Fast wide-field Raman spectroscopic imaging based on multi-channel narrow-band imaging and Wiener estimation

2018 ◽  
Author(s):  
Quan Liu ◽  
Shuo Chen ◽  
Clint Perlaki ◽  
Yeu Cian Yoo
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Spectroscopic Imaging ◽  
Wide Field ◽  
Raman Spectroscopic ◽  
Wiener Estimation

Fast wide-field Raman spectroscopic imaging based on simultaneous multi-channel image acquisition and Wiener estimation

2016 ◽  
Vol 41 (12) ◽  
pp. 2783 ◽  
Author(s):  
Dong Wei ◽  
Shuo Chen ◽  
Yi Hong Ong ◽  
Clint Perlaki ◽  
Quan Liu
Keyword(s):  
Image Acquisition ◽  
Spectroscopic Imaging ◽  
Wide Field ◽  
Raman Spectroscopic ◽  
Wiener Estimation ◽  
Channel Image

scholarly journals Cosmic Infrared Background ExpeRiment (CIBER): A probe of Extragalactic Background Light from reionization

2011 ◽  
Vol 7 (S284) ◽  
pp. 482-488
Author(s):  
Asantha Cooray ◽  
Jamie Bock ◽  
Mitsunobu Kawada ◽  
Brian Keating ◽  
Andrew Lange ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Wide Field ◽  
Extragalactic Background Light ◽  
Imaging Spectrometer ◽  
Zodiacal Cloud ◽  
Spectroscopy Experiment ◽  
Infrared Background ◽  
Cosmic Infrared Background ◽  
Imaging And Spectroscopy

AbstractThe Cosmic Infrared Background ExpeRiment (CIBER) is a rocket-borne absolute photometry imaging and spectroscopy experiment optimized to detect signatures of first-light galaxies present during reionization in the unresolved IR background. CIBER-I consists of a wide-field two-color camera for fluctuation measurements, a low-resolution absolute spectrometer for absolute EBL measurements, and a narrow-band imaging spectrometer to measure and correct scattered emission from the foreground zodiacal cloud. CIBER-I was successfully flown in February 2009 and July 2010 and four more flights are planned by 2014, including an upgrade (CIBER-II). We propose, after several additional flights of CIBER-I, an improved CIBER-II camera consisting of a wide-field 30 cm imager operating in 4 bands between 0.5 and 2.1 microns. It is designed for a high significance detection of unresolved IR background fluctuations at the minimum level necessary for reionization. With a FOV 50 to 2000 times larger than existing IR instruments on satellites, CIBER-II will carry out the definitive study to establish the surface density of sources responsible for reionization.

scholarly journals Wide-field Raman spectroscopic imaging with frequency modulation based spatially encoded light illumination

AIP Advances ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 095012
Author(s):  
Shenghan Ren ◽  
Tianyu Yan ◽  
Lin Wang ◽  
Nan Wang ◽  
Jimin Liang ◽  
...  
Keyword(s):  
Frequency Modulation ◽  
Spectroscopic Imaging ◽  
Light Illumination ◽  
Wide Field ◽  
Raman Spectroscopic

Recent Advances in Spontaneous Raman Spectroscopic Imaging: Instrumentation and Applications

2020 ◽  
Vol 27 (36) ◽  
pp. 6188-6207
Author(s):  
Nan Wang ◽  
Honghao Cao ◽  
Lin Wang ◽  
Feng Ren ◽  
Qi Zeng ◽  
...  
Keyword(s):  
Medicinal Chemistry ◽  
Spectroscopic Imaging ◽  
Chemical Imaging ◽  
High Spectral Resolution ◽  
Chemical Information ◽  
Wide Field ◽  
Scanning Method ◽  
Raman Spectroscopic ◽  
Recent Advances ◽  
Line Scanning

Background: Spectroscopic imaging based on the spontaneous Raman scattering effects can provide unique fingerprint information in relation to the vibration bands of molecules. Due to its advantages of high chemical specificity, non-invasive detection capability, low sensitivity to water, and no special sample pretreatment, Raman Spectroscopic Imaging (RSI) has become an invaluable tool in the field of biomedicine and medicinal chemistry. Methods: There are three methods to implement RSI, including point scanning, line scanning and wide-field RSI. Point-scanning can achieve two-and three-dimensional imaging of target samples. High spectral resolution, full spectral range and confocal features render this technique highly attractive. However, point scanning based RSI is a time-consuming process that can take several hours to map a small area. Line scanning RSI is an extension of point scanning method, with an imaging speed being 300-600 times faster. In the wide-field RSI, the laser illuminates the entire region of interest directly and all the images then collected for analysis. In general, it enables more accurate chemical imaging at faster speeds. Results: This review focuses on the recent advances in RSI, with particular emphasis on the latest developments on instrumentation and the related applications in biomedicine and medicinal chemistry. Finally, we prospect the development trend of RSI as well as its potential to translation from bench to bedside. Conclusion: RSI is a powerful technique that provides unique chemical information, with a great potential in the fields of biomedicine and medicinal chemistry.

scholarly journals Searching for planetary nebulae at the Galactic halo via J-PAS

2015 ◽  
Vol 11 (S317) ◽  
pp. 304-305
Author(s):  
Denise R. Gonçalves ◽  
T. Aparício-Villegas ◽  
S. Akras ◽  
A. Cortesi ◽  
M. Borges-Fernandes ◽  
...  
Keyword(s):  
Galactic Halo ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Broad Band ◽  
Planetary Nebulae ◽  
Accelerating Universe ◽  
Wide Field ◽  
The Galaxy ◽  
First Results ◽  
Chemical Conditions

AbstractThe Javalambre-Physics of the Accelerating Universe Astrophysical Survey (J-PAS) is a narrow-band imaging, very wide field cosmological survey. It will last 5 years and will observe 8500 sq. deg. of the sky. There will be 54 contiguous narrow-band filters of 145Å FWHM, from 3,500 to 10,000Å. Two broad-band filters will be added at the extremes, UV and IR, plus the 3–g, r, and i– SDSS filters. Thus, J-PAS can be an important tool to search for new planetary nebulae (PNe) at the halo, increasing their numbers, because only 14 of them have been convincingly identified in the literature. Halo PNe are able to reveal precious information for the study of stellar evolution and the early chemical conditions of the Galaxy. The characteristic low continuum and intense emission lines of PNe make them good objects to be searched by J-PAS. Though covering a significantly smaller sky area, data from the ALHAMBRA survey were used to test our J-PAS strategy to search for PNe. Our first results are shown in this contribution.

scholarly journals Narrow band imaging: A wide field of possibilities

2007 ◽  
Vol 13 (1) ◽  
pp. 1 ◽  
Author(s):  
JF Rey ◽  
K Kuznetsov ◽  
R Lambert
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Wide Field

scholarly journals Advances in endoscopic imaging: Advantages and limitations

2012 ◽  
Vol 03 (S 05) ◽  
pp. 007-012 ◽  
Author(s):  
Rupa Banerjee ◽  
D. Nageshwar Reddy
Keyword(s):  
Tissue Characterization ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Current Status ◽  
Wide Field ◽  
Current Clinical Practice ◽  
Advanced Imaging ◽  
Endoscopic Imaging ◽  
White Light Endoscopy ◽  
Autofluorescence Endoscopy

AbstractEndoscopic imaging is emerging beyond the confines of traditional white light endoscopy. There is a plethora of advanced imaging technologies which aim to improve visualization of the vascular network and surface texture of the mucosa and thereby improve tissue characterization, differentiation, and diagnosis. These include the wide field technologies like chromoendoscopy, narrow band imaging and autofluorescence endoscopy and point enhancement or virtual histology technologies like endocytoscopy and confocal endomicroscopy. This review attempts to define the current status of these newer technologies and the advantages and limitations in current clinical practice.

scholarly journals Wide field-of-view study of the Eagle Nebula with the Fourier transform imaging spectrograph SITELLE at CFHT

2020 ◽  
Vol 635 ◽  
pp. A111
Author(s):  
N. Flagey ◽  
A. F. McLeod ◽  
L. Aguilar ◽  
S. Prunet
Keyword(s):  
Fourier Transform ◽  
Mass Loss ◽  
Gas Phase ◽  
Loss Rate ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Mass Loss Rate ◽  
Field Of View ◽  
Emission Lines ◽  
Wide Field

Context. We present the very first wide-field, 11′ by 11′, optical spectral mapping of M 16, one of the most famous star-forming regions in the Galaxy. The data were acquired with the new imaging Fourier transform spectrograph SITELLE mounted on the Canada-France-Hawaii Telescope (CFHT). We obtained three spectral cubes with a resolving power of 10 000 (SN1 filter), 1500 (SN2 filter) and 600 (SN3 filter), centered on the iconic Pillars of Creation and the HH 216 flow, covering the main optical nebular emission lines, namely [O II]λ3726,29 (SN1), Hβ, [O III]λ4959,5007 (SN2), [N II]λ6548,84, Hα, and [S II]λ6717,31 (SN3). Aims. We validate the performance, calibration, and data reduction of SITELLE, and analyze the structures in the large field-of-view in terms of their kinematics and nebular emission. Methods. We compared the SITELLE data to MUSE integral field observations and other spectroscopic and narrow-band imaging data to validate the performance of SITELLE. We computed gas-phase metallicities via the strong-line method, performed a pixel-by-pixel fit to the main emission lines to derive kinematics of the ionized gas, computed the mass-loss rate of the Eastern pillar (also known as the Spire), and combined the SITELLE data with near-infrared narrow-band imaging to characterize the HH 216 flow. Results. The comparison with previously published fluxes demonstrates very good agreement. We disentangle the dependence of the gas-phase metallicities (derived via abundance-tracing line ratios) on the degree of ionization and obtain metallicities that are in excellent agreement with the literature. We confirm the bipolar structure of HH 216, find evidence for episodic accretion from the source of the flow, and identify its likely driving source. We compute the mass-loss rate Ṁ of the Spire pillar on the East side of the H II region and find excellent agreement with the correlation between the mass-loss rate and the ionizing photon flux from the nearby cluster NGC 6611.

NARROW BAND IMAGING COMO MÉTODO ALTERNATIVO PARA LA DETECCIÓN Y CARACTERIZACIÓN DE LOS FOCOS DE CRIPTAS ABERRANTES

Endoscopy ◽  
2011 ◽  
Vol 43 (12) ◽  
Author(s):  
M López-Cerón ◽  
M Jimeno ◽  
C Rodríguez de Miguel ◽  
M Zabalza ◽  
V Alonso-Espinaco ◽  
...  
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging

Narrow band imaging (NBI) erleichtert die Detektion heterotoper Magenschleimhaut im zervikalen Ösophagus (inlet patch)

2013 ◽  
Vol 26 (01) ◽  
Author(s):  
S Al-Mammari ◽  
U Selvarajah ◽  
JE East ◽  
AA Bailey ◽  
B Braden
Keyword(s):  
Narrow Band ◽  
Narrow Band Imaging ◽  
Inlet Patch
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