Ellipsoidal electrogastrographic forward modelling.

Ellipsoidal topographic potential – new solutions for spectral forward 5 gravity modelling of topography with respect to a reference ellipsoid

Layer - based modelling of the Earth ’ s gravitational potential up 1 to 10 km - scale in spherical harmonics in spherical and ellipsoidal 2 approximation 3

Global forward modelling of the Earth’s gravitational potential, a classical problem in geophysics 8 and geodesy, is relevant for a range of applications such as gravity interpretation, isostatic hypothesis testing 9 or combined gravity field modeling with high and ultra-high resolution. This study presents spectral forward 10 modelling with volumetric mass layers to degree 2190 for the first t...

Calculation of One-dimensional Forward Modelling of Helicopter-borne Electromagnetic Data and a Sensitivity Matrix Using Fast Hankel Transforms

The helicopter-borne electromagnetic (HEM) frequency-domain exploration method is an airborne electromagnetic (AEM) technique that is widely used for vast and rough areas for resistivity imaging. The vast amount of digitized data flowing from the HEM method requires an efficient and accurate inversion algorithm. Generally, the inverse modelling of HEM data in the first step requires a precise a...

Ellipsoidal head model for fetal magnetoencephalography: forward and inverse solutions.

Fetal magnetoencephalography (fMEG) is a non-invasive technique where measurements of the magnetic field outside the maternal abdomen are used to infer the source location and signals of the fetus' neural activity. There are a number of aspects related to fMEG modelling that must be addressed, such as the conductor volume, fetal position and orientation, gestation period, etc. We propose a solu...

Extraction and remeshing of ellipsoidal representations from mesh data

Dense 3D polygon meshes are now a pervasive product of various modelling and scanning processes that need to be subsequently processed and structured appropriately for various applications. In this paper we address the restructuring of dense polygon meshes using their segmentation based on a number of ellipsoidal regions. We present a simple segmentation algorithm where connected components of ...