METHOD, DEVICE AND RECORDING MEDIUM RECORDING PROGRAM FOR THREE-DIMENSIONAL CONVERSION OF TWO-DIMENSIONAL ELEVATED ROAD DATA UNDER THREE-DIMENSIONAL GRAPHIC ENVIRONMENT, AND METHOD, DEVICE AND RECORDING MEDIUM RECORDING PROGRAM FOR THREE-DIMENSIONAL VISUALIZATION OF TWO-DIMENSIONAL ELEVATED ROAD DATA UNDER THREE-DIMENSIONAL GRAPHIC ENVIRONMENT

摘要

PROBLEM TO BE SOLVED: To provide a three-dimensional conversion method and device for two-dimensional elevated road data under three-dimensional graphic environment, and to provide three-dimensional visualization method and device for the two-dimensional elevated road data under the three-dimensional graphic environment using it.;SOLUTION: This three-dimensional visualization device or the like for the two-dimensional elevated road data 10 under the three-dimensional graphic environment has a superposition area separation part 100, a triangulation processing part 200, a height coordinate addition part 300, and a visualization processing part 400. Thereby, a separation line is selectively applied to separate a superposition portion of a polygon, ear cut algorithm is applied to perform triangulation processing of the polygon, and diversified visualization processing is performed by portions of the generated elevated road data. Thereby, the two-dimensional elevated road data 10 can be effectively converted into three-dimensional elevated road data 16 to express diversified appearance of an elevated road.;COPYRIGHT: (C)2006,JPO&NCIPI