3 D Model Acquisition Including Reflection Properties
نویسنده
چکیده
The measurement of accurate material properties is an important step towards the inclusion of realistic objects in digital documents. Many real-world objects are composed of a number of materials with subtle changes even within a single material. We present an image-based measuring method that robustly detects the different materials of real objects and fits an average bidirectional reflectance distribution function (BRDF) to each of them. In order to model the local changes as well, we project the measured data for each surface point into a basis formed by the recovered BRDFs leading to a truly spatially varying BRDF representation. A compact, high quality model of a real object can be generated with relatively few input data.
منابع مشابه
3D Object Model Acquisition from Silhouettes
This thesis proposes an approach for acquiring a 3D object model from silhouettes. The 3D object model we propose is a set of object’s properties which are necessary for reproducing the object’s appearance. The properties in the 3D object model are categorized into three properties; photometry modeled by reflection properties, geometry modeled by object’s shape, and motion modeled by a sequenti...
متن کاملTutorial Notes EUROGRAPHICS 2007 Tutorial 6 Capturing Reflectance - From Theory to Practice September 3 , 2007 Hendrik
One important problem in photorealistic or predictive rendering nowadays is to realistically model the light interaction with objects. Measurements can capture the reflection properties of real world surface, i.e., they are one way of obtaining realistic reflection properties. For arbitrary (non-fluorescent, non-phosphorescent) materials, the reflection properties can be described by the 8D ref...
متن کاملTutorial Notes for the DAGM 2001 A Framework for the Acquisition , Processing and Interactive Display of High Quality 3 D Models Research
This tutorial highlights some recent results on the acquisition and interactive display of high quality 3D models. For further use in photorealistic rendering or object recognition, a high quality representation must capture two different things: the shape of the model represented as a geometric description of its surface and on the other hand the appearance of the material or materials it is m...
متن کاملRealistic Materials in Computer Graphics
Realistic modeling of the interaction of light with objects is one important challenge in photorealistic or predictive rendering. Since the modeling of a desired appearance using parametric reflection models can be rather tideous task one way to obtain realistic reflection properties are measurements of real world surfaces. For arbitrary (non-fluorescent, nonphosphorescent) materials, the refle...
متن کاملDraft from Graphical Models and Image Processing , vol . 58 , no . 5 , September 1996 Reflectance Analysis for 3 D Computer Graphics Model Generation Running head : Reflectance Analysis for 3 D CG Model Generation
For synthesizing realistic images of a real three dimensional object, reflectance properties of the object surface, as well as the object shape, need to be measured. This paper describes one approach to create a three dimensional object model with physically correct reflectance properties by observing a real object. The approach consists of three steps. First, a sequence of range images and col...
متن کامل