A point cloud describes a collection of points known in a cartesian tridimensional system and together forming a 3D object [18]. As such, a point cloud is by nature a geometric entity. Early conceptions of a point cloud already existed in traditional land surveying [19]. However, the generat...
A sun position identification algorithm is developed for use in the cloud detection. The major steps of the sun position identification algorithm is shown in Figure 6 below. Polar coordinates(ρ,θ)are used to determine the position sun in a sky image and then converted to Cartesian coordinates...
The lower figure outlines the three wake refinement regions, with the upper inset visualising the mesh around the wing section Cartesian element. This permits the generation of a boundary layer to any desired thick- ness of distribution, which is guaranteed to be valid so long as the original ...
The vector of the robot generalized coordinates is q=(xb,yb,θb)∈R3,with xb and yb being the Cartesian coordinates of B in the world frame Fw and θb being the orientation of the vehicle and consequently of the driving wheels, The kinematic constraint of the considered robot emanates fro...
In order to avoid the additional phase error introduced by coordinate transformation based on interpolation, back projection (BP) algorithm is applied in Cartesian coordinate system and cylindrical coordinate system, respectively. The point target response presents a 2-D sinc function in cylindri...
In alternative embodiments, the ground control points used for an inspection, may each have a unique pattern displayed on the ground control point. The machine learning algorithm may be trained with images for each of the unique patterns. The machine learning algorithm, then may automatically identi...
Crocetto N, Russo P (1994) Helmert's projection of a ground point onto the rotational reference ellipsoid in topocentric Cartesian coordinates. Bullettin Geodesique 69: 43–48.Crocetto, N., Russo, P.: Helmert’s projection of a ground point onto the rotational reference ellipsoid in topo...
This study first develops a bistatic ground Cartesian back-projection (BGCBP) algorithm through subimage wavenumber spectrum correction, specifically adapted to GEO-satellite-based PBSAR. Compared to conventional BP, the BGCBP achieves an order-of-magnitude complexity reduction without resolution ...
This study first develops a bistatic ground Cartesian back-projection (BGCBP) algorithm through subimage wavenumber spectrum correction, specifically adapted to GEO-satellite-based PBSAR. Compared to conventional BP, the BGCBP achieves an order-of-magnitude complexity reduction without resolution ...
A sun position identification algorithm is developed for use in the cloud detection. The major steps of the sun position identification algorithm is shown in Figure 6 below. Polar coordinates(ρ,θ)are used to determine the position sun in a sky image and then converted to Cartesian coordinates...