Results 271 to 280 of about 19,300 (299)
Some of the next articles are maybe not open access.
Physics-based processing for terahertz reflection spectroscopy and imaging
SPIE Proceedings, 2010The spectra obtained from Terahertz (THz) reflection imaging can be distorted by scattering from rough interfaces, layers, and granular inclusions. Since the facets of the object being imaged are not generally aligned normal to the THz beam, the received signal is produced from diffuse scattering, which can be appreciably lower in signal strength than ...
L. M. Zurk +3 more
openaire +1 more source
Reflection Image Spectroscopy across the Andean subduction zone
Tectonophysics, 2009Abstract This paper presents new insights into the South American subduction zone from reprocessed seismic images. We applied a 3D Kirchhoff prestack depth migration scheme to data sets containing different narrow frequency ranges in order to extract additional details from seismic reflection images.
Yoon, M. +3 more
openaire +3 more sources
Reflectance imaging spectroscopy: possible aid in the clinical diagnosis of melanoma
SPIE Proceedings, 1995Reflectance spectrophotometry allows an objective evaluation of surface colors and it has been proposed as a tool to discriminate cutaneous melanoma from other pigmented cutaneous lesions. In order to improve reflectance spectral analysis of moles, a novel spectrophotometric system has been developed, based on the use of a CCD camera provided with a ...
Stefano Tomatis +8 more
openaire +1 more source
Wide range UV irradiation system for imaging reflection spectroscopy
Image Sensing Technologies: Materials, Devices, Systems, and Applications V, 2018Reflection spectroscopy is a promising measuring principle to get measurement data of surface signatures from objects and materials. A large field of applications, in inline or outline testing tasks, can be handled with it. The investigation deals with investigations regarding development of a broadband UV radiation source and the integration in a ...
Gunther Notni +2 more
openaire +1 more source
Nondestructive assessment of daguerreotype image quality by diffuse reflectance spectroscopy
Studies in Conservation, 1984Abstract The characteristic optical properties of daguerreotypes make it difficult to assess changes in their appearance due to aging or treatment solely on the basis of photographic records. A nondestructive method for monitoring these changes using reflectance spectroscopy is described.
M. Susan Barger +2 more
openaire +1 more source
Imaging Standoff Detection of Explosives by Diffuse Reflectance IR Laser Spectroscopy
2012In this work we demonstrate standoff detection of traces of explosives using mid-infrared laser spectroscopy. We apply active laser illumination and use an infrared camera for collection of the diffusely backscattered laser radiation. The key component of the system is an external cavity quantum cascade. Different numerical hyperspectral image analysis
Frank Fuchs +7 more
openaire +1 more source
Lasers in Surgery and Medicine, 2010
AbstractBackground and ObjectiveMost women with early stage breast cancer have the option of breast conserving therapy, which involves a partial mastectomy for removal of the primary tumor, usually followed by radiotherapy. The presence of tumor at or near the margin is strongly correlated with the risk of local tumor recurrence, so there is a need for
Matthew D, Keller +6 more
openaire +2 more sources
AbstractBackground and ObjectiveMost women with early stage breast cancer have the option of breast conserving therapy, which involves a partial mastectomy for removal of the primary tumor, usually followed by radiotherapy. The presence of tumor at or near the margin is strongly correlated with the risk of local tumor recurrence, so there is a need for
Matthew D, Keller +6 more
openaire +2 more sources
In Vivo Micro-Raman Spectroscopy of the Skin with Reflectance Confocal Imaging Guidance
ECS Meeting Abstracts, 2010Abstract not Available.
Hequn Wang +5 more
openaire +1 more source
Metrology and biomedical applications for terahertz reflection spectroscopy and imaging
2015Terahertz (1012Hz) radiation typically refers to a band of electromagnetic waves with the frequency between 0.1 to 10 THz which is non-ionizing. In this work, we refer to it as THz light rather than THz radiation to avoid the negative associations with the word ‘radiation’.
openaire +2 more sources
Journal of the Optical Society of America B, 2009
We have developed an objective for ultraviolet imaging and spectroscopy under cryogenic conditions. The objective was made of a single piece of silica with two spherical mirror surfaces. The pair of mirrors works as a reflecting objective for the optical rays that travel inside the silica.
Masanori Fujiwara +2 more
openaire +1 more source
We have developed an objective for ultraviolet imaging and spectroscopy under cryogenic conditions. The objective was made of a single piece of silica with two spherical mirror surfaces. The pair of mirrors works as a reflecting objective for the optical rays that travel inside the silica.
Masanori Fujiwara +2 more
openaire +1 more source