Zobrazeno 1 - 10
of 408
pro vyhledávání: '"Arridge, Simon R"'
We present an open-source differentiable acoustic simulator, j-Wave, which can solve time-varying and time-harmonic acoustic problems. It supports automatic differentiation, which is a program transformation technique that has many applications, espe
Externí odkaz:
http://arxiv.org/abs/2207.01499
Differentiable simulators are an emerging concept with applications in several fields, from reinforcement learning to optimal control. Their distinguishing feature is the ability to calculate analytic gradients with respect to the input parameters. L
Externí odkaz:
http://arxiv.org/abs/2111.05218
Deep learning-based image reconstruction approaches have demonstrated impressive empirical performance in many imaging modalities. These approaches usually require a large amount of high-quality paired training data, which is often not available in m
Externí odkaz:
http://arxiv.org/abs/2107.02572
Diffuse optical tomography (DOT) utilises near-infrared light for imaging spatially distributed optical parameters, typically the absorption and scattering coefficients. The image reconstruction problem of DOT is an ill-posed inverse problem, due to
Externí odkaz:
http://arxiv.org/abs/2104.09579
Autor:
Pan, Bolin, Arridge, Simon R., Lucka, Felix, Cox, Ben T., Huynh, Nam, Beard, Paul C., Zhang, Edward Z., Betcke, Marta M.
Curvelet frame is of special significance for photoacoustic tomography (PAT) due to its sparsifying and microlocalisation properties. We derive a one-to-one map between wavefront directions in image and data spaces in PAT which suggests near equivale
Externí odkaz:
http://arxiv.org/abs/2011.13080
Publikováno v:
Journal of Computational Physics, 2021, Volume 441
Transcranial ultrasound therapy is increasingly used for the non-invasive treatment of brain disorders. However, conventional numerical wave solvers are currently too computationally expensive to be used online during treatments to predict the acoust
Externí odkaz:
http://arxiv.org/abs/2010.15761
Publikováno v:
Journal of Computational Physics, vol. 384, pp. 376-382, May 2019
The radiative transport equation accurately describes light transport in participating media such as biological tissues, though analytic solutions are known only for simple geometries. We present a pseudospectral technique to efficiently compute nume
Externí odkaz:
http://arxiv.org/abs/1801.06364
Autor:
Betcke, Marta M., Cox, Ben T., Huynh, Nam, Zhang, Edward Z., Beard, Paul C., Arridge, Simon R.
We present a method for the recovery of compressively sensed acoustic fields using patterned, instead of point-by-point, detection. From a limited number of such compressed measurements, we propose to reconstruct the field on the sensor plane in each
Externí odkaz:
http://arxiv.org/abs/1609.02763
Photoacoustic Tomography (PAT) is an emerging biomedical "imaging from coupled physics" technique, in which the image contrast is due to optical absorption, but the information is carried to the surface of the tissue as ultrasound pulses. Many algori
Externí odkaz:
http://arxiv.org/abs/1602.02027
Publikováno v:
In Journal of Computational Physics 15 September 2021 441
