road condition mapping with hyperspectral remote
... this HST is the high spatial resolution. Due to an onboard, integrated stabilization system the flight altitude can be very low with a GIFOV of about 0.5 m. This is quite an advantage over AVIRIS for detailed mapping of road conditions (Figure 7). One tradeoff is the narrow swath of only 40 m. Sever ...
... this HST is the high spatial resolution. Due to an onboard, integrated stabilization system the flight altitude can be very low with a GIFOV of about 0.5 m. This is quite an advantage over AVIRIS for detailed mapping of road conditions (Figure 7). One tradeoff is the narrow swath of only 40 m. Sever ...
A History of Imaging
... to improve image quality. Telescope lengths, for example, increased to accommodate long focal length objectives that increased magnification and minimized defects. Further, the limited examples of glass led Newton to believe (erroneously) that chromatic dispersion was the same in all glasses. He ther ...
... to improve image quality. Telescope lengths, for example, increased to accommodate long focal length objectives that increased magnification and minimized defects. Further, the limited examples of glass led Newton to believe (erroneously) that chromatic dispersion was the same in all glasses. He ther ...
2_Goodenough_IGARSS1..
... Geometric distortions (non-uniform distance and direction) caused by platform altitude, attitude (roll, pitch and yaw) and surface relief Traditional DEM orthorectification at fine resolutions introduce significant errors in tree canopy positions Accurate positioning is vital for high resoluti ...
... Geometric distortions (non-uniform distance and direction) caused by platform altitude, attitude (roll, pitch and yaw) and surface relief Traditional DEM orthorectification at fine resolutions introduce significant errors in tree canopy positions Accurate positioning is vital for high resoluti ...
26_IJFPS_March_2012_..
... of noise equivalent quanta to the actual number of exposure quanta from which the image was made (Martin, Sharp, & Sutton, 1999), which can also be viewed as the fraction of photons that are detected “correctly” (Prince & Links, 2006). Screen-films which are used in projection radiography systems ut ...
... of noise equivalent quanta to the actual number of exposure quanta from which the image was made (Martin, Sharp, & Sutton, 1999), which can also be viewed as the fraction of photons that are detected “correctly” (Prince & Links, 2006). Screen-films which are used in projection radiography systems ut ...
Wide-field extended-resolution fluorescence
... evanescent waves, which essentially carry the high spatial frequency information, thereby improving the imaging resolution. However, a limitation of this approach is that the detection must be done in the near-field [2]. Recent work demonstrated that far-field detection is possible with periodic cor ...
... evanescent waves, which essentially carry the high spatial frequency information, thereby improving the imaging resolution. However, a limitation of this approach is that the detection must be done in the near-field [2]. Recent work demonstrated that far-field detection is possible with periodic cor ...
High-speed spectral-domain optical coherence tomography at 1.3
... Previous clinical imaging studies conducted with time domain optical coherence tomography (TD-OCT) [1] have indicated that detection sensitivity of greater than 105 dB may be required to provide sufficient penetration depth for accurate diagnosis and quantitative evaluation of tissue properties [2]. ...
... Previous clinical imaging studies conducted with time domain optical coherence tomography (TD-OCT) [1] have indicated that detection sensitivity of greater than 105 dB may be required to provide sufficient penetration depth for accurate diagnosis and quantitative evaluation of tissue properties [2]. ...
Scanning Tunneling Microscope
... What an STM measures?------Local density of states Each plane represents a different value of the tip-sample V, and the lateral position on the plane gives the x,y position of the tip. Filled states are given in red. The plane at the Fermi energy (V=0) is shown in blue. ...
... What an STM measures?------Local density of states Each plane represents a different value of the tip-sample V, and the lateral position on the plane gives the x,y position of the tip. Filled states are given in red. The plane at the Fermi energy (V=0) is shown in blue. ...
Scanning Tunneling Microscope
... What an STM measures?------Local density of states Each plane represents a different value of the tip-sample V, and the lateral position on the plane gives the x,y position of the tip. Filled states are given in red. The plane at the Fermi energy (V=0) is shown in blue. ...
... What an STM measures?------Local density of states Each plane represents a different value of the tip-sample V, and the lateral position on the plane gives the x,y position of the tip. Filled states are given in red. The plane at the Fermi energy (V=0) is shown in blue. ...
report - CREATE project
... instead of 75 fs, centered at the same wavelength, we should obtain 2.5 fold higher signal. However reduced pulse duration is associated with increased bandwidth of the laser, thus dealing with the dispersion by the optical elements becomes more difficult. For such a short pulses as 30 fs the higher ...
... instead of 75 fs, centered at the same wavelength, we should obtain 2.5 fold higher signal. However reduced pulse duration is associated with increased bandwidth of the laser, thus dealing with the dispersion by the optical elements becomes more difficult. For such a short pulses as 30 fs the higher ...
Steady State Free Precession Imaging
... less sensitive to magnetic inhomogeneity, but some loss of SNR. 3) Spectral saturation – chemical shift-based approach better SNR, but more dependent on shimming. So, the amount of saturation may vary spatially if shimming isn’t ...
... less sensitive to magnetic inhomogeneity, but some loss of SNR. 3) Spectral saturation – chemical shift-based approach better SNR, but more dependent on shimming. So, the amount of saturation may vary spatially if shimming isn’t ...
Digital Radiography Image Parameters SNR, MTF, NPS, NEQ, DQE
... and therefore only requires half the amount of X-ray dose to produce an image with the same SNR. Hence, in theory, the higher the DQE of the detector the lower the patient exposure dose. Another general property of the DQE is that it increases with decreasing X-ray energy due to more efficient X-ray ...
... and therefore only requires half the amount of X-ray dose to produce an image with the same SNR. Hence, in theory, the higher the DQE of the detector the lower the patient exposure dose. Another general property of the DQE is that it increases with decreasing X-ray energy due to more efficient X-ray ...
Spectra and Atomic Structure
... Absorption can boost an electron to the second (or higher) excited state Two ways to decay: 1. to ground state ...
... Absorption can boost an electron to the second (or higher) excited state Two ways to decay: 1. to ground state ...
Tabletop nanometer extreme ultraviolet imaging in an
... about the sample that are in excellent agreement with atomic force microscopy (AFM) and scanning electron microscopy (SEM) images, and also removes all negative effects of nonuniform illumination of the sample or imperfect knowledge of the sample position as it is scanned [17]. The result is a gener ...
... about the sample that are in excellent agreement with atomic force microscopy (AFM) and scanning electron microscopy (SEM) images, and also removes all negative effects of nonuniform illumination of the sample or imperfect knowledge of the sample position as it is scanned [17]. The result is a gener ...
Advantages of FTIR spectroscopy
... spectrometers that utilized the Fourier transform (FT-IR). These second-generation spectrometers, with an integrated Michelson interferometer, provided some significant advantages compared to dispersive spectrometers. Today, almost every spectrometer used in mid-infrared spectroscopy is is of the Fo ...
... spectrometers that utilized the Fourier transform (FT-IR). These second-generation spectrometers, with an integrated Michelson interferometer, provided some significant advantages compared to dispersive spectrometers. Today, almost every spectrometer used in mid-infrared spectroscopy is is of the Fo ...
A very fast imaging FT spectrometer for on line process monitoring
... second) passive remote sensing chemical agent sensor has driven the Turbo FT to ever higher spectral scan rates. In addition, their sensors to be increasingly more of the imaging type, so as to identify areas of chemical contamination from longer standoff distances. On the commercial side, the same ...
... second) passive remote sensing chemical agent sensor has driven the Turbo FT to ever higher spectral scan rates. In addition, their sensors to be increasingly more of the imaging type, so as to identify areas of chemical contamination from longer standoff distances. On the commercial side, the same ...
What is Remote Sensing?
... Refers to the size of the smallest possible feature that can be detected as distinct from its surroundings ...
... Refers to the size of the smallest possible feature that can be detected as distinct from its surroundings ...
Roger`s Descriptions
... COURSE: OPTICS FOR IMAGING - SIMG xxx 1.1 One-quarter course: Four credit hours. 1.2 Three 50-minute lectures and one 3-hour lab per week. 1.3 Prerequisite: Credit in SPSP-313 (University Physics III) ...
... COURSE: OPTICS FOR IMAGING - SIMG xxx 1.1 One-quarter course: Four credit hours. 1.2 Three 50-minute lectures and one 3-hour lab per week. 1.3 Prerequisite: Credit in SPSP-313 (University Physics III) ...
High-resolution retinal microscopy using MEMS
... College of Engineering, Boston University The availability of precisely controllable micromachined deformable mirrors (µDMs) made using microelectromechanical (MEMS) systems technology has enabled rapid development of adaptive optics in several new applications. In this paper, the design and testing ...
... College of Engineering, Boston University The availability of precisely controllable micromachined deformable mirrors (µDMs) made using microelectromechanical (MEMS) systems technology has enabled rapid development of adaptive optics in several new applications. In this paper, the design and testing ...
High-precision, high-accuracy ultralong-range swept
... is the smallest increment of available IOL power. The required length measurement accuracy is 0.5%. We demonstrated that SS-OCT systems using VCSEL light sources provide a flexible platform for high-speed ultralong-range OCT imaging. The ability to adjust laser operating parameters to work within de ...
... is the smallest increment of available IOL power. The required length measurement accuracy is 0.5%. We demonstrated that SS-OCT systems using VCSEL light sources provide a flexible platform for high-speed ultralong-range OCT imaging. The ability to adjust laser operating parameters to work within de ...
PDF Link
... specific microscope. The same point sources in the same locations will not be resolved by the same microscope (that is, will appear as only one large spot) if the sources are instead emitting light that is coherent and in-phase. However, the two sources become fully ‘resolved’ when their emissions a ...
... specific microscope. The same point sources in the same locations will not be resolved by the same microscope (that is, will appear as only one large spot) if the sources are instead emitting light that is coherent and in-phase. However, the two sources become fully ‘resolved’ when their emissions a ...
Slide 1
... in the interaction region, and detection of the modulated optical field gives an indication of the strength of the AO interaction. We have previously demonstrated that a photorefractive crystal (PRC) based optical detection system can be used to detect the AO response generated by pulsed ultrasound ...
... in the interaction region, and detection of the modulated optical field gives an indication of the strength of the AO interaction. We have previously demonstrated that a photorefractive crystal (PRC) based optical detection system can be used to detect the AO response generated by pulsed ultrasound ...
2 - VITO
... variability, an Optimized Spectral Angle Mapper (OSAM) was developed consisting of two parts. Firstly an Optimal Spectral Library (OSL) is generated which preserves the spectral variability present within each ROI. This library can be considered as ‘optimal’ since it contains the spectra that classi ...
... variability, an Optimized Spectral Angle Mapper (OSAM) was developed consisting of two parts. Firstly an Optimal Spectral Library (OSL) is generated which preserves the spectral variability present within each ROI. This library can be considered as ‘optimal’ since it contains the spectra that classi ...
Linear Mixture Models, Full and Partial Unmixing in Multi
... expectation of which is minimized is often termed “energy,” hence the name CEM. For hyperspectral data these operations can be performed on a subset of orthogonally transformed data such as signal maximum autocorrelation factors, MAFs, or signal minimum noise fractions, MNFs, [33, 3, 9, 5, 19, 2, 27 ...
... expectation of which is minimized is often termed “energy,” hence the name CEM. For hyperspectral data these operations can be performed on a subset of orthogonally transformed data such as signal maximum autocorrelation factors, MAFs, or signal minimum noise fractions, MNFs, [33, 3, 9, 5, 19, 2, 27 ...
VNIR Reflectance Spectroscopy
... • Absorption features that occur in reflectance spectra are a sensitive indicator of mineralogy and chemical composition for a wide variety of materials • The investigation of the mineralogy and chemical composition of surfaces delivers insights into the origin and evolution of planetary bodies – e. ...
... • Absorption features that occur in reflectance spectra are a sensitive indicator of mineralogy and chemical composition for a wide variety of materials • The investigation of the mineralogy and chemical composition of surfaces delivers insights into the origin and evolution of planetary bodies – e. ...
Hyperspectral imaging
Hyperspectral imaging, like other spectral imaging, collects and processes information from across the electromagnetic spectrum. The goal of hyperspectral imaging is to obtain the spectrum for each pixel in the image of a scene, with the purpose of finding objects, identifying materials, or detecting processes.Much as the human eye sees visible light in three bands (red, green, and blue), spectral imaging divides the spectrum into many more bands. This technique of dividing images into bands can be extended beyond the visible. In hyperspectral imaging, the recorded spectra have fine wavelength resolution and cover a wide range of wavelengths.Engineers build hyperspectral sensors and processing systems for applications in astronomy, agriculture, biomedical imaging, geosciences, physics, and surveillance. Hyperspectral sensors look at objects using a vast portion of the electromagnetic spectrum. Certain objects leave unique 'fingerprints' in the electromagnetic spectrum. Known as spectral signatures, these 'fingerprints' enable identification of the materials that make up a scanned object. For example, a spectral signature for oil helps geologists find new oil fields.