Results 51 to 60 of about 9,480,081 (415)
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Target detection is a critical task in interpreting aerial images. Small target detection, such as vehicles, is challenging. Different lighting conditions affect the accuracy of vehicle detection.
Yuanfeng Wu +4 more
doaj +1 more source
Proceedings of the National Academy of Sciences of the United States of America, 2021 Significance Multimodal imaging based on optics and ultrasound can provide guide images and complementary structural and functional information, thus improving the accuracy of medical diagnosis and treatment monitoring.
Jeongwoo Park +16 more
semanticscholar +1 more source
Two-Photon Interferometry for High-Resolution Imaging [PDF]
, 2000 We discuss advantages of using non-classical states of light for two aspects of optical imaging: creating of miniature images on photosensitive substrates, which constitutes the foundation for optical lithography, and imaging of micro objects.
BELFIELD K. D. +18 more
core +8 more sources
SPIE Proceedings, 2003 The SOAR Optical Imager (SOI) is the commissioning instrument for the 4.2-m SOAR telescope, which is sited on Cerro Pachon, and due for first light in April 2003. It is being built at Cerro Tololo Inter-American Observatory, and is one of a suite of first-light instruments being provided by the four SOAR partners (NOAO, Brazil, University of North ...
Walker, Alistair R. +9 more
openaire +4 more sources
Computational optical imaging with a photonic lantern [PDF]
Nature Communications, 2020 AbstractThe thin and flexible nature of optical fibres often makes them the ideal technology to view biological processes in-vivo, but current microendoscopic approaches are limited in spatial resolution. Here, we demonstrate a route to high resolution microendoscopy using a multicore fibre (MCF) with an adiabatic multimode-to-single-mode “photonic ...
Itandehui Gris-Sánchez +11 more
openaire +9 more sources
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 The attention mechanism is one of the most influential ideas in the deep learning community, which has shown excellent efficiency in various computer vision tasks.
Haotian Zhang +4 more
doaj +1 more source
Molecular imaging by optically-detected electron spin resonance of nitrogen-vacancies in nanodiamond [PDF]
Nano Lett 13 (2013) 1173-1178, 2012 Molecular imaging refers to a class of noninvasive biomedical imaging techniques with the sensitivity and specificity to image biochemical variations in-vivo. An ideal molecular imaging technique visualizes a biochemical target according to a range of criteria, including high spatial and temporal resolution, high contrast relative to non-targeted ...
arxiv +1 more source
Hyperbolic phonon-polaritons in boron nitride for near-field optical imaging and focusing [PDF]
Nature Communications, 2015 Hyperbolic materials exhibit sub-diffractional, highly directional, volume-confined polariton modes. Here we report that hyperbolic phonon polaritons allow for a flat slab of hexagonal boron nitride to enable exciting near-field optical applications ...
Peining Li +8 more
semanticscholar +1 more source
Next-generation in vivo optical imaging with short-wave infrared quantum dots
Nature Biomedical Engineering, 2017 For in vivo imaging, the short-wavelength infrared region (SWIR; 1,000–2,000 nm) provides several advantages over the visible and near-infrared regions: general lack of autofluorescence, low light absorption by blood and tissue, and reduced scattering ...
Oliver T. Bruns +23 more
semanticscholar +1 more source
Terahertz dynamic aperture imaging at stand-off distances using a Compressed Sensing protocol
, 2019 In this text, results of a 0.35 terahertz (THz) dynamic aperture imaging approach are presented. The experiments use an optical modulation approach and a single pixel detector at a stand-off imaging distance of approx 1 meter.
Augustin, Sven +3 more
core +1 more source