DVSNet: deep variance‐stabilised network robust to spatially variant characteristics in imaging
Sign Up to like & getrecommendations! Published in 2019 at "Electronics Letters"
DOI: 10.1049/el.2019.0102
Abstract: In real imaging systems, unwanted noises or artefacts can be caused by an image reconstruction error during photon-to-digital conversion. The generated noises typically tend to have spatially variant characteristics in an acquired image due to… read more here.
Keywords: deep variance; variant characteristics; variance stabilised; stabilised network ... See more keywords
Experimental validation of estimated spatially variant radioisotope-specific point spread functions using published positron range simulations and fluorine-18 measurements.
Sign Up to like & getrecommendations! Published in 2018 at "Physics in medicine and biology"
DOI: 10.1088/1361-6560/aaecb6
Abstract: In this work we compare spatially variant radioisotope-specific point spread functions (PSFs) derived from published positron range data with measured data using a high resolution research tomograph (HRRT). Spatially variant PSFs were measured on a… read more here.
Keywords: radioisotope specific; published positron; range; variant radioisotope ... See more keywords
Spatially Variant Sidelobe Suppression for Linear Array MIMO SAR 3-D Imaging
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2022.3142104
Abstract: Linear array (LA) multiple-input–multiple-output (MIMO) synthetic aperture radar (SAR) has the capacity of achieving 3-D images in a single pass. If processed by matched filtering-based linear 3-D imaging, sidelobe suppression is often required for image… read more here.
Keywords: sidelobe suppression; suppression; linear array; spatially variant ... See more keywords
Benefits of Using a Spatially-Variant Penalty Strength With Anatomical Priors in PET Reconstruction
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Medical Imaging"
DOI: 10.1109/tmi.2019.2913889
Abstract: In this study, we explore the use of a spatially-variant penalty strength in penalized image reconstruction using anatomical priors to reduce the dependence of lesion contrast on surrounding activity and lesion location. This work builds… read more here.
Keywords: reconstruction; penalty; variant penalty; penalty strength ... See more keywords
Photoacoustic Tomography Image Restoration With Measured Spatially Variant Point Spread Functions
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Medical Imaging"
DOI: 10.1109/tmi.2021.3077022
Abstract: The spatial resolution of photoacoustic tomography (PAT) can be characterized by the point spread function (PSF) of the imaging system. Due to the tomographic detection geometry, the PAT image degradation model could be generally described… read more here.
Keywords: photoacoustic tomography; psfs; image restoration; image ... See more keywords
Learning Spatially Variant Linear Representation Models for Joint Filtering.
Sign Up to like & getrecommendations! Published in 2021 at "IEEE transactions on pattern analysis and machine intelligence"
DOI: 10.1109/tpami.2021.3102575
Abstract: Joint filtering mainly uses an additional guidance image as a prior and transfers its structures to the target image in the filtering process. Different from existing approaches that rely on local linear models or hand-designed… read more here.
Keywords: representation; variant linear; linear representation; image ... See more keywords
Spatially Variant Ultrasound Attenuation Mapping Using a Regularized Linear Least-Squares Approach
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"
DOI: 10.1109/tuffc.2022.3157949
Abstract: Quantitative ultrasound methods aim to estimate the acoustic properties of the underlying medium, such as the attenuation and backscatter coefficients, and have applications in various areas including tissue characterization. In practice, tissue heterogeneity makes the… read more here.
Keywords: variant ultrasound; linear least; attenuation; ultrasound attenuation ... See more keywords
Programmable spatially variant single-pixel imaging based on compressive sensing
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Electronic Imaging"
DOI: 10.1117/1.jei.30.2.021004
Abstract: Abstract. Single-pixel camera is developed to mitigate the constraints faced by the conventional cameras especially in invisible wavelengths and low light conditions. Nyquist–Shannon theorem requires as many measurements as the image pixels to reconstruct images… read more here.
Keywords: compressive sensing; image; single pixel; spatially variant ... See more keywords
Diffusive Leakage Through Existing and/or Induced Microfractures in the Caprock of CO2 Storage System
Sign Up to like & getrecommendations! Published in 2023 at "SPE Journal"
DOI: 10.2118/215816-pa
Abstract: Safe sequestration of CO2 in subsurface formations requires a caprock that inhibits the unwanted flow of the stored fluids. However, the preexisting fractures and the induced fractures initiated by overpressure and thermal stresses may act… read more here.
Keywords: caprock; pressure; monitoring; permeability ... See more keywords