The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A hyperspectral and thermal imaging system have been used to acquire hyperspectral data and thermal images from the surface of galvanized steel parts. After heating the parts in an oven, heat maps have been partitioned into hot (red) and cold (blue) regions as relative representation of heat distribution, to correlate the spectral signatures from hyperspectral data to the hot and cold areas. Three...
Although smaller arteries have been imaged and well characterized, 3D imaging of larger arteries is more challenging due to the thickness of the walls preventing light penetration throughout. We investigated the use of single-photon confocal microscopy as a tool to create 3D images of cross sections of arterial walls to analyze their structural arrangement; 3D visualization of elastin and collagen...
Seagrasses are an integral part of the marine ecosystem, and can provide information about their environment based on their surface content. In particular, epiphytes and epifauna on seagrass blades are of interest to scientists. Empirical mode decomposition is applied to hyperspectral images obtained from seagrasses to separate hyperspectral data into component modes, and then to segment and classify...
Ocean energy is a well-invested renewable energy resource. Although proven technologies for energy generation from the ocean exist, most of the developed systems are yet to be combined with storage devices for later use. In this paper, three different energy conversion projects are described with prototypes for generating electricity from the ocean waves, currents and tides. Each project builds on...
A hyperspectral imaging system has been used to acquire hyperspectral data representing various combinations of three pure algal mixtures in liquid media. Geometric and linear spectral unmixing methods have been applied to identify the ratiometric combinations of the algae in the mixtures. For the geometric method, two local spectral slopes have been identified as spectral features. Average feature...
In this paper, a laboratory-based hyperspectral imaging system is used to acquire hyperspectral data cubes from different algae samples of known mixtures. The data are obtained under controlled and repeatable conditions. Hyperspectral image processing is complicated by the size of the corresponding datasets so hyperspectral image pre-processing techniques such as dimensionality reduction are necessary...
Hyperspectral imaging relies on the optical properties of materials which absorb or scatter light at different wavelengths. To obtain repeatable results from a hyperspectral or any other imaging system, the system's spectral response must be characterized using optical standards against the light source used. Light sources vary in their spectral properties and their performance over time. Differences...
There is significant interest in hyperspectral image data in multiple disciplines. Laboratory-based hyperspectral imaging systems support research on samples ranging from plants and agricultural products to cell cultures, algae, coral, metals, and other media of interest. In most traditional laboratory settings, the user selects the data acquisition parameters and controls the instrument in the laboratory...
Real-time eye and iris tracking is important for handsoff gaze-based password entry, instrument control by paraplegic patients, Internet user studies, as well as homeland security applications. In this project, a smart camera, LabVIEW and vision software tools are utilized to generate eye detection and tracking algorithms. The algorithms are uploaded to the smart camera for on-board image processing...
Recently, there has been a massive push in the research community towards green or renewable energies, specifically for electrical power generation. Fossil fuels are losing their popularity due to the associated environmental damage and hazards, and green energies are gaining momentum as significant energy resources. This paper presents a novel system and method for converting the power of open ocean...
With many current scientific studies pointing to global warming and climate changes caused by greenhouse gases, there is an ever increasing societal push for renewable environmentally friendly green technologies to help reduce greenhouse gas emissions resulting from fossil fuel consumption. Government policy plays a key role in the development and wide-scale implementation of green technology. Many...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.