Efficient surface-aware ray tracing based on implicit model representation

نویسندگان

  • Jigang Li
  • Xianhai Meng
  • Qin Yang
  • Ru-Shan Wu
چکیده

We propose a novel surface-aware ray tracing method based on implicit model representation. Each horizon is represented by a signed distance field and the spatial relationships between horizons are described by a stratigraphic binary tree. With this kind of implicit representation, complex structural model (e.g., heavily faulted, intrusions and unconformities) are easily handled, and the velocity discontinuities across interfaces can be represented accurately. Moreover, the ray-intersection with the interfaces can be accomplished very efficiently because only finite number of local computations is involved. The proposed method has many potential applications such as ray-based seismic modeling, ray-based seismic migration and tomographic migration velocity analysis, etc.

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

Arbitrary 3D Resolution Discrete Ray Tracing of Implicit Surfaces

A new approach to ray tracing implicit surfaces based on recursive space subdivision is presented in this paper. Interval arithmetic, already used to calculate intersections in ray tracing and ray casting (numerically or subdividing 1D or 2D spaces), is now used here to implement a ray tracing based on reliable rays traversals into a potentially infinite octree-like subdivided space, eliminatin...

متن کامل

Interactive Ray Tracing of Arbitrary Implicit Functions

We present a practical and efficient algorithm for interactively ray tracing arbitrary implicit surfaces. We use interval arithmetic both for reliable numerical computation and guaranteed detection of topological features. In conjunction with ray tracing, this allows for rendering literally any implicit surface simply from its definition. Interactive ray tracing facilitates flexible shading and...

متن کامل

Ray Tracing Implicit Surfaces

This is an overview of methods for ray tracing implicit surfaces, including the primary problem of intersecting a ray with an implicit surface, and the secondary problems of determining surface normals, and incorporating CSG operations and deformations.

متن کامل

Interactive Ray-tracing Based on OptiX to Visualize Signed Distance Fields

We propose a parallel ray-tracing technique to visualize signed distance fields generated from triangular meshes based on NVIDIA OptiX. Our method visualizes signed distance fields with various distance offset values at interactive rates (2–12 fps). Our method utilizes a parallel kd-tree implementation to query the nearest triangle and the sphere tracing method to visualize the implicit surface.

متن کامل

Ray tracing implicit surfaces on the GPU

In this paper we examine the methods of rendering implicit surfaces with a per-pixel approach. Ray tracing the implicit model directly has several benefits as opposed to processing tessellated meshes, but also invokes new kinds of problems. The main challenge is efficiently finding the first ray-surface intersection point where the surface is not given in an explicit form. Our implementation us...

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:

دوره   شماره 

صفحات  -

تاریخ انتشار 2012