Results 261 to 270 of about 607,674 (294)
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Spatial Resolution in NMR Imaging
IEEE Transactions on Medical Imaging, 1984NMR imaging is used as an example of how spatial resolution can be improved in a signal-to-noise (S/N) limited situation. The NMR imaging process consists of two components-generating the NMR signal and localizing it in space. This paper will show that spatial resolution not only aids in identifying small structures, but improves the detectability of ...
L E, Crooks +5 more
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High spatial resolution schlieren photography
Applied Optics, 1977Some geometrical optical considerations for attaining spatial resolution of about 100 microM in a photographic schlieren experiment are presented. The topics of astigmatism, coma, and spherical aberration are considered briefly. Special emphasis is directed to diffraction effects in a single-mirror schlieren instrument. A method for estimating the size
J W, Hosch, J P, Walters
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Spatial resolution in visual memory
Psychonomic Bulletin & Review, 2014Representations in visual short-term memory are considered to contain relatively elaborated information on object structure. Conversely, representations in earlier stages of the visual hierarchy are thought to be dominated by a sensory-based, feed-forward buildup of information.
Asaf, Ben-Shalom, Tzvi, Ganel
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Spatial Resolution in Digital Mammography
Investigative Radiology, 1993Digital acquisition systems currently available limit spatial resolution in digital mammography to roughly 0.1 mm/pixel. The objective of this study is to determine if high-quality mammography is possible at this resolution.The influence of spatial resolution on diagnostic quality was investigated by comparing observer performance on film to that on ...
N, Karssemeijer +2 more
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Spatial resolution of the galago
Vision Research, 1986The spatial vision of two adult galagos (Galago crassicaudatus) was assessed using a two choice discrimination task to determine their contrast sensitivity. Both contrast sensitivity functions exhibited low and high spatial frequency attenuation with the peak sensitivity at 1%.
A, Langston, V A, Casagrande, R, Fox
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Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium, 2002
This method consists of two parts: extraction of the high spatial resolution from high spatial resolution visible and near-infrared images, reconstruction of the high resolution image from a low resolution image using extracted high resolution spatial information.
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This method consists of two parts: extraction of the high spatial resolution from high spatial resolution visible and near-infrared images, reconstruction of the high resolution image from a low resolution image using extracted high resolution spatial information.
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A broadband, high-resolution spatial heterodyne spectrometer
Physica Scripta, 2008Design and performance parameters for a broadband, high-resolution spatial heterodyne spectrometer (SHS) are reported. The Mark 1 SHS achieves more than a factor of 5 in continuous wavenumber coverage with a design resolving power in the hundreds of thousands.
James E, Lawler +3 more
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Bubble sizing with a high spatial resolution
IEEE 1988 Ultrasonics Symposium Proceedings., 1990The authors propose a technique that allows them to size bubbles with the same accuracy as with the double-frequency method and to locate them with the same range resolution as with the pulsed Doppler velocimeter. They demonstrate that the signal scattered by the bubble insonified by a high-frequency pulsed ultrasonic field and a low-frequency pumping ...
D, Cathignol +3 more
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Spatial Proteomics towards cellular Resolution
Expert Review of ProteomicsSpatial biology is an emerging interdisciplinary field facilitating biological discoveries through the use of spatial omics technologies. Recent advancements in spatial transcriptomics, spatial genomics (e.g. genetic mutations and epigenetic marks), multiplexed immunofluorescence, and spatial metabolomics/lipidomics have enabled high-resolution spatial
Yumi Kwon +3 more
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Sensors and Actuators B: Chemical, 1998
Abstract The spatial resolution, sensitivity, and accuracy are required for light addressable potentiometric sensor (LAPS). The purpose of this work is to provide an approach for the high spatial resolution of the LAPS. The novel LAPS devices were developed and fabricated with ultra-thin Si films on transparent substrates. The 0.5 μm Si film was made
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Abstract The spatial resolution, sensitivity, and accuracy are required for light addressable potentiometric sensor (LAPS). The purpose of this work is to provide an approach for the high spatial resolution of the LAPS. The novel LAPS devices were developed and fabricated with ultra-thin Si films on transparent substrates. The 0.5 μm Si film was made
openaire +1 more source