Temporal variation in spectral detection thresholds of substrate and vegetation in AVIRIS images
Temporal variation in spectral detection thresholds of substrate and vegetation in AVIRIS images
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AVIRIS 图像中基质和植被的光谱检测阈值的时间变化
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
J. Adams
中科院分区：
文献类型：
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作者：
D. Sabol;D. Roberts;Milton O. Smith;J. Adams
利用遥感作为监测工具的优点之一是能够在大的表面区域上绘制随时间变化的地图。地表的时间变化可能是渐进的，因此难以在短期内检测到，而且由于它们通常发生在亚像素尺度上，因此也可能难以在长期内检测到。此外，细微的变化可能是真实的，也可能仅仅是图像噪声的产物。因此，有必要了解在评估时间数据时限制地表物质检测的因素。对1990年7月和10月机载可见光/红外成像光谱仪（AVIRIS）资料中植被和土壤的光谱可探测性进行了评价和比较。
The ability to map changes over large surface areas over time is one of the advantages in using remote sensing as a monitoring tool. Temporal changes in the surface may be gradual, making them difficult to detect in the short-term, and because they commonly occur at the subpixel scale, they may be difficult to detect in the long-term as well. Also, subtle changes may be real or merely an artifact of image noise. It is, therefore, necessary to understand the factors that limit the detection of surface materials in evaluating temporal data. The spectral detectability of vegetation and soil in the 1990 July and October Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) data of Jasper Ridge, CA was evaluated and compared.