FIG Peer Review Journal


Positional Accuracy Improvement for Heterogeneous Geodata Integration (9783)

Thi Bich Phuong Dong (Viet Nam)
Dr. Thi Bich Phuong Dong
Head of Department of Cartography and GIS
Vietnam Institute of Geodesy and Cartography
Ha Noi
Viet Nam
Corresponding author Dr. Thi Bich Phuong Dong (email: dbphuong[at], tel.: +84912482545)

[ abstract ] [ paper ] [ handouts ]

Published on the web 2019-02-28
Received 2018-10-01 / Accepted 2019-02-01
This paper is one of selection of papers published for the FIG Working Week 2019 in Hanoi, Vietnam and has undergone the FIG Peer Review Process.

FIG Working Week 2019
ISBN 978-87-92853-90-5 ISSN 2307-4086


Integration of multi-origin data, differentiated in spatial reference system, established method, time and precisions, is an unresolved problem in all countries. Positional accuracy improvement (PAI) of objects that have been captured or displayed in geodatabases and maps to match more accurate reference data is a challenge for national mapping agencies. This paper clarifies the role of positional accuracy improvement in heterogeneous geodata integration in Vietnam and proposes an improvement workflow for cadastral data to fit with more accurate national geographic data using rubbersheeting transformation. Test results of enhancement planar accuracy of cadastral map 1: 10 000 according to national geographic data of same scale and higher accuracy demonstrate that positional accuracy improvement workflow can be used in integrating multi-source data and enabling utilization of map legacy.
Keywords: Geoinformation/GI; GIM; Cartography; Digital cadastre; Cadastre; Positional accuracy improvement; integration heterogeneous geodata; cadastral; Rubbersheeting