11. Application of low cost, high and super-high resolution satellite images to update geographic information database at ratio 1/ 10,000 and 1 / 25,000

Abstract

The adjustment of topographic maps and updating geographic information database by satellite images have mainly used VNREDSAT-1, SPOT6 / 7, Worldview2/3. However, some cases avaiable images do not meet the coverage requirements or have a relatively high cost. In fact, there are some new satellites, such as PlanetScope, RapidEye, SkySat which generate high, super-high resolution images, advantages of shooting time and lower cost. However, small image size (2.5 - 8 km) of such new satellites may lead to difficulties in image processing. The purpose of this paper is to evaluate the applicability of some low-cost high-resolution satellite images (PlanetScope, RapidEye, SkySat) in addition to the existing remote sensing data sources for updating the geographic information database ratio 1/10,000 and 1/25,000. To achieve the above goal, the paper has researched, analyzed, evaluated the geometric processing and mozaic through from theory to experiment to get conclusions about the applicability of some high and super high resolution remote sensing images in practice. The research results show that PlanetScope images meet the requirements for updating geographic infomation database at ratio 1 / 25,000 and the super-high resolution images (e.g. SkySat) meet the requirements for updating geographic infomation database at the ratio of 1 / 10,000.