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After 30 years of rapid development, the total mileage of Chinese expressway has exceeded 100 thousand kilometers, and it has ranked first in the world. In the process of expressway construction and operation, the toll collection technology has also changed continuously with the development of information technology. The paper analyzed the development process of toll collection technology in China...
Geographic object-based image analysis (GEOBIA) is a useful method for image classification. This study aimed to find optimal parameters combination for extracting buildings using object-based image analysis. The images taken from two satellites Quickbird-2 and Gaofen (GF-1) were used to extract information of buildings in an urban area. The most important step in image segmentation is to determine...
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