نتایج جستجو برای: optical images

تعداد نتایج: 511332  

1999
S. M. Simkin S. J. Tingay

We present a variety of new imaging and kinematic data for the double–lobed radio galaxy Pictor A. The new optical data include HST continuum and [OIII], emission–line images (at a resolution of 25 – 100 mas) and ground-based imaging and spectroscopy (at a resolution of ∼ 1.5). The ground–based images show Hα filaments and loops which extend to the N and W of the optical core. The radio continu...

Journal: :Journal of biomedical optics 2011
Adam Q Bauer Ralph E Nothdurft Todd N Erpelding Lihong V Wang Joseph P Culver

The specificity of molecular and functional photoacoustic (PA) images depends on the accuracy of the photoacoustic absorption spectroscopy. The PA signal is proportional to the product of the optical absorption coefficient and local light fluence; quantitative PA measurements of the optical absorption coefficient therefore require an accurate estimation of optical fluence. Light-modeling aided ...

1997
H. J. A. Röttgering

Hubble Space Telescope images are presented of a sample of 28 3CR radio galaxies with redshifts in the range 0.6 < z < 1.8, together with maps at comparable angular resolution of their radio structure, taken using the Very Large Array. Infrared images of the fields, taken with the United Kingdom InfraRed Telescope, are also presented. The optical images display a spectacular range of structures...

B. Zakeri I. Kalantari

Polarimetric Synthetic Aperture Radar (Pol.-SAR) allows us to implement the recognition and classification of radar targets. This article investigates the arrangement of scatterers by SAR data and proposes a new Look-up Table of Region (LTR). This look-up table is based on the combination of (entropy H/Anisotropy A) and (Anisotropy A/scattering mechanism α), which has not been reported up now. ...

Journal: :Applied optics 2007
Olivier Jacquin Samuel Heidmann Eric Lacot Olivier Hugon

We propose a new optical architecture for the laser optical feedback imaging (LOFI) technique which makes it possible to avoid the adverse effect of the optical parasitic backscattering introduced by all the optical interfaces located between the laser source and the studied object. This proposed setup needs no specific or complex alignment, which is why we can consider the proposed setup to be...

2010
Chao Zhou Yihong Wang Aaron D. Aguirre Tsung-Han Tsai David W. Cohen James L. Connolly James G. Fujimoto

We evaluate the feasibility of optical coherence tomography (OCT) and optical coherence microscopy (OCM) for imaging of benign and malignant thyroid lesions ex vivo using intrinsic optical contrast. Thirty four thyroid gland specimens were imaged from 17 patients, covering a spectrum of pathology, ranging from normal thyroid to neoplasia and benign disease. The integrated OCT and OCM imaging sy...

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