Ultrasound Imaging From Sparse RF Samples Using System Point Spread Functions
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"
DOI: 10.1109/tuffc.2017.2772916
Abstract: Upcoming phased-array 2-D sensors will soon enable fast high-definition 3-D ultrasound imaging. Currently, the communication of raw radio-frequency (RF) channel data from the probe to the computer for digital beamforming is a bottleneck. For reducing… read more here.
Keywords: system; ultrasound imaging; spread functions; imaging sparse ... See more keywords
Asymmetries in adaptive optics point spread functions
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Astronomical Telescopes, Instruments, and Systems"
DOI: 10.1117/1.jatis.5.4.049003
Abstract: An explanation for the origin of asymmetry along the preferential axis of the PSF of an AO system is developed. When phase errors from high altitude turbulence scintillate due to Fresnel propagation, wavefront amplitude errors… read more here.
Keywords: spread functions; optics; point spread; asymmetries adaptive ... See more keywords
Transformation of point spread functions on an individual pixel scale.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.409626
Abstract: In some types of imaging systems, such as imaging spectrometers, the spectral and geometric pixel properties like center wavelength, center angle, response shape and resolution change rapidly between adjacent pixels. Image transformation techniques are required… read more here.
Keywords: transformation point; spread functions; transformation; individual pixel ... See more keywords
Snapshot volumetric imaging with engineered point-spread functions.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.465113
Abstract: The biological world involves intracellular and intercellular interactions that occur at high speed, at multiple scales and in three dimensions. Acquiring 3D images, however, typically requires a compromise in either spatial or temporal resolution compared… read more here.
Keywords: spread functions; microscopy; engineered point; point spread ... See more keywords
Half-ring point spread functions.
Sign Up to like & getrecommendations! Published in 2020 at "Optics letters"
DOI: 10.1364/ol.376860
Abstract: We applied point spread function engineering to design an optimized diffuser producing half-ring irradiance patterns satisfying two objectives: reduced peak irradiance in the focal plane, and high fidelity of the reconstructed image. Applications of these… read more here.
Keywords: spread functions; point spread; ring point; half ring ... See more keywords