| 基于内存映射的ENVI标准格式影像指定块数据快速读取 |
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| 引用本文： | 郭春波,王茂芝,汪大明,郭科. 基于内存映射的ENVI标准格式影像指定块数据快速读取[J]. 四川轻化工学院学报, 2012, 0(5): 58-61 |
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| 作者姓名： | 郭春波 王茂芝 汪大明 郭科 |
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| 作者单位： | [1]成都理工大学管理科学学院,成都610059 [2]数学地质四川省重点实验室,成都610059 [3]中国地质调查局,北京100037 |
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| 基金项目： | 中国地质调查局项目（1212011120226;1212011120227;1212011087084） |
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| 摘 要： | 针对遥感影像海量数据存储问题，提出了一种基于内存映射的指定块数据快速读取方法，并通过OpenGL对ENVI标准格式的遥感影像海量数据快速读取予以验证。实验结果表明，基于内存映射的方式能有效地解决遥感影像海量数据指定内容的快速读取问题。论文还对内存映射的原理以及基于OpenGL显示的ENVI标准格式遥感影像数据读取程序实现细节进行了描述。
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| 关 键 词： | 内存映射 ENVI标准格式 OpenGL 内存管理 |
Quickly Reading of the ENVI Standard Format Specified Data Block Based on Memory-mapping |
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| GUO Chun-bo,WANG Mao-zhi,WANG Da-ming,GUO Ke. Quickly Reading of the ENVI Standard Format Specified Data Block Based on Memory-mapping[J]. Journal of Sichuan Institute of Light Industry and Chemical Technology, 2012, 0(5): 58-61 |
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| Authors: | GUO Chun-bo WANG Mao-zhi WANG Da-ming GUO Ke |
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| Affiliation: | 1. College of Management Science, Chengdu University of Technology, Chengdu 610059, 2. Geomathematics Key Lab of Sichuan Provice, Chengdu 610059, China; 3. China Geological Survey, Beijing 100037, China) |
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| Abstract: | In the light of problems about the large remote sensing image data storage, a method based on memory map- ping to read the specified block data fastly is proposed. That the massive data of remote sensing images on the ENVI standard format can be quickly read by this mehod is verified through OpenGL. The experimental results show that the mehod based on memory mapping can effectively solve the problem of large data specified content fast reading problems. The memory mapping principle and the read program implementation details which based on OpenGL display ENVI standard format remote sensing image data are described. |
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| Keywords: | memory-mapping file ENVI standard format OpenGL memory management |
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