منابع مشابه
Analysis of Extracting Prior BRDF from MODIS BRDF Data
Many previous studies have attempted to extract prior reflectance anisotropy knowledge from the historical MODIS Bidirectional Reflectance Distribution Function (BRDF) product based on land cover or Normalized Difference Vegetation Index (NDVI) data. In this study, the feasibility of the method is discussed based on MODIS data and archetypal BRDFs. The BRDF is simplified into six archetypal BRD...
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We present a new image-based process for measuring surface reflectance rapidly, completely, and accurately. Requiring only a digital camera, a light source, and a convex curved test sample, our method can measure the BRDF with high resolution and accuracy over a very large domain of illumination and reflection directions. We have verified our measurements both by tests of internal consistency a...
متن کاملEfficient Isotropic BRDF Measurement
In this paper we present two novel reflectance measurement procedures that requiresampling
متن کاملBRDF/BTF Measurement Device
Capturing surface appearance is important for a large number of applications. Appearance of real world surfaces is dif cult to model as it varies with the direction of illumination as well as the direction from which it is viewed. Consequently, measurements of the BRDF (bidirectional reectance distribution function) have been important. In addition, many applications require measuring how the e...
متن کاملAutomatic BRDF Factorization
A method is presented to automatically generate factored approximations for arbitrary Bi-directional Reflectance Distribution Functions (BRDFs). The method extends previous work in BRDF factorization to include a search over a space of 4D to 2D projections. By using a search over projections, approximation error is improved and the necessity for user intervention is reduced. The user can also h...
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ژورنال
عنوان ژورنال: IEEE Transactions on Visualization and Computer Graphics
سال: 2012
ISSN: 1077-2626
DOI: 10.1109/tvcg.2012.73