Computing radiances, reflectance and albedo from DN’s
نویسنده
چکیده
In some cases, but not all, it is preferable to convert raw short wave satellite image data to physical quantities before using the data to interpret the landscape. Important physical quantities include radiance (at-ground or at-satellite), reflectance, or albedo. For example, it is the at-ground reflectance that is characteristic of a particular surface type, and independent of the illumination and atmospheric characteristics. In the sections below we discuss several approaches to the development of physical data layers.
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