enough to be applied just about anywhere. Researchers are working to dramatically increase the efficiency at which thin-film solar cells convert sunlight to electricity. But it’s a tough challenge, partly because a solar cell’s subsurface realm—where much of the energy-conversion action happens—is inaccessible to real-time, nondestructive imaging. It’s difficult to improve processes you can’t see.

Posted in: News, Imaging, Lasers & Laser Systems, Photonics

DIGITAL PATHOLOGY: A Primer for Microscope Camera Selection

Most pathologists today use digital systems within their practices and research projects to communicate, store data, and analyze images. Whether it’s within clinical, forensic, surgical, or other branches of pathology, communication and consultation among specialists is greatly improved by the use of digital systems and enables faster diagnosis for patients.

Posted in: White Papers, Imaging, Medical, Optics, Photonics

Optimizing Next-gen Machine Vision Platform To Enhance Automated Inspection

With machine vision’s development and growth in the Industry 4.0 environment, the higher computing performance becomes essential to acquire high resolution images at high speeds, and expanding FOV (field of view). The associated hardware must therefore significantly enhance reliability, to guarantee smooth operation of the production line. Read this white paper to know more about characteristics the next-gen machine vison platform need.

Posted in: White Papers, Imaging, Manufacturing & Prototyping, Automation, Robotics

Infrared Brings to Light Nanoscale Molecular Arrangement

Detailing the molecular makeup of materials – from solar cells to organic LEDs and transistors to medically important proteins – is not always a crystal-clear process. To understand how materials work at these microscopic scales and to better design materials to improve their function, it's necessary to know not only about their composition but also their molecular arrangement and microscopic imperfections.

Posted in: News, Imaging

New Catheter Lets Doctors See Inside Arteries

Removing plaque from clogged arteries is a common procedure that can save and improve lives. This treatment approach has been made safer and more effective with a high-tech catheter that allows cardiologists to see inside arteries for the first time, cutting out only the diseased tissue. Interventional cardiologists at Sulpizio Cardiovascular Center at UC San Diego Health are the first in the region to use this technology.

Posted in: News, Imaging

Mapping Marine Snow on Sea Floor

City-sized maps of terrain and life on the sea floor have revealed that drifts of "marine snow" on submarine hillsides act as a source of food to fuel a higher biomass of marine life than on flatter plains. This finding comes from research by scientists at the National Oceanography Centre (NOC) that may improve understanding of how hillside slopes and plateaus drive the distribution of marine life. The marine snow was quantified using machine vision, where an algorithm automatically detected the location and coverage in digital images.

Posted in: News, Imaging

Will virtual reality increase empathy?

This week's Question: According to a recent article in The Washington Post, a growing number of filmmakers, policymakers, researchers, human rights workers, and law enforcement officials are using virtual reality technology to make people feel as if they have experienced an event firsthand. Advocates say virtual reality can increase empathy, "transport" and immerse viewers within humanitarian crises around the world, and influence decision-making about issues ranging from policing to the environment. What do you think? Will virtual reality increase empathy?

Posted in: Question of the Week, Displays/Monitors/HMIs, Imaging, Video, Visualization Software

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