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| 高光谱数据CASI信息提取的空间尺度效应 |
| Scale issues in information extraction from hyperspectral CASI data |
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| DOI： |
| 中文关键词: CASI 高光谱遥感 信息提取 空间尺度 |
| 英文关键词: compact airborne spectrographic imager (CASI) hyperspectral remote sensing information extraction scale issues |
| 基金项目:中国地质调查工作项目（12120113073000）；核工业北京地质研究院院长青年科技创新基金资助项目（2012RS01） |
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| 中文摘要: |
| 从光谱、空间和频域角度，研究了高光谱机载数据CASI在信息提取时所表现的空间尺度效应，基于变航高法获取的数据，对比分析了3种方法对5类典型目标提取的效果，并对信息提取精度进行了定量评价.得到了总体精度评价、5类地物最佳信息提取方法与尺度的确定和3种信息提取方法的针对性等3个结论.成果不仅对于指导数据获取时的航高航速设计具有重要意义，而且对于掌握精细化、定量化、专题化提取某类地物时尺度效应和提取方法的相互关系，都具有重要的参考价值. |
| 英文摘要: |
| The spatial scale effect in airborne hyperspectral CASI data information extraction was studied from spectral, spatial and frequency aspects. The collection means by variable flight altitude were discussed firstly. And three kinds of methods to extract five typical objects were researched and their extraction accuracy were evaluated quantitatively in the end. Overall accuracy, the optimal information extraction method of the five typical objects and their extraction scale, the pertinences of the three kinds of extraction methods were concluded. Results are not only provide a guidance for CASI data collection, but also have an important significance for subtle, quantification and thematic extraction of an object from hyperspectral remote sensing. |
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