Reflection curvesnew computation and rendering techniques
نویسنده
چکیده
Reflection curves on surfaces are important tools for free-form surface interrogation. They are essential for industrial 3D CAD/CAM systems and for rendering purposes. In this note, new approaches regarding the computation and rendering of reflection curves on surfaces are introduced. These approaches are designed to take the advantage of the graphics libraries of recent releases of commercial systems such as the OpenInventor toolkit (developed by Silicon Graphics) or Matlab (developed by The Math Works). A new relation between reflection curves and contour curves is derived; this theoretical result is used for a straightforward Matlab implementation of reflection curves. A new type of reflection curves is also generated using the OpenInventor texture and environment mapping implementations. This allows the computation, rendering, and animation of reflection curves at interactive rates, which makes it particularly useful for industrial applications.
منابع مشابه
Topology and arrangement computation of semi-algebraic planar curves
We describe a new subdivision method to efficiently compute the topology and the arrangement of implicit planar curves. We emphasize that the output topology and arrangement are guaranteed to be correct. Although we focus on the implicit case, the algorithm can also treat parametric or piecewise linear curves without much additional work and no theoretical difficulties. The method isolates sing...
متن کاملEfficient Self-Shadowing Using Image-Based Lighting on Glossy Surfaces
In this paper we present a novel natural illumination approach for real-time rasterization-based rendering with environment map-based high dynamic range lighting. Our approach allows to use all kinds of glossiness values for surfaces, ranging continuously from completely diffuse up to mirror-like glossiness. This is achieved by combining cosine-based diffuse, glossy and mirror reflection models...
متن کاملDesign of a Pipelined Architecture for Ray/Bézier Patch Intersection Computation
Ray tracing is one of the most important techniques in computer graphics for rendering high quality and photorealistic pictures. In it, at least one ray is cast into the scene for each pixel of the image. If the ray hits an object, it may produce other rays, such as reflection, shadow, and refraction rays to determine the color of the associated pixel (see [1] for more details). Ray tracing dea...
متن کاملFast Local Approximation to Global Illumination
Interactive global illumination remains an elusive goal in rendering, as energy from every portion of the scene contributes to the final image. Integrating over a complex scene, with a polygon count in the millions or more, proves difficult even for static techniques. Interacting with such complex environments while maintaining high quality rendering generally requires recomputing the paths of ...
متن کاملSolving the \nearest Point on Object" Problem Using Recursive Subdivision Solving the \nearest Point on Object" Problem Using Recursive Subdivision
Finding the nearest point on a given 2D or 3D object computation is a problem that arises in many computer graphics applications, such as interactive modeling, rendering of implicit surfaces or collision detection. Unfortunately, for objects with complex geometry such as curves or surfaces, the computation cost becomes prohibitive as a minimization process acting in multiple dimensions has to b...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Int. J. Math. Mathematical Sciences
دوره 2004 شماره
صفحات -
تاریخ انتشار 2004