GEOGRAPHY IMAGE PROCESSING DEVICE, GEOGRAPHY IMAGE PROCESSING METHOD, GEOGRAPHY IMAGE PROCESSING PROGRAM, COMPUTER-READABLE RECORDING MEDIUM WITH THE SAME RECORDED THEREON, GEOGRAPHY IMAGE DATA, AND TOPOGRAPHIC MAP DATA

摘要

PROBLEM TO BE SOLVED: To provide a geography image processing device capable of effectively removing, without losing the original information about landform components of original image data, only noise component from geography image data, such as DEM data, formed by remote sensing technology.SOLUTION: A geography image processing device 100 converts DEM data into raster data (S200). A planar filter process (S300) and then a linear filter process (S400) are performed for the obtained DEM raster data. Subsequently, using the obtained DEM raster data from which noise is removed, geography analysis data are created (step S500).