| GDAL在地理国情监测项目中的应用 |
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| 引用本文： | 苏光日,范义鹏,张学之,姜淼.GDAL在地理国情监测项目中的应用[J].东北测绘,2014(1):86-88. |
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| 作者姓名： | 苏光日 范义鹏 张学之 姜淼 |
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| 作者单位： | [1]黑龙江地理信息工程院,黑龙江哈尔滨150081 [2]山东正元数字城市建设有限公司,山东济南264670 |
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| 基金项目： | 黑龙江测绘地理信息局测绘科技发展基金项目：地理国情普查生产应用与管理集成系统研发--地理国情普查内业生产应用集成子系统（201301-5）资助 |
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| 摘 要： | 在地理国情监测项目中，使用了大量的卫星遥感影像，这些卫星遥感影像单景数据都大于2GB。利用GDAL的快速高效的影像读取功能，动态分块读取图像，能够很好地处理这些大数据，采用扫描线算法提取地理国情监测项目的影像有效边界，实现影像接边和影像坐标范围检查。
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| 关 键 词： | GDAL 动态分块 影像接边 遥感影像 地理国情 |
Application of GDAL in Geographic National Condition Monitoring Project |
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| SU Guang - ri,FAN Yi - peng,ZHANG Xue - zhi,JIANG Miao.Application of GDAL in Geographic National Condition Monitoring Project[J].Northeast Surveying and Mapping,2014(1):86-88. |
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| Authors: | SU Guang - ri FAN Yi - peng ZHANG Xue - zhi JIANG Miao |
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| Institution: | 1. Heilongjiang Institute of Geomaties Engineering, Harbin 150081, China; 2. Shangdong Zhengyuan Digital City Construction Co., Ltd., Jinan 264670, China) |
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| Abstract: | In the geographic national conditions monitoring project, a large number of satellite remote sensing images are used, and the single panoramic image is usually larger than 2GB. By using the dynamic sub - block function of GDAL, we can fast and efficiently read and process those mass data images. Then, we use the scan line algorithm to obtain effective border of image in the geographic na- tional condition monitoring project, and achieve image edge matching and image coordinate range checking. |
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| Keywords: | GDAL dynamic sub -block image edge matching remote sensing geographic national conditions |
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