Headwall Photonics Blog

We're Giving Drones a Good Name

Posted by Christopher Van Veen on Wed, Oct 07, 2015

Drones seem to be in the news for all the wrong reasons. The media reminds us that they're nothing but nuisances: peeking at people, crashing into stadiums, hovering over the White House, and causing airliners to take evasive maneuvers. The FAA in this country is taking an active stance on the safe operation of drones, and the topic is being explored elsewhere around the globe. What everyone recognizes is that it's a world full of both promise and uncertainty. Indeed, the automobile was born under the same set of circumstances!

Having just returned from a week-long conference in Reno, Nevada, my post today is meant to emphasize the good work drones can do. The biggest among them is precision agriculture, where a drone outfitted with the right instrumentation can hover over orchards and vineyards and spot telltale signs of diseases that aren't readily seen from the ground. Monitoring irrigation levels and fertilizer effectiveness are two other key applications, as are climatology, pipeline monitoring, and geology.

Two makers of UAVs present at the conference are Headwall customers. PrecisionHawk builds a fixed-wing system while ServiceDrones offers a multi-rotor craft. There are reasons for using either. The amount of room you have to take off and land is one consideration; the overall battery life (flight duration) is another; and payload capacity is a third. The key task is to match everything to the mission, which is why integration is so important.

All told, the packaged technology of drones and sensors allows researchers to 'see' the invisible and learn more about the environment. Primarily this is territory largely inaccessible by any other ground-based means, which puts the risk to humans (and airliners) at the lower end of the scale. The use of drones has exploded for two primary reasons. Chief among them is affordability, which positions them much more favorably compared with manned fixed-wing aircraft. Second is ease of use. Drones are now more 'mainstream' than ever, and their ability to carry reasonable instrumentation payloads allows them to do this kind of scientific 'remote sensing.'

Instruments such as hyperspectral sensors are getting smaller, lighter, and more affordable. With them, scientists can now unlock hidden secrets and spot trends by analyzing very detailed, data-rich images.  We are helping to create a 'new set of eyes' for the scientific community. The drones themselves become a vital 'delivery system,' and the pairing of these technologies is giving birth to the kind of conference such as the ASPRS Mapping event in Reno. It was a combination of test flying and presentations, with the flying happening in gorgeous Palomino Valley located about 35 miles north of Reno.

Through it all, safety was paramount during the flying demonstrations. FAA inspectors were with us every step of the way to make sure that all the programmed flight plans were adhered to. Each drone had 'N' registration numbers, as a regular aircraft would. This is serious business with huge upside potential for geologists, crop scientists, the petroleum industry, and for environmentalists. It pays to understand the regulations and work within them, because this whole business is a 'new frontier' for everyone. And while the term 'Drone' conjures up a rather negative image, the more proper description is, "Unmanned Airborne System," or 'UAS' for short. These truly are 'systems' because they pair a flying machine (either fixed-wing or multi-rotor) with instruments they carry.

And what kind of instruments? For precision agriculture, a hyperspectral sensor covering the Visible and Near-Infrared (VNIR) range of 400-1000nm will spot disease conditions on tree canopies. With entire economies depending on crops (hello, Florida citrus!), the ability to spot tree-borne diseases and other plant-stress situations is massively beneficial. First, the instruments are precise and can spot the 'invisible.' Second, the drones allow for the rapid and complete coverage of remote areas that might take days or weeks to map. And perhaps most telling, some disease conditions will only be visible from the top down rather than from the bottom up. An inspector on a ladder under a tree will likely miss something that the drone spots, and this can mean the difference between a bountiful harvest and a financial catastrophe. Any high-value crop (think citrus, wine grapes, pistachios, coffee beans, walnuts, etc.) needs this kind of imaging oversight. Our Nano-Hyperspec is extremely popular for this kind of work.

When it comes to airborne work, one of the most desired attributes of a hyperspectral sensor is a wide field of view. Simply put, the sensor needs to deliver crisp hyperspectral data at the edges of its field of view just as it would directly underneath the flight path. The wider and more sharp the field of view, the more efficient the flight path can be. And when it comes to drones, battery life determines the overall flight duration. So a hyperspectral sensor having an aberration-corrected wide field of view can cover more ground for a given flight envelope. More image data is thus collected for every flight, making the research project very efficient.

In addition to hyperspectral sensors, drones will also need a GPS to tie the incoming spectral data to its exact geographic location. Another frequently asked-for instrument is LiDAR (Light Detection and Ranging Sensor), which provides some elevation detail that is paired with the hyperspectral data. Obviously the combination of all these separate instruments makes for a payload that consumes valuable weight and space, and thus out of the realm of possibility for today's new breed of hand-launched UAVs. With that in mind, my company (Headwall Photonics, Inc.) takes time to engineer and 'integrate' the sensor so that it is as small and as light as possible. Combining the data storage inside the sensor is one way; direct-attaching the GPS is another. The connecting cables you don't need mean weight you don't have to lift!

Finally, conferences like the ASPRS event in Reno are places where people can learn. Understanding the challenges and potential integration pitfalls is what we at Headwall were there to convey, and our message was very well received. The mistake we all want to avoid is having users blinded by the promise of airborne hyperspectral imaging, dashing off and grabbing any affordable UAV and bolting instruments onto it. For one, such an approach is dangerously naive. Second, the time needed to integrate everything is practically always underestimated. And third, it becomes a very costly endeavor when the price of time is factored in.

At Headwall, although our business is the production of the industry's best hyperspectral imaging sensors, we understand integration issues better than anyone. We're here to help navigate the process and get the scientific research community in the air faster, doing all the good things 'drones' can do.

Tags: hyperspectral, Remote Sensing, Sensors, UAS, VNIR, UAV

Headwall's Field-of-View Calculator

Posted by Christopher Van Veen on Mon, Mar 17, 2014

When it comes to hyperspectral imaging, it isn’t always about the hardware. Before users even get to the stage of specifying a sensor instrument, they need to ask a few questions:

  • What do I want to look at?
  • How am I deploying the sensor?
  • What is the spectral range of what I’m looking at?
  • How far from the object will I be?

The answers to these questions will lead to an informed decision about the kind of sensor that’s best, the kind of lens it will need, and how small and light the sensor needs to be.  At Headwall, we’re helping customers sort through these questions and considerations every day. We make on-line tools available that make instrument specification easy. With the answers to a few simple questions, the overall application-specific design of a hyperspectral instrument is well within reach. This means quicker time-to-deploy for customers who have challenging scientific questions that need answers.

One of Headwall’s newest tools is the Field-of-View (FOV) calculator. This tool collects a few important user-defined parameters to arrive at several what-if scenarios. The first parameter is distance from lens to object. In an airborne application, the distance would likely be measured in meters. For lab-based or in-line deployment, it might only be centimeters.  The second parameter is the wavelength, which can be UV-VIS (380-825nm) all the way up to SWIR (950-2500 nm). Knowing the spectral signature of the item of interest will point you in the correct direction.

FOV resized 600

The calculator will take this information and combine it with choice of sensor and lens to arrive at useful data for the customer. In this case, we see that for the parameters and options chosen we are given the number of spatial and spectral channels (1004 and 335 respectively). We’re also given the linear and angular FOV, the instantaneous FOV, and the spectral resolution. In an airborne application, the linear FOV can be thought of as the flight swath. The wider the better, because the aircraft or UAV will be able to collect full hyperspectral information with fewer passes over the ground.


Spectral libraries are common starting points for defining where to look along the spectral range. The spectral signature for everything from plants and crops to minerals and petroleum is known or catalogued.  While everything has its own signature, the real strength of hyperspectral imaging is to discriminate and classify. So while the sensor can actually ‘see’ everything, it is tuned to look for things that may resonate at 900 nm or 1900 nm for example. A disease condition on a fruit tree may be impossible to detect by any visible means, but it will resonate quite clearly when seen with a hyperspectral sensor.

Customers come to Headwall regularly with certain ‘needs.’ A crop scientist may want to analyze the soil from an airborne UAV. Another may want to adopt hyperspectral imaging along a high-speed food processing line to see and remove foreign matter. A third may be a museum preservationist interested in understanding the artwork and artifacts under their care. But in all cases, the first question is: What do you want to see?


Tags: hyperspectral imaging, Headwall Photonics, Airborne, Sensors

Headwall Remote Sensing Capabilities Seen “Down Under”

Posted by David Bannon on Wed, Jul 31, 2013

melbourneThis past week, Headwall remote sensing team finished a productive week Down Under at the International Geoscience and Remote Sensing Symposium (IGARSS) in Melbourne, Australia.  The conference, organized by the IEEE, comprises a ‘Who’s Who’ across the global remote sensing community. But curiously absent were representatives from the United States, probably reflecting the topic du jour: sequestration. Imagine holding a geo-spatial and remote sensing conference and no one from NASA was able to attend?

From an international perspective, we observed tremendous interest from customers looking to gain spectral capability for their manned aircraft and also surprising interest from organizations looking to buy “all-inclusive” UAV configurations that include the Micro-Hyperspec imaging spectrometer, a GPS/INS unit, a lightweight IGARSS 2013 Boothembedded processor, and an suite of application software. This complete airborne package was a big hit at IGARSS because while users have good grasp on the benefits of airborne hyperspectral, they need help making it work in particular application.  Two very nice UAVs on display at IGARSS created a lot of buzz in the Headwall booth. Although Headwall doesn’t make the UAV platform, we make them do some pretty amazing things within the realm of hyperspectral remote sensing. That message came through loud and clear, as our stand at IGARSS was phenomenally busy from the start right through the end.

A bit further up in altitude were visitors interested in hyperspectral remote sensing from space. A major point of interest throughout the conference was a demonstrated need for cost effective, space-qualified hyperspectral sensor payloads.  With most of the world’s planned remote sensing missions being delayed for budget reasons, VNIR (380-1000nm) and SWIR (900-2500nm) space-qualified imagers are hot commodities. This is an area that Headwall Great Ocean Roaddeveloped over the last five years with its own space-qualified sensor payloads.  There was also strong focus from attendees on how satellite collaboration could be established among the world’s most notable remote sensing programs.  Japan’s ALOS-3 (2016 launch?), European ENMAP (2017 launch?), and NASA HYSPIRI mission (2023 launch?) represent three of several.

Even with all the activity at IGARSS, Headwall’s remote sensing team led by Kevin Didona, Principal Engineer at Headwall, also took some hyperspectral scans of rock wall formations at some very scenic places along the Great Ocean Road on the South Coast of Australia.

As Headwall has developed extensive experience in the application of hyperspectral sensors specifically designed for UAVs, please drop us a line or give is a call if we can provide some information to meet the objectives of your remote sensing research.

Email us at [email protected]

Visit us at www.HeadwallPhotonics.com

Or call us at Tel: +1 978 353 4003

Tags: hyperspectral imaging, hyperspectral, Headwall Photonics, Airborne, Remote Sensing, Sensors, Micro Hyperspec, UAS, SWIR, Sensing, VNIR, Satellites, UAV

Hyperspectral and Remote Sensing the focus at EARSeL!

Posted by Christopher Van Veen on Wed, Apr 03, 2013

Headwall's exhibition schedule kicks into high gear this month. First up is our appearance at the 8th Imaging Spectrometry Workshop, sponsored by The European Association of Remote Sensing Laboratories (EARSeL). This event gives visitors the opportunity to understand how hyperspectral imaging can be a valuable scientific tool for the research community. Precision agriculture, mining & minerals, petroleum pipeline surveillance, and disaster mitigation are just a few application areas and more are uncovered all the time as the technology becomes more affordable and easier to use.

EARSeL blog photoHeadwall is seeing a meteoric rise in the use of small and light UAVs for remote sensing activities. SkyJib (from Droidworx) and the Mk II by Winehawk Labs are two such examples, and you’ll see both at EARSeL. The more nimble these hand-launched airframes get, the smaller and lighter the sensors themselves need to be. Headwall’s collaborative engineering approach gives customers a fast path to success with lightweight solutions that also include integrated application software and a GPS/INS. The beauty of Headwall’s Micro Hyperspec sensor is that it is purpose-engineered for flight. Besides being rugged, it also provides outstanding spatial and spectral resolution in the NIR (900nm-1700nm) and VNIR (380nm-1000nm) ranges while also having a very wide field of view. A wide field-of-view means a more efficient the flight path. In other words, the UAVs can cover more territory by collecting precise spectral detail not only directly below but also off to the sides.

While small, hand-launched UAVs are perfect for a wide range of scientific exploration activities, fixed-wing aircraft ranging from the Cessna to the Twin Otter are also used as a platform for hyperspectral sensors. Headwall’s High-Efficiency Hyperspec sensor covers the NIR (900nm - 1700nm) and SWIR   (950nm - 2500nm) spectral ranges. Aberration-corrected and completely athermalized, it provides the highest optical performance and diffraction efficiency of greater than 90%. We’ll be showing this at EARSeL also.

Later in April…beginning on the 3oth actually…Headwall will be at the Defense, Security + Sensing show in Baltimore. We’ll be in Booth 1830 at the Baltimore Convention Center for DSS, which is quickly becoming the go-to show for all things related to surveillance and reconnaissance. While the interest here is largely airborne, visitors also want to know about ground-based and hand-held hyperspectral sensors. Headwall’s flagship hand-held sensor is Hyperspec RECON, which won the R&D100 Award in 2012. This portable instrument covers the VNIR (380nm-1000 nm) spectral range and can render a 6-inch sq. hyperspectral scene at a distance of over a kilometer. Best of all, it’s easy to use and can be ‘tuned’ by loading spectral libraries via an integrated SD slot. Hyperspec RECON represents a very flexible reconnaissance platform that can also be used in a stationary manner (mounted to a mast or a vehicle, for example).

While Hyperspec RECON and its handheld ingenuity is a groundbreaking achievement, many applications need instruments that can either point-and-stare’ or ‘pan-and-tilt.’ Headwall has sensors for both types of deployment that exhibit the very same aberration-corrected concentric imaging performance as their airborne counterparts. Since hyperspectral imaging depends on movement to occur, the instruments are motorized and fully engineered for the tasks they are challenged with.

Headwall will be at several exhibitions and conferences throughout 2013 aside from the two described here. These events will serve as excellent venues as we come out with new products and enhanced versions of existing ones.



Tags: hyperspectral imaging, hyperspectral, Headwall Photonics, Airborne, DSS, Remote Sensing, Sensors, Micro Hyperspec, Sensing, UAV, ALAVA Ingenieros

Resource Exploration Using Hyperspectral Imaging

Posted by Christopher Van Veen on Wed, Dec 19, 2012

Headwall utilizes hyperspectral sensing technology as an essential industrial inspection platform and has made this technology increasingly valuable across a wider spectrum of commercial applications and most notably in the oil & gas industry.  Companies in the petro-chemical industry focus much of their financial capital and effort on efficient pipeline distribution, refinery operations, and environmental monitoring.  Not only for exploration, but also to keep to keep their refining and distribution infrastructure safe.

hyperspectral analysisSo how can hyperspectral sensors help?  The lessons and knowledge gained from the remote sensing applications are directly applicable to the challenges faced by oil & gas companies as very remote and harsh territories are managed for energy production.  The data-rich imagery produced by a airborne and ground-based hyperspectral sensor can provide answers to some of the most pressing questions:

  • Are pipelines being properly monitored for structural integrity and vegetation encroachment?
  • Are pipelines leaking products such as methane?
  • Is there environmental damage that cannot readily be observed?
  • Does a particular area hold exploration value?

In practically every case, these questions are posed with respect to some of the most remote and desolate territory around. The upper reaches of Canada, Siberia, and within the Arctic Circle to name just three.  It’s practically impossible to simply drive over this rugged ice and permafrost terrain, which is why companies in the petro-chemical industry invest so heavily in airborne assets such as fixed-wing aircraft and UAVs as well as invest in satellite-based remote sensing data.

PipelineHyperspectral sensors measure the intensity of solar energy reflected from materials over hundreds of wavelengths from the visible-near infrared (VNIR) to the long wave infrared (LWIR) spectral region. They can record visible light (comprised of relatively short wavelengths such as blue, green, and red) as well as longer, near-infrared, and short wave-infrared light. Reflected light is collected into picture elements (pixels) by flying the imaging sensor over terrain. The reflected visible and infrared light is subdivided into 100 to 200+ discrete wavelength bands within each pixel.

Headwall has developed a leading position in the manufacture and deployment of small, lightweight hyperspectral sensors that are specifically designed for the small, low flying UAVs being deployed. Not only are the sensors small but they generate high resolution spectral and spatial imagery.  The patented, aberration-corrected design of the Micro-Hyperspec sensor allows UAVs to make fewer passes over a certain geographical area while eliminating image aberrations.

Crude oil can be ‘seen’ by hyperspectral sensors operating in the visible/near-infrared spectral bands. A phenomenon known as ‘micro-leakage’ yields hydrocarbon components in the surface soil and water, which the sensors can detect. There is a correlation between ‘micro-leakage’ and the probability of an oil or gas reservoir; detecting the presence of hydrocarbon is a technical means of making that correlation. Doing so from a UAV means a much more efficient collection of useful data as the sensor can be designed to ‘discriminate’ and ‘see’ precisely what geologists are hoping to see based on the spectral signatures of interest.

Disaster mitigationOther useful deployments of hyperspectral include looking at the state of vegetation stress near oil and gas pipelines. With legislation such as California’s “cap & trade” regulations being implemented, managing pipeline content and distribution network integrity carries financial implications for the producers.  With this requirement, the detection of methane from pipeline leaks becomes critical.  With pipelines several thousand miles long, airborne analysis is the only real way to collect actionable data rapidly and with some frequency.

Finally, oil and gas exploration companies are using hyperspectral sensors as a means of environmentally monitoring.  This is very important as environmental changes are often much noticeable utilizing hyperspectral sensor technology to identify spectral anomalies.

In the situation of a spill, hyperspectral sensing can be invaluable in monitoring and prioritizing clean-up efforts. Over the course of time, the sensors can report on trends…both positively and negatively. Again, the ability of hyperspectral sensors to discriminate means more meaningful, actionable data delivered from a cost-effective sensor platform such as Headwall’s Hyperspec imaging sensors.

Mineral mappingWhile the petroleum industry sees value in airborne hyperspectral sensing, so do companies in the minerals/mining industry. Because the cost to explore is prohibitive, innovation at the ‘front end’ means better exploration efficiency. The ability to distill large geographical areas into smaller land packages using airborne hyperspectral sensing means that the more costly assessments can be done where airborne sensing suggests a high probability of success exists.

During the exploration process, hyperspectral sensing can identify the presence of certain minerals such as iron ore and can also ‘grade’ them with a high degree of precision. A weathered environment can also hide the presence of valuable mineral deposits from normal explorative techniques, while hyperspectral sensing can unmask them. This mineral map for the Yeelirrie district of Australia demonstrates the ability of hyperspectral imaging to identify mineral assemblages in the presence of intense weathering. This particular map is indicative of calcrete-hosted Uranium.



Tags: hyperspectral imaging, hyperspectral, Airborne, Remote Sensing, Sensors, Sensing

Remote Sensing: All Eyes on Munich

Posted by Christopher Van Veen on Fri, Jul 20, 2012

The IEEE is an esteemed organization with top-notch events held worldwide. These events draw experts from across industry, government and education.

One of these events is happening next week, in Munich, Germany. The IEEE's International Geoscience and Remote Sensing Symposium (IGARSS) will probably see its biggest attendance ever, as the evolution of unmanned aerial vehicles (UAVs) melds with needs of the remote sensing community. Headwall Photonics will be in booth #18.

IGARSS 2012Much of what scientists want to analyze is best done from above. This holds true for oceanography, atmospheric research, precision agriculture, minerals and mining, and forestry management. Now that commercial UAVs are becoming more affordable and regulations governing their use more ‘mainstream,’ the door is wide open for a fascinating amount of quality research helped along by these small, pilotless aircraft.

Hyperspectral sensors represent a highly desired piece of precision instrumentation carried aloft by UAVs. Why? Because they can extract a tremendous amount of data based on the spectral makeup of what is within the field of view. What the human eye—or even infrared—cannot see, hyperspectral sensors can. Small, lightweight, and extremely precise, Headwall’s Micro Hyperspec is favored for its ability to offer several attractive capabilities. First is its tall slit, which gives the sensor a wide field of view. The wider the field of view, the more precise the hyperspectral data is from a given altitude. Looking down Hyperspectral imaging from UAVsfrom above, UAVs can make fewer passes over a plot of land if the resolution to either side of the flight path is very wide. In short, more territory can be covered in less time.

Another highly desired characteristic is spatial and spectral resolution, which determines how faithful the hyperspectral data is. The beauty of a hyperspectral sensor is that it can delineate what it ‘sees’ with a tremendous degree of resolution. For example, higher resolution can mean the difference between simply distinguishing disease conditions and determining what those diseases are. Or, determining good soil conditions from bad.

While affordable UAVs are all the rage at present, the beauty of hyperspectral imaging is that instruments can be made small and rugged to fit specific payload requirements. 'Size, Weight & Power' (referred to as 'SWaP) describes the continuous desire to make payloads as small, lightweight, and as power-efficient as possible. These characteristics hold true for any airborne vehicle aside from a UAV, whether a fixed-wing aircraft, a high-altitude reconnaissance plane, or a satellite. Headwall Photonics has hyperspectral instruments deployed successfully in all these platforms.



Tags: hyperspectral imaging, hyperspectral, Headwall Photonics, Airborne, Remote Sensing, Sensors, Sensing, Satellites, UAV, agriculture

Hyperspectral Imaging - Next Generation Machine Vision Platform for Food Safety and Quality

Posted by David Bannon on Tue, Jun 26, 2012

Bosoon Park, author of this blog entry, works as an Agricultural Engineer on behalf of the USDA in Georgia. He has done extensive research on hyperspectral and Raman imaging as it applies to food inspection and agriculture. Author of numerous published papers on the subject, Bosoon will be co-presenting a discussion on hyperspectral imaging at the annual conference of the American Society of Agricultural and Biological Engineers to be held in Dallas July 30 through August 2.

USDA At USDA, our work revolves around making sure that the foods we harvest and eat are safe, high quality, and healthy. Our mission is twofold: ensuring and improving the safety of food and feed, and ensuring and improving the quality and economic value of food and crops.

There are very important inspection steps between ‘farm’ and ‘fork,and the USDA invests considerable time looking at new technologies that can help. Hyperspectral & Raman imaging (both imaging spectroscopy techniques) can provide valuable inspection data based on the chemical composition of agricultural products that traditional machine vision systems cannot provide. 

During the past decade, USDA has worked with companies such as Headwall Photonics to develop hyperspectral technologies for in-line food safety inspection. Our work focuses on contaminant detection during in-line processing, which the Hyperspec Inspector allows us to do. Our researchers are expanding hyperspectral imaging technology to rapidly detect foodborne pathogens at a microscopic level.  Hyperspectral imaging has tremendous potential for the food industry in terms of safety inspection and quality control by analyzing spatial and spectral characteristics of agricultural products.  We are also exploring handheld hyperspectral instruments fully integrated with operating software for field use.

Raman spectrometers will also detect foodborne pathogens since their scattering phenomena respond very well to particular laser-lighting sources. USDA researchers have proved the concept to identify bacterial species and foodborne bacterial serotypes with surface-enhanced Raman scattering (SERS). This is an emerging area of focused research for improved food safety.

In an effort to educate and inform, several of us from USDA are preparing a short course on ‘hyperspectral imaging’ at the upcoming American Society of Agricultural and Biological Engineers (ASABE) conference July 30-August 2 in Dallas. Thanks to help from Headwall Photonics in commercializing and economizing the technology, we’re able to research and test hyperspectral and Raman instruments so that they can become mainstream across food-processing industries ranging from poultry to specialty crops.

Tags: hyperspectral imaging, hyperspectral, Sensors, SWIR, food processing, agriculture, Raman, USDA, plant phenotyping, Raman imaging

Headwall Photonics: In Good Company

Posted by Christopher Van Veen on Wed, Jun 20, 2012

They say, "You're judged by the company you keep..." And with that, we're very proud to have been chosen as a 2012 R&D Award recipient from R&D Magazine. We nominated our Hyperspec RECON hyperspectral sensor because it pulls together cutting-edge spectral imaging technologies and embodies the very essence of innovation that the award competition was RECON RD 100 talldesigned to foster. An independent judging panel and the editors of R&D Magazine obviously agreed, and now Hyperspec RECON proudly sits as one of the world's most technologically significant products developed over the past year.

So, what exactly is Hyperspec RECON and why do we believe it attracted the attention of the judges? The product is a very sensitive, precise hyperspectral sensor that operates in the VNIR (380nm - 1000 nm) spectral range. We developed Hyperspec RECON initially for the U.S. Army so that they would have a brand-new forward reconnaissance asset to deploy on the battlefield. Packaged small, light and robust, Hyperspec RECON will allow a soldier to render a 6-inch by 6-inch hyperspectral scene at a distance of over a mile. Every material has its own spectral signature, and Hyperspec RECON is able to discern what it 'sees' with a high degree of precision, sensitivity, and selectivity. Operator controls are minimal, and spectral libraries are loaded onto a removable SD card.

The foundational technology that made Hyperspec RECON a winning product is shared across all of Headwall's hyperspectral sensors. Application areas include remote sensing, airborne surveillance, high-speed inspection lines, forensics, medical and biotechnology, and precision agriculture. Across them all, Headwall instruments provide very high spatial and spectral resolution and high-efficiency diffractive optics.

Tags: hyperspectral imaging, hyperspectral, Headwall Photonics, Defense, Sensors, Security, diffraction gratings

Hyperspectral Imaging & Agriculture: A Perfect Match

Posted by Christopher Van Veen on Wed, May 02, 2012

Spectral imaging and agriculture seems to be a perfect match. Technologies and techniques such as hyperspectral in-line inspection and Raman imaging instrumentation are well suited to very high-speed processing environments such as those found in agricultural processing plants for meat, poultry, and specialty crops.

USDAHeadwall recently had the opportunity to meet with USDA Deputy Secretary Kathleen Merrigan at the Washington DC offices of the USDA.  As stated by Dr. Merrigan, a very high priority for the USDA are issues pertaining to improved food safety and quality all within an environment of challenging fiscal alternatives.  Given the introduction of the Food Safety Modernization Act and USDA-led initiatives such as the HAACP-Based Inspection Pilot (also known as HIMP), there is an ever-growing industry requirement for high-speed machine vision instruments that are capable of supporting food safety and food quality standards accurately and cost-effectively.

Hyperspec InspectorHeadwall has a unique research and development relationship with the USDA whereby Headwall develops hyperspectral instrumentation specifically for in-line inspection in agriculture applications.  These represent very harsh environments, and having a stable spectral imaging platform that addresses multiple spectral ranges is very important for critical processing and inspection applications.  One of these is Hyperspec Inspector (shown), which is a complete hyperspectral imaging solution meant precisely for this kind of industrial environment. Strong collaboration and joint research with the USDA has strongly positioned Headwall’s technology as a proven and cost-effective alternative for food processors.

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Tags: hyperspectral imaging, hyperspectral, Headwall Photonics, Sensors, agriculture

Surveying the Land Below: Hyperspectral Sensors go Airborne

Posted by Christopher Van Veen on Wed, Mar 14, 2012

Remote sensing is a very important application and perhaps the 'killer app' for hyperspectral imaging technology, particularly when it comes to airborne scientific techniques. With traditional roots in research, Headwall’s airborne hyperspectral sensors are considered an industry-standard research tool and have been routinely utilized for the study of such topics as climate change, environmental mapping and monitoring, biodiversity research, and studies of the effects of carbon emissions on the environment.
Headwall’s experience is that it often takes approximately 10 years for technology to roll out of the military/defense markets and be ready for commercial applications. One particular market note is the use of Headwall’s hyperspectral sensors for commercial remote sensing applications. This is proving to be a very large and significant market. For example, one of Headwall’s customers is VineView, a commercial airborne company located in California with a focus on providing precision agriculture information and aerial imagery to more than 800 vineyards in the western United States. Dr. Matthew Staid, President of VineView Scientific Aerial Imaging, is a leader in the utilization of hyperspectral imaging for the management of 'high-value crops.'  His company provides airborne remote sensing services to the winegrape industry consisting of hyperspectral, thermal, and infrared sensing data for precision farming and profitable agricultural management of vineyards.
VineViewVineView’s sensor needs are focused in two key areas – very high spatial resolution coupled with extremely fast data processing.  One key attribute of hyperspectral imaging is the amount of spectral and spatial data collected. To capitalize on the inherent value of hyperspectral data requires an ability to rapidly process all this data into a geo-rectified data set. Airborne hyperspectral solutions require high performance, aberration-corrected sensors as well as hyperspectral data-processing units to collect and 'package' this data.  These rapid data-acquisition capabilities allow VineView to expand aerial services beyond the winegrape industry and into areas such as citrus production, tree nuts, and cotton.
With the ability to 'see' beyond the visible spectrum of 380nm to 780nm, Headwall’s hyperspectral imagers are readily available and optimized for many different spectral regions to a base of worldwide customers. One common configuration deployed by a number of remote sensing customers is the use of a Hyperspec VNIR sensor and a Hyperspec SWIR sensor to cover the broad spectrum of 380 to 2500 nm.
Tags: Headwall Photonics, Airborne, Remote Sensing, Sensors, VineView