APPARATUS AND A METHOD FOR RENDERING BASED ON A POINT IN A NAVIGATION SYSTEM, PARTICULARLY BASED ON DEM(DIGITAL ELEVATION MODEL) GEOGRAPHIC DATA

摘要

PURPOSE: An apparatus and a method for rendering based on a point in a navigation system are provided to generate primitive for the number of inter-grid crossing points of DEM data, thereby improving rendering speed.;CONSTITUTION: A navigation device searches ground data corresponding to location information in stored DEM(Digital Elevation Model) geomorphic data(805). The navigation device generates point data coordinate with the geomorphic data(807). The navigation device calculates distance between point and geomorphic through the point data coordinate(809). The navigation device determines size of quadrangular splat through the calculated distance(811). The navigation device performs three-dimensional ground rendering with the quadrangular splat(813).;COPYRIGHT KIPO 2010