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Extracting urban land of China timely and accurately is essential for recognizing and understanding the urban pattern and urbanization process in China. Stable nighttime light data obtained by the Defense Meteorological Satellite Program/Operational Linescan System (DMSP/OLS) provides an economical and straightforward way to map the distribution of urban land. However, all the current methods of extracting...
The stable lights data in the Version 4 Nighttime Lights Time Series Dataset gained by the Defense Meteorological Satellite Program's Operational Line-scan System can't be used to map urban areas directly because the data has no on-board calibration and many unstable lights are also included in the data. So the systematic correction was performed before the urban areas extraction according to the...
Mobile 2D barcode combining the advantages of 2D barcode and mobile phones facilitates easy access to any information at any time in any place through any media. It has become a proactive engine to promote the rapid development of Mobile-Internet and industry innovation. This paper first introduces the basic concepts of 2D barcode and mobile 2D barcode and analyzes the business modes and merits of...
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