Abstract

Development of GIS-based framework for the mapping usage of GCPs
Track: Surveying
Authors: Zainal Majeed

This paper develops a GIS-based framework for GCPs. The work includes formalization of spatial database for management of these points. GCP serves as basis for ensuring geo-locational accuracies of imageries within the desired tolerance thus enabling such output of seamless image tiles. The development looks from the outset of collecting GCPs in analogue till the stage of exploiting the GCPs in digital using ArcGIS. The three phases of the development are collection, digitization and management of the GCPs. The collection phase studied the accuracy of collection and conveying the information, distribution of the GCPs, datum and projection. The digitization phase assessed the GCPs for accuracies prior to digitization to omit human error during conveying of the information of GCPs from ground to sketch by using triangulation. The management part looked at the structure of how the GCPs are visualized, shared, utilized in the form of chip database and updated