Results 31 to 40 of about 230,662 (251)
Boosting magnetic resonance imaging signal-to-noise ratio using magnetic metamaterials
Communications Physics, 2019 Magnetic resonance imaging (MRI) represents a mainstay among the diagnostic imaging tools in modern healthcare. Signal-to-noise ratio (SNR) represents a fundamental performance metric of MRI, the improvement of which may be translated into increased ...
G. Duan +3 more
semanticscholar +1 more source
Improving the signal-to-noise ratio of single-pixel imaging using digital microscanning.
Optics Express, 2016 Single-pixel cameras provide a means to perform imaging at wavelengths where pixelated detector arrays are expensive or limited. The image is reconstructed from measurements of the correlation between the scene and a series of masks.
Ming-jie Sun +4 more
semanticscholar +1 more source
Multiplane wave imaging increases signal-to-noise ratio in ultrafast ultrasound imaging
Physics in Medicine and Biology, 2015 Ultrafast imaging using plane or diverging waves has recently enabled new ultrasound imaging modes with improved sensitivity and very high frame rates.
E. Tiran +9 more
semanticscholar +1 more source
Sensors, 2022 The signal-to-noise ratio (SNR) is an important performance evaluation index of polarization spectral imaging remote sensors. The SNR-estimation method based on the existing remote sensor is not perfect.
Ying Zhang +5 more
doaj +1 more source
Signal-to-Noise Ratio Estimation in Passive Correlation-Based Imaging [PDF]
SIAM Journal on Imaging Sciences, 2013 We consider imaging with passive arrays of sensors using as illumination ambient noise sources. The first step for imaging under such circumstances is the computation of the cross correlations of the recorded signals, which have attracted a lot of attention recently because of their numerous applications in seismic imaging, volcano monitoring, and ...
Garnier, Josselin +3 more
openaire +3 more sources
Comparing signal‐to‐noise ratio for prostate imaging at 7T and 3T [PDF]
Journal of Magnetic Resonance Imaging, 2018 BackgroundIn MRI, the signal‐to‐noise ratio (SNR) theoretically increases with B0 field strength. However, because of attenuation of the radiofrequency (RF) fields at 7T, it is not certain if this SNR gain can be realized for prostate imaging.Purpose/HypothesisTo investigate the SNR gain in prostate imaging at 7T as compared with 3T.
Cornelis A. T. van den Berg +7 more
openaire +5 more sources
IEEE Photonics Journal, 2019 Photoacoustic tomography is a technique to reconstruct the image of light energy absorption distribution in tissues based on the detected photoacoustic signals. In recent years, this research field has been greatly developed, and its application range is
Meng Zhou +4 more
doaj +1 more source
An adaptive bitonic filtering based edge fusion algorithm for Gaussian denoising
International Journal of Cognitive Computing in Engineering, 2022 It is broadly recognized that conserving the essential geometrical features of an image is crucial while denoising it. To accomplish this aim, various denoising techniques have been represented in the literature.
Bhawna Goyal +3 more
doaj
Improving the Signal-to-Noise Ratio of Superresolution Imaging Based on Single-Pixel Camera
IEEE Photonics Journal, 2019 Based on the theories of single-pixel camera and compressed sensing image reconstruction, the sparse basis, the projection method of measurement matrix, and the signal reconstruction algorithm are optimized. First, for the sparse representation of image,
Ziran Wei +5 more
doaj +1 more source
Signal to Noise Ratio Analysis in Virtual Source Array Imaging [PDF]
SIAM Journal on Imaging Sciences, 2015 We consider correlation-based imaging of a reflector located on one side of a passive array where the medium is homogeneous.
Garnier, Josselin +3 more
openaire +3 more sources