Spatial Convergence of Bidirectional Reflectance Models
نویسندگان
چکیده
منابع مشابه
The Bidirectional Reflectance of Apollo
Introduction: Accurate models of the lunar thermal and illumination environment require a realistic treatment of scattered radiation at high incidence and emission angles. It has long been appreciated that the bidirectional reflectance of lunar soil is anisotropic [1], yet most lunar thermal models still assume that scattered radiation is isotropic. We recently measured the bidirectional reflec...
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The need for anisotropic soil reflectance in canopy reflectance modeling is assessed for different sampling and canopy conditions. Based on the results for grasslands, a soil model is inverted with ground-based radiometer data from the First International Satellite Land Surface Climatology Project (ISLSCP) Field Experiment (FIFE). A general solution applicable over different spectral bands, sol...
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T o t a l hemispherical shortwave reflectance (albedo) is a major parameter of interest for studies of land surface climatology and global change. Efforts' to estimate albedo from remote sensing data have been constrained by the available instrumentation that typically provide observations of reflected radiance from a single view direction in narrow spectral bands'. However, the capability to o...
متن کاملLinear approximation of Bidirectional Reflectance Distribution Functions
Various empirical and theoretical models of the surface reflectance have been introduced so far. Most of these models are based on functions with non-linear parameters and therefore faces some computational difficulties involved in non-linear optimization processes. In this paper, we introduce a new approach for approximating Bidirectional Reflectance Distribution Functions (BRDF) by employing ...
متن کاملProperties of Tabulated Bidirectional Reflectance Distribution Functions
One way to overcome the limitations imposed by analytical models of re ection is to use discretely sampled re ectance data directly. Through either empirical measurement or simulation, a bidirectional re ectance distribution function (BRDF) is acquired that is represented by a table of numbers. The generality of these measured BRDFs is useful for generating realistic images, but the inevitable ...
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ژورنال
عنوان ژورنال: Journal of Atmospheric and Oceanic Technology
سال: 1998
ISSN: 0739-0572,1520-0426
DOI: 10.1175/1520-0426(1998)015<1147:scobrm>2.0.co;2