Reciprocity of the bidirectional reflectance distribution function (BRDF) in measurements and models of structured surfaces

نویسنده

  • William C. Snyder
چکیده

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Structured Surface BRDF Reciprocity: Theory and Counterexamples

We address the question of whether the bidirectional reflectance distribution function (BRDF) of a structured surface has the same value when the incident and reflected angles are reversed. In particular, we examine the validity of some recent counterexamples and contrary measurements. Based on a new definition for structured surfaces, we conclude that the BRDF should be reciprocal. We show tha...

متن کامل

Definition and invariance properties of structured surface BRDF

The bidirectional reflectance distribution function (BRDF) is used to characterize the directional properties of surface reflectance, but the most recent standardized definition fails to address some important aspects for the structured and varying surfaces encountered in remote sensing. This article proposes an updated definition of BRDF that is applicable for such surfaces. The updated defini...

متن کامل

Verifying and Modeling the Polarizing Reflectance of Real-World Metallic Surfaces

In computer graphics, a large number of BRDF models have been introduced over the years. Some are purely appearancebased heuristics, while others are physically plausible. To achieve plausibility a lot of work has been done on measuring the actual reflectance of a wide range of material surfaces with BRDF models being fitted against these measurements. In this article, we present a systematic a...

متن کامل

In Situ Brdf Measurements of Selected Surface Materials to Improve Analysis of Remotely Sensed Multispectral Imagery

The spectral bidirectional reeectance distribution function (BRDF) of selected artiicial surfaces (e. g. roof materials) was measured under natural illumination. Data were obtained with a spectrometer in the wavelength range 600 nm { 900 nm with a spectral resolution of 5 nm, using 61 spectral bands. The samples were placed on a goniometer, which allowed to set all the desired angles of inciden...

متن کامل

Reeectance and Texture of Real-world Surfaces Reeectance and Texture of Real World Surfaces

In this work, we investigate the visual appearance of real-world surfaces and the dependence of appearance on scale, viewing direction and illumination direction. At ne scale, surface variations cause local intensity variation or image texture. The appearance of this texture depends on both illumination and viewing direction and can be characterized by the BTF (bidirectional texture function). ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • IEEE Trans. Geoscience and Remote Sensing

دوره 36  شماره 

صفحات  -

تاریخ انتشار 1998