Generally, coordinates obtained by global positioning systems (GPS) can be applied when
they are transformed into local or national coordinates. The four-and seven-parameter …

Rigid transformation including rotation and translation can be elegantly represented by a
unit dual quaternion. Thus, a non-differential model of the Helmert transformation (3D seven …

Based on the Lagrangian extremum law with the constraint that rotation matrix is an
orthonormal matrix, the paper presents a new analytical algorithm of weighted 3D datum …

Nowadays a unit quaternion is widely employed to represent the three-dimensional (3D)
rotation matrix and then applied to the 3D similarity coordinate transformation. A unit dual …

The analytical solution of 3D datum transformation with an isotropic weight has been
elegantly presented based on Procrustes algorithm (singular value decomposition). But the …

This study presents a novel filtering methodology for Mobile Laser Scanning (MLS) data
using robust iterative reweighting. Initially, 3D point clouds are projected onto a 2D grid to …

The present paper presents a geodetic datum transformation between the old and new
national coordinate reference systems of Slovenia. The basis for transformation is a set of …

Geoid undulation model is typically used for the conversion between GNSS obtained
ellipsoidal heights and their orthometric counterparts. In this study, an adaptive approach for …

由於測量, 建設, 製圖等方面的需求不斷增加, 並隨著城市的快速發展, 目前空間資訊的趨勢已從
早期的二維資訊轉變為三維資訊. 如何確定高程基準是相當重要的一項議題. 在現代測量中 …

This thesis is a study of methods of transforming coordinates between geodetic datums, the
methods being generally known as datum transformations. Direct methods are described …