Spectral Classification and Change Detection for Hyperspectral Imaging (V1717)

This paper shows the Netherlands contribution to NATO SET-240 on Exploitation of Longwave Infrared Airborne Hyperspectral Data, that focusses on the detection of soil disturbances, buried objects, and nonburied (surface) objects. Together with other hyperspectral feasibility research on maritime target detection and machine learning. Hyperbolic...

In vivo subdiffuse scanning laser oximetry of the human retina

Scanning laser ophthalmoscopes (SLOs) have the potential to perform high speed, high contrast, functional imaging of the human retina for diagnosis and follow-up of retinal diseases. Commercial SLOs typically use a monochromatic laser source or a superluminescent diode for imaging. Multispectral SLOs using an array of laser sources for spectral...

Color filter arrays based on dielectric metasurface elements

Digital imaging has been steadily improving over the past decades and we are moving towards a wide use of multi- and hyperspectral cameras. A key component of such imaging systems are color filter arrays, which define the spectrum of light detected by each camera pixel. Hence, it is essential to develop a variable, robust and scalable way for...

Compact hyperspectral instrument for NO2 remote sensing

The impact of NO2 and other atmospheric trace gases on health and the environment is now acknowledged by governments around the world. The sources, both natural and anthropogenic, have been shown to affect the quality of life due to low air quality in densely populated areas. Consequently, the need for accurate global NO2 measurements with high...

First aircraft test results of a compact, low cost hyperspectral imager for earth observation from space

In recent years TNO has investigated and developed different innovative opto-mechanical designs to realize advanced spectrometers for space applications in a more compact and cost-effective manner. This offers multiple advantages: a compact instrument can be flown on a much smaller platform or as add-on on a larger platform; a low-cost...

Roll-to-roll suitable short-pulsed laser scribing of organic photovoltaics and close-to-process characterization

The proper long term operation of organic electronic devices like organic photovoltaics OPV depends on their resistance to environmental influences such as permeation of water vapor. Major efforts are spent to encapsulate OPV. State of the art is sandwich-like encapsulation between two ultra-barrier foils. Sandwich encapsulation faces two major...

High-grade, compact spectrometers for Earth observation from SmallSats

The market for nano-and microsatellites is developing rapidly. There is a strong focus on 2D imaging of the Earth's surface, with limited possibilities to obtain spectral information. More demanding applications, such as monitoring trace gases, aerosols or water quality still require advanced imaging instruments, which are large, heavy and...

Recycling of post-consumer glass: Energy savings, CO2 emission reduction, effects on glass quality and glass melting

This presentation shows the advantages of re-melting post-consumer glass, but also the potential risks of using contaminated cullet in the raw material batch of glass furnaces (e.g. container glass furnaces). As an example of potential advantages: increasing the cullet % in the batch of an efficient end-port fired regenerative container glass...

Hyperspectral Data Analysis and Visualisation

Electro-Optical (EO) imaging sensors are widely used for a range of tasks, e.g. for Target Acquisition (TA: detection, recognition and identification of (military) relevant objects) or visual search. These tasks can be performed by a human observer, by an algorithm (Automatic Target Recognition) or by both (Aided Target Recognition). In the past...

PDR status for TROPOMI, the sentinel 5 Precursor instrument for air quality and climate observations

The Tropospheric Monitoring Instrument (TROPOMI) is being developed for launch in 2014 on GMES Sentinel 5 Precursor satellite. Global Monitoring for Environment and Security (GMES) is a joint initiative of the European Community (EC) and of the European Space Agency (ESA). TROPOMI is a passive sun backscatter spectrograph using the ultraviolet...

HYBASE: HYperspectral BAnd SElection

Band selection is essential in the design of multispectral sensor systems. This paper describes the TNO hyperspectral band selection tool HYBASE. It calculates the optimum band positions given the number of bands and the width of the spectral bands. HYBASE is used to assess the minimum number of spectral bands that is required to get the best...

Optical characteristics of small surface targets, measured in the False Bay, South Africa; June 2007

During the False Bay trial (June 2007), the performance of a set of three optical sensors was tested against several small surface targets in a coastal area: a hyperspectral camera, a camera with a rotating polarization filter and a high resolution camera. One objective was the validation of a contrast and clutter model for the visual spectral...

TROPOMI, the solar backscatter satellite instrument for air quality and climate, heads towards detailed design

The Tropospheric Monitoring Instrument (TROPOMI) is currently planned for launch on ESA's Sentinel 5 precursor satellite in the time frame of 2014. TROPOMI is an ultraviolet-to-SWIR wavelengths imaging spectrograph that uses two-dimensional detectors to register both the spectrum and the swath perpendicular to the flight direction. The swath is...

HYBASE - HYperspectral BAnd SElection tool

Band selection is essential in the design of multispectral sensor systems. This paper describes the TNO hyperspectral band selection tool HYBASE. It calculates the optimum band positions given the number of bands and the width of the spectral bands. HYBASE is used to calculate the minimum number of spectral bands that is required to get the best...

From hyperspectral imaging to dedicated sensors

Hyper spectral imaging is a technique that obtains a two-dimensional image of a scene, while for each pixel a spectrum is recorded. Hyper spectral imaging systems can be very powerful at extracting information by using the spectral information in addition to the more conventional information extraction algorithms based on the spatial information...