PARALLEL PROCESS BASED DIGITAL SURFACE MODEL GENERATING METHOD AND A SYSTEM THEREOF FOR GENERATING DSM(Digital Surface Model) OF AN ROI(Region Of Interest)

摘要

PURPOSE: A parallel process based digital surface model generating method and a system thereof are provided to divide a target area for generating a DSM into specific unit areas and to prevent increase of processing time by generating DSM of a target area by performing parallel process of a divided unit area.;CONSTITUTION: A target area for generating a DSM is divided into a plurality of unit areas(S620). Reference images including at least one unit area are searched(S640). Height values corresponding to two-dimensional coordinates are extracted by using the searched reference images. The DSM of the target area is generated by using the unit DSM(S660).;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Start; (BB) Searching for reference images including at least one unit area; (CC) Searching for reference images including at least two unit areas; (DD) Searching for reference images including at least N unit areas; (EE) Generating unit DSM of a first unit area by using a height value by extracting the height value corresponding to two-dimensional coordinate by using reference images; (FF) Generating unit DSM of a second unit area by using a height value by extracting the height value corresponding to two-dimensional coordinate by using reference images; (GG) Generating unit DSM of an N unit area by using a height value by extracting the height value corresponding to two-dimensional coordinate by using reference images; (HH) End; (S610) Determining virtual surface of a target area; (S620) Dividing the virtual surface into N unit areas; (S630) Supplying information for unit areas for parallel process; (S650) Merging generated unit DSMs; (S660) Generating DSM of a target area by processing a bending part of the unit DSM