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With China's continuous economic development, the requirement of transportation capacity is increasing, and a corresponding increase in highway construction is raised to an important position. As regions, which highway route straddled, often have volatile features and complex geological environment. When facing the complicated geological environment, the traditional exploration methods in the field...
The nighttime lights collected by the U.S. Air Force Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS) have a number of favorable characteristics for depicting the spatial patterns of Constructed surfaces on large scale. This paper presents a quantitative analysis on the brightness of nighttime lights and territorial development intensity (TDI) from pixel-scale using...
Based on the analysis of the existing problems in pixel-based image processing and object based image analysis (OBIA), this paper proposed a Geographic Unit Sequences (GUS) based image analysis approach, designed to apply geographic ontology knowledge to object based image analysis, so that the image analysis results become the carriers of geographic principle rather than the distribution of land...
The remote sensing image fusion technique has been developed quickly and applied, which is an important remote sensing research topic. How to choose the right fusion method is one of the challenges that the field face. PCA, Brovey, IHS and Multiplicative are used to fuse QuickBird and SPOT5 low-resolution multispectral and high-resolution panchromatic images. The fused images are analysed and evaluated...
This study compared four image fusion techniques for mangrove studies in the Beilun estuary, Vietnam. The fused image was generated from an ALOS multi-spectral image scene and a Quickbird panchromatic image scene. Four quantitative indices (i.e. mean, standard deviation, entropy, and correlation coefficient) were used to compare and evaluate the results of the fusion methods. Variation of fusion effects...
In this paper, we aim to test the feasibility of very high resolution satellite imagery for urban turf quality mapping. Our study site is the urbanized area of Shenyang City where the dominant turfgrass is Poa L., and the satellite imagery is QuickBird. After extracting grass from QuickBird by texture-combined supervised classification method, we analyze the relationship between green grass coverage...
The precision of road damage detection in disaster area from high resolution remote sensing images is general low because the current methods are mainly based on pixels and can't combine with the already existing GIS information. This paper presents an object-oriented road damage detection method. First and foremost, Multi-scale segmentation technology is adopted to get image objects, and then the...
Orthoimages have become a popular visualization product and planning instrument. To generate orthoimage product, mosaicking is a necessary process which combining multiple orthoimages into a single seamless composite orthoimage. In the procedure, seam-line searching is a crucial step and it determines the quality of the mosaic of orthoimages in a degree. In this paper, a seam-line optimized method...
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